JP5186314B2 - Endoscope apparatus and program - Google Patents

Description

  The present invention relates to an endoscope apparatus that performs measurement processing of a measurement object based on an image captured using an electronic endoscope, and a program for controlling the operation thereof.

In gas turbines mainly used in aircraft, the inside becomes extremely hot, and thus defects such as burning and discoloration (hereinafter referred to as burning) may occur on the surface of the turbine blade. The size (dimension) of this burning is one of the conditions for judging the replacement of the blade, and its inspection is extremely important. In such a situation, in a conventional measurement endoscope apparatus, in an image obtained by imaging a measurement object such as burning (hereinafter referred to as a measurement image), the user moves along the edge of the measurement object. The size of the measurement object is measured by sequentially specifying the reference points so as to surround the measurement object (see, for example, Patent Document 1).
JP 2001-275934 A

  However, in the conventional method, since the user has to specify the reference points one by one along the edge of the measurement object, depending on the shape of the measurement object, for example, 10 or more reference points may be set. It was necessary to specify, and the operation was complicated.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an endoscope apparatus and a program that can reduce the troublesomeness of operation and improve operability.

  The present invention has been made to solve the above-described problem, and an electronic endoscope that images a measurement object and generates an imaging signal, and a video signal generation unit that generates a video signal based on the imaging signal, In the endoscope apparatus including a measurement processing unit that performs measurement processing of the measurement object based on the video signal, the measurement processing unit specifies three reference points on the image based on the video signal. For each of a plurality of points (corresponding to search points described later) set on a reference point specifying part and a line (corresponding to a reference ellipse described later) determined by the three reference points specified by the reference point specifying part A component point calculation unit that processes the video signal in an image area (corresponding to a search area, which will be described later) and calculates constituent points (corresponding to burning composing points, which will be described later) constituting the measurement target area, and an instruction from the user Based on A configuration point correction unit for correcting said component points, an endoscope apparatus characterized by comprising a size calculating unit that calculates the size of the measurement object based on the control points.

  In the endoscope apparatus of the present invention, the component point correcting unit is selected based on a position indicated by a user on an image based on the video signal and a position of the component point calculated by the component point calculating unit. The position of the component point is corrected to a position designated by the user.

  Moreover, in the endoscope apparatus according to the present invention, the component point correction unit further determines whether or not the shape of a contour line formed by line segments connecting the component points including the corrected component point is a twisted shape. It is characterized by determining.

  In the endoscope apparatus of the present invention, the composition point correction unit adds the new composition point to a position designated by a user on an image based on the video signal.

  Further, in the endoscope apparatus of the present invention, the component point correction unit is further configured based on the position of the component point calculated by the component point calculation unit and the position of the newly added component point, respectively. An outline composed of a line connecting the constituent points is determined.

  In the endoscope apparatus of the present invention, the component point correcting unit further includes the contour so that the newly added component point and the component point selected based on an instruction from the user are connected by a line. It is characterized by determining a line.

  The endoscope apparatus of the present invention further includes a storage unit that stores correction result information indicating a result of correction performed by the component point correction unit, and the component point correction unit is further based on an instruction from a user. The corrected configuration point indicated by the correction result information selected in the above is corrected based on an instruction from a user.

  In the endoscope apparatus of the present invention, the component point calculation unit performs binarization processing of the video signal within an image area based on each of the plurality of points, and converts the video signal into the video signal after binarization processing. Based on this, an edge of the measurement target region is extracted, an approximate line that approximates the edge is calculated, and the constituent points on the edge are calculated based on the approximate line.

  In addition, the present invention provides an electronic endoscope that images a measurement object and generates an imaging signal, an image processing unit that generates a video signal based on the imaging signal, and the measurement object based on the video signal. In a program for controlling an endoscope apparatus including a measurement processing unit that performs measurement processing, the measurement processing unit includes a reference point specifying unit that specifies three reference points on an image based on the video signal, The video signal is processed in an image region based on each of a plurality of points set on a line determined by the three reference points specified by the reference point specifying unit, and constituent points constituting the measurement target region are calculated. A component point calculating unit, a component point correcting unit that corrects the component point based on an instruction from a user, and a size calculator that calculates the size of the measurement object based on the component point. Program It is.

  In the above description, the description in parentheses is for the purpose of associating the embodiment of the present invention described later with the components of the present invention for convenience, and the contents of the present invention are not limited by this description. Absent.

  According to the present invention, if three reference points are designated, the size of the measurement object can be measured, so that it is possible to reduce the troublesomeness of the operation and improve the operability.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
First, a first embodiment of the present invention will be described. FIG. 1 shows a configuration of a measuring endoscope apparatus according to the present embodiment. As shown in FIG. 1, a measuring endoscope apparatus 1 includes an endoscope 2, a control unit 3, a remote controller 4 (input unit), a liquid crystal monitor 5, a face mount display (FMD) 6, The FMD adapter 6a, optical adapters 7a, 7b, and 7c, an endoscope unit 8, a camera control unit 9, and a control unit 10 are configured.

  An endoscope 2 (electronic endoscope) that captures an image of a measurement object and generates an imaging signal includes an elongated insertion unit 20. The insertion portion 20 is configured by connecting, in order from the distal end side, a rigid distal end portion 21, a bending portion 22 that can be bent vertically and horizontally, and a flexible tube portion 23 having flexibility. A proximal end portion of the insertion portion 20 is connected to the endoscope unit 8. For example, the distal end portion 21 may be a variety of optical adapters such as a stereo optical adapter 7a, 7b (hereinafter referred to as a stereo optical adapter) having two observation fields or a normal observation optical adapter 7c having only one observation field. It is configured to be detachable by screwing.

  The control unit 3 includes an endoscope unit 8, a camera control unit (hereinafter referred to as CCU) 9 (video signal generation unit) that is an image processing means, and a control unit 10 that is a control device. The endoscope unit 8 includes a light source device that supplies illumination light necessary for observation, and a bending device that bends the bending portion 22 that constitutes the insertion portion 20. The CCU 9 receives an imaging signal output from the solid-state imaging device 2 a built in the distal end portion 21 of the insertion unit 20, converts this into a video signal such as an NTSC signal, and supplies the video signal to the control unit 10.

  The control unit 10 includes an audio signal processing circuit 11, a video signal processing circuit 12 (display signal generation unit), a ROM 13, a RAM 14, a PC card interface (hereinafter referred to as a PC card I / F) 15, and It comprises a USB interface (hereinafter referred to as USB I / F) 16, an RS-232C interface (hereinafter referred to as RS-232C I / F) 17, and a measurement processing unit 18.

  An audio signal collected by the microphone 34, an audio signal obtained by reproducing a recording medium such as a memory card, or an audio signal generated by the measurement processing unit 18 is supplied to the audio signal processing circuit 11. The video signal processing circuit 12 generates a video signal from the CCU 9 under the control of the measurement processing unit 18 in order to display a composite image obtained by synthesizing the endoscopic image supplied from the CCU 9 and the graphic operation menu. A process of combining with a graphic image signal for an operation menu or the like is performed. In addition, the video signal processing circuit 12 performs a predetermined process on the combined video signal and supplies it to the liquid crystal monitor 5 in order to display the video on the screen of the liquid crystal monitor 5.

  The PC card I / F 15 can freely attach and detach a memory card (recording medium) such as the PCMCIA memory card 32 and the flash memory card 33. By mounting the memory card, the control processing information, the image information, the optical data, etc. stored in the memory card are taken in according to the control of the measurement processing unit 18, or the control processing information, the image information, the optical data, etc. Can be recorded on a memory card.

  The USB I / F 16 is an interface for electrically connecting the control unit 3 and the personal computer 31. By electrically connecting the control unit 3 and the personal computer 31 via the USB I / F 16, various control instructions such as an instruction to display an endoscopic image on the personal computer 31 side and image processing at the time of measurement are performed. Can be performed. Also, various processing information and data can be input / output between the control unit 3 and the personal computer 31.

  The RS-232C I / F 17 is connected to the CCU 9 and the endoscope unit 8, and is connected to the remote controller 4 for controlling and operating the CCU 9 and the endoscope unit 8. When the user operates the remote controller 4, communication necessary for controlling the operation of the CCU 9 and the endoscope unit 8 is performed based on the operation content.

  The measurement processing unit 18 acquires a video signal from the video signal processing circuit 12 by executing a program stored in the ROM 13, and executes measurement processing based on the video signal. The RAM 14 is used as a work area for temporary storage of data by the measurement processing unit 18. FIG. 2 shows the configuration of the measurement processing unit 18. As shown in FIG. 2, the measurement processing unit 18 includes a control unit 18a, a reference point designating unit 18b, a reference ellipse calculation unit 18c, a burning composing point calculation unit 18d, a burning size calculation unit 18e, and a storage unit 18f. It is composed of

  The control unit 18a controls each unit in the measurement processing unit 18. The control unit 18 a also has a function of generating a graphic image signal for displaying a measurement result or an operation menu on the liquid crystal monitor 5 or the face mount display 6 and outputting the graphic image signal to the video signal processing circuit 12.

  The reference point designating unit 18b designates a reference point on the measurement object (details of the reference point will be described later) based on a signal input from the remote controller 4 or the PC 31 (input unit). When the user inputs a desired reference point while viewing the image of the measurement object displayed on the liquid crystal monitor 5 or the face mount display 6, the coordinates are calculated by the reference point specifying unit 18b.

  The reference ellipse calculation unit 18c calculates a reference ellipse (details of the reference ellipse will be described later) corresponding to a contour approximation line that approximates the contour of the measurement object based on the reference point specified by the reference point specification unit 18b. . Based on the reference point and the reference ellipse, the burning composing point calculation unit 18d calculates a burning composing point (details of the burning composing point will be described later) constituting the burning edge (contour) formed on the measurement object.

  The burning size calculation unit 18e measures the size of the burning based on the burning composing point. The storage unit 18f stores various types of information processed in the measurement processing unit 18. Information stored in the storage unit 18f is appropriately read out by the control unit 18a and output to each unit.

  Next, the contents of terms used in the present embodiment will be described. First, reference points, reference lines, and reference ellipses will be described with reference to FIGS. The reference point is a point actually designated by the user on the measurement screen. The user operates the remote controller 4 or the PC 31 while looking at the measurement screen and designates the reference point. As shown in FIG. 3, a cursor 300 indicating the designated position is displayed on the measurement screen, and the cursor 300 moves according to the operation of the remote controller 4 or the PC 31 by the user. When the user inputs an instruction to designate a reference point while the cursor 300 is moved to a desired position, the reference point is set at the position of the cursor 300. Subsequently, the next reference point is designated while moving the cursor 300 in the same manner. In the present embodiment, three reference points are designated in order. As shown in FIG. 3, first, the user designates two reference points 320 and 321 located at both ends of the burning 310.

  The reference line is a straight line connecting the first reference point and the second reference point designated by the user on the measurement screen. As shown in FIG. 3, a straight line 330 connecting the reference points 320 and 321 is a reference line. The reference ellipse is an ellipse that is set when the user designates the third reference point and is displayed on the measurement screen, and corresponds to a curve that approximates the edge of burning. As shown in FIG. 4, when the reference points 400 and 401 are designated, a reference ellipse 420 passing through the positions of the reference points 400 and 401 is displayed. The reference ellipse 420 has a reference line 430 as one diameter, and the other diameter and curvature change according to the position of the cursor 410 (FIGS. 4A to 4C). The user adjusts the position of the cursor 410 so that the shape of the reference ellipse 420 matches the shape of the burning 450 as much as possible, and inputs an instruction for designating the third reference point.

  Next, a search point, a search area, and a burning composing point will be described with reference to FIG. Search points are points set at equal intervals on the reference ellipse. A search area to be described later is set around the search point. As shown in FIG. 5A, search points 510 are set on the reference ellipse 500 at equal intervals. The first reference point and the second reference point designated by the user are also included in the search points. As will be described later, the number and interval of the search points change according to the size of the reference ellipse.

  The search area is a rectangular range that is located around the search point and that performs image processing for calculating a burning composing point that will be described later. As shown in FIG. 5B, a square search area 520 is set around the search point 510. As will be described later, the size of the search area changes according to the size of the reference ellipse. The shape of the search area is not limited to a square.

  The burning composing point is a point that constitutes a burning edge that becomes an area to be measured. As shown in FIG. 5C, a burning composing point 540 is set on the edge of the burning 530. As will be described later, the burning composing point is obtained by performing image processing on the measurement image in the search area.

  Next, the burning size will be described with reference to FIG. The burning size is a parameter representing the size of the detected burning. The burning size calculated in the present embodiment is two kinds of widths, the perimeter length, and the area of the burning. More specifically, one width of the burning is a spatial distance (three-dimensional distance) between two burning composing points corresponding to the first reference point and the second reference point specified by the user. The other width of the burning is a spatial distance between two burning composing points corresponding to two search points on a straight line orthogonal to the reference line. The perimeter is the sum of the spatial distances between all adjacent burning composing points. The area is a space area of a region surrounded by all burning composing points.

  As shown in FIG. 6, one burning width 600 is calculated as a spatial distance between two burning composing points corresponding to the reference points 610 and 611 (FIG. 6A). The other burning width 601 is calculated as a spatial distance between two burning composing points corresponding to search points 620 and 621 on a straight line orthogonal to the reference line (FIG. 6A). In the present embodiment, search points are calculated so as to include search points 620 and 621 on a straight line orthogonal to the reference line. The perimeter is calculated as the sum of the spatial distances 630 between all adjacent burning composing points (FIG. 6B). The area is calculated as a spatial area of a region 640 surrounded by all burning composing points (FIG. 6B).

  Next, the measurement screen in this embodiment will be described. In the present embodiment, burning measurement is performed by stereo measurement. In stereo measurement, since the measurement object is imaged with the stereo optical adapter attached to the distal end portion 21 of the endoscope 2, an image of the measurement object is displayed in a pair on the measurement screen.

  FIG. 7 shows a measurement screen before the start of measurement. As measurement information, a left image of the measurement object is displayed on the left screen 700, and a right image of the measurement object is displayed on the right screen 710. Further, in the area on the measurement screen excluding the left screen 700 and the right screen 710, as other measurement information, optical adapter name information 720, time information 721, message information 722, icons 723a, 723b, 723c, 723d, 723e, and A zoom window 724 is displayed.

  Both the optical adapter name information 720 and the time information 721 are information indicating measurement conditions. The optical adapter name information 720 is character information indicating the name of the optical adapter currently used. The time information 721 is character information indicating the current date and time. The message information 722 includes character information indicating an operation instruction to the user and character information indicating the coordinates of a reference point that is one of the measurement conditions.

  The icons 723a to 723e constitute an operation menu for the user to input an operation instruction such as switching of the measurement mode or clearing of the measurement result. When the user operates the remote controller 4 or the PC 31 to move the cursor 725 over any of the icons 723a to 723e and perform an operation such as a click, a signal corresponding to the operation is input to the measurement processing unit 18. . The control unit 18a recognizes an operation instruction from the user based on the signal and controls the measurement process. In the zoom window 724, an enlarged image of the measurement object located around the cursor 725 is displayed.

  Next, a measurement procedure in the present embodiment will be described with reference to FIGS. FIG. 8 shows a measurement procedure, and FIGS. 9 to 10 show measurement screens. FIG. 11 shows the relationship between the cursor position and the size of the reference ellipse. FIG. 12 shows the relationship between the cursor position and the shape of the reference ellipse.

  First, on the measurement screen displayed on the liquid crystal monitor 5 or the face mount display 6, when the user designates two reference points by operating the remote controller 4 or the PC 31, information on the designated reference points is obtained from the measurement processing unit 18. (Step SA). At this time, it is desirable for the user to select, as reference points, points located on both edges of the burning. In FIG. 9A, reference points 910 and 911 in the left image of the measurement screen 900 are designated, and an icon with a cross is displayed.

  When the position information of the two reference points in the left screen designated by the user is input to the measurement processing unit 18, the reference point designating unit 18b displays the image coordinates of the two reference points (on the liquid crystal monitor 5 or the face mount display 6). 2D coordinates on the displayed image) are calculated. The calculated image coordinates of the two reference points are output to the reference ellipse calculation unit 18c. Similarly to the above, the image coordinates of the cursor position are calculated and output to the reference ellipse calculation unit 18c. The reference ellipse calculation unit 18c calculates a reference ellipse based on the two reference points and the image coordinates of the cursor position, and uses the control ellipse as a reference ellipse information (image coordinates of points constituting the reference ellipse or reference ellipse formula). Output to. The control unit 18a executes reference ellipse drawing processing. As a result, the reference ellipse is displayed on the measurement screen.

  The size and shape of the reference ellipse change depending on the position of the cursor. When the user inputs an instruction to specify the third reference point in a state where the shape of the reference ellipse matches the burning shape as much as possible, information on the specified reference point is input to the measurement processing unit 18 (step SB). . In FIG. 9B, a reference ellipse 930 is displayed on the measurement screen 920, and the third reference point is designated at the position of the cursor 940. At this time, similarly to the above, the image coordinates of the third reference point are calculated by the reference point designating unit 18b.

  Details of the relationship between the cursor position and the size and shape of the reference ellipse are as follows. One diameter of the reference ellipse is the same as the reference line, and is fixed regardless of the position of the cursor. The other diameter of the reference ellipse has a length twice as long as the distance between the reference line and the cursor, and the length changes according to the position of the cursor. FIG. 11 shows how the length of the diameter of the reference ellipse changes according to the position of the cursor. As shown in FIG. 11B, when the distance 1120 between the reference line 1100 and the cursor 1110 becomes smaller than that in FIG. 11A, the length of the diameter becomes smaller. Further, as shown in FIG. 11C, when the distance 1120 between the reference line 1100 and the cursor 1110 is larger than that in FIG. 11A, the length of the diameter is increased.

  The shape of the reference ellipse changes in accordance with the distance between the straight line passing through the midpoint of the reference line and perpendicular to the reference line. Specifically, the curvature of the reference ellipse changes according to this distance, and the shape of the reference ellipse changes. FIG. 12 shows how the shape of the reference ellipse changes according to the position of the cursor. As shown in FIGS. 12B and 12C, the distance 1230 between the vertical line 1210 of the reference line 1200 passing through the midpoint of the two reference points and the cursor 1220 is much larger than that in FIG. 12A, or As it becomes very small, the shape of the reference ellipse 1240 approaches a rectangle. As described above, the size and shape of the reference ellipse can be flexibly set according to the position of the cursor.

  After the third reference point is designated, the measurement processing unit 18 performs burning calculation based on the coordinates of the designated reference point (step SC). In the burning calculation, the coordinates of the burning composing points and the burning size are calculated. In FIG. 10A, a measurement screen 1000 is a measurement screen during burning calculation. Details of the burning calculation will be described later. Depending on the coordinates of the designated reference point, the search point may not be calculated as described later. In this case, the burning calculation is not started even if the reference point is designated.

  When the burning calculation is completed, the detected burning area is displayed on the measurement screen according to an instruction from the measurement processing unit 18 (step SD). As shown in FIG. 10B, the burning area is displayed on the left screen of the measurement screen 1010. More specifically, the calculated burning composing points are displayed as small ● marks, X marks, or ○ marks, and are connected by a line. Two burning composing points 1020 and 1021 displayed by crosses are burning composing points corresponding to the first reference point and the second reference point designated by the user. Also, the two burning composing points 1022 and 1023 displayed with circles are burning composing points corresponding to two points on a straight line perpendicular to the reference line.

  Further, the calculated burning size is displayed on the measurement screen according to an instruction from the measurement processing unit 18 (step SE). As shown in FIG. 10B, the burning size is displayed in the result window 1030 on the right screen of the measurement screen 1010. The burning image is displayed in the upper part of the result window 1030, and the burning size is displayed in characters in the lower part. W1, W2, L, and A represent one width of the burning, the other width, the peripheral length, and the area, respectively.

  Next, with reference to FIG. 13, the burning calculation procedure in step SC of FIG. 8 will be described. When the image coordinates of the three reference points calculated by the reference point designating unit 18b are input to the reference ellipse calculation unit 18c (step SC1), the reference ellipse calculation unit 18c is based on the image coordinates of the three reference points. A search point is calculated (step SC2). Details of the search point calculation will be described later.

  Subsequently, the reference ellipse calculator 18c calculates a search area based on the search point information (step SC3). Details of the search area calculation will be described later. Subsequently, the burning composing point calculation unit 18d calculates the image coordinates of the burning composing point based on the search point and search area information (step SC4). Details of the calculation of the burning composing point will be described later.

  Subsequently, the burning composing point calculation unit 18d calculates image coordinates of matching points in the right screen corresponding to the calculated burning composing points in the left screen (step SC5). More specifically, the burning composing point calculation unit 18d performs a pattern matching process based on the image coordinates of the burning composing points, and calculates matching points that are corresponding points of the left and right two images. The pattern matching processing method is the same as that described in Japanese Patent Application Laid-Open No. 2004-49638.

  Subsequently, the burning composing point calculation unit 18d calculates the spatial coordinates (three-dimensional coordinates in the real space) of each burning composing point based on the calculated burning composing points and the image coordinates of the matching points (step SC6). ). The method for calculating the spatial coordinates is the same as that described in Japanese Patent Application Laid-Open No. 2004-49638.

  Finally, the burning size calculation unit 18e calculates a burning size based on the calculated spatial coordinates of the burning composing points (step SC7). Details of the burning size calculation will be described later.

  Next, the procedure of search point calculation processing (step SC2) will be described with reference to FIG. When the image coordinates of the three reference points are input from the control unit 18a (step SC21), the reference ellipse calculation unit 18c calculates a reference ellipse based on the input image coordinates of the reference point (step SC22). The reference ellipse calculated at this time is the same as the reference ellipse displayed when the third reference point is designated in step SC of FIG.

  Subsequently, the reference ellipse calculation unit 18c calculates the perimeter of the reference ellipse. More specifically, the reference ellipse calculation unit 18c calculates the perimeter of the reference ellipse by calculating the total value of the two-dimensional distances of adjacent pixels using the image coordinates of each pixel constituting the reference ellipse. (Step SC23). Subsequently, the reference ellipse calculation unit 18c calculates the number of search points, the interval, and the image coordinates (step SC24). Finally, the reference ellipse calculation unit 18c outputs search point information (number of search points, interval, and image coordinates) to the control unit 18a (step SC25). However, when the search points cannot be calculated, the number of search points is zero.

The search points are calculated based on the following conditions (A) to (H).
(A) The first reference point and the second reference point designated by the user are also counted as search points.
(B) The search points are arranged at equal intervals on the reference ellipse.
(C) The number and interval of search points are proportional to the perimeter of the reference ellipse.
(D) There is an upper limit on the number of search points.
(E) The search point interval has a lower limit.
(F) When the perimeter of the reference ellipse is very small, the search point is not calculated.
(G) When the distance between the first reference point designated by the user and the second reference point is very small, the search point is not calculated.
(H) When the distance between the third reference point designated by the user and the reference line is very small, the search point is not calculated.

The reasons for setting the above conditions (C) to (H) are as follows (C ′) to (H ′).
(C ′) To prevent search areas from overlapping each other.
(D ′) If there are too many search points, it takes time to calculate the burning composing points.
(E ′) If the search point interval is too small, the size of the search area becomes too small, which is not suitable for calculating the burning composing point.
Same as (F ′) to (H ′) (C ′).

  The number and interval of search points calculated based on the above conditions have the following properties. FIG. 15A shows a state where the search points 1500 are arranged on the reference ellipse 1510 at equal intervals. As shown in FIG. 15B, when the perimeter becomes larger than that in FIG. 15A, the interval 1520 of the search points 1500 is also increased in proportion thereto. Further, as shown in FIG. 15C, when the perimeter becomes smaller than that in FIG. 15A, the interval 1520 of the search points 1500 is also reduced in proportion thereto.

  As shown in FIG. 15 (d), when the perimeter becomes smaller and falls below the predetermined first perimeter, the number of search points 1500 decreases. As shown in FIG. 15E, when the perimeter is further reduced and falls below a predetermined second perimeter (first perimeter> second perimeter), the search point is not calculated. Further, as shown in FIG. 15F, if the distance between the reference points 1530 and 1531 is very small, the search point is not calculated. Further, as shown in FIG. 15G, if the distance between the third reference point (position of the cursor 1540) designated by the user and the reference line 1550 is very small, the search point is not calculated. In the present embodiment, the search points are equally spaced, but may not be equally spaced.

  Next, the procedure of the search area calculation process (step SC3) will be described with reference to FIG. When search point information is input from control unit 18a (step SC31), reference ellipse calculation unit 18c calculates the number of search areas and image coordinates based on the input search point information (step SC32). . Finally, the reference ellipse calculator 18c outputs search area information (search area size / image coordinates) to the controller 18a (step SC33).

The search area is calculated based on the following conditions (a) to (e).
(A) The search area is located around the search point.
(B) The search area has a square shape.
(C) The size of the search area is such that the search areas do not overlap each other and is proportional to the search point interval.
(D) There is an upper limit on the size of the search area.
(E) There is a lower limit to the size of the search area.

The reasons for setting the above conditions (c) to (e) are as follows (c ′) to (e ′).
(C ′) If the search areas overlap each other, burning composing points are calculated in the same region, and the detected burning edge may be twisted.
(D ′) If the size of the search area is too large, it takes time for image processing. Also, it is not suitable for calculating the burning composing point.
(E ′) If the size of the search area is too small, it is not suitable for calculating the burning composing point.

  The size of the search area calculated based on the above conditions has the following properties. FIG. 17A shows a state where search areas 1700 are arranged around search points 1710. As shown in FIG. 17B, when the interval between the search points 1710 becomes larger than that in FIG. 17A, the size of the search area 1700 increases in proportion thereto. The size of the search area 1700 at this time is a size that does not overlap each other. As shown in FIG. 17C, when the interval between the search points 1710 becomes larger than that in FIG. 17B, the size of the search area 1700 reaches the upper limit.

  Further, as shown in FIG. 17D, when the interval between the search points 1710 becomes smaller than that in FIG. 17A, the size of the search area 1700 becomes smaller in proportion thereto. The size of the search area 1700 at this time is a size that does not overlap each other. When the interval between the search points 1710 is further reduced, the size of the search area 1700 reaches the lower limit. When the interval between the search points 1710 is less than this, the search points themselves disappear as shown in FIG. In the present embodiment, the shape of the search area is a square, but it need not be a square.

  Next, the procedure of the burning composing point calculation process (step SC4) will be described with reference to FIG. FIG. 19 schematically shows this procedure, and FIG. 19 is also referred to as appropriate. When the image coordinates of the search point and the size of the search area are input from the control unit 18a (step SC41), the burning composing point calculation unit 18d searches based on the input image coordinates of the search point and the size of the search area. An area image in the area is extracted (step SC42). As a result, an area image 1910 in the search area 1901 including the search point 1900 is extracted.

  Subsequently, the burning composing point calculation unit 18d grayscales the extracted area image (step SC43), and performs edge extraction on the grayscaled image (step SC44). As a result, an edge 1921 is extracted from an image 1920 obtained by converting the area image 1910 into a gray scale. Subsequently, the burning composing point calculation unit 18d calculates an approximated straight line of the extracted edge (step SC45), and calculates two intersections of the calculated edge approximated line and the boundary line of the search area (step SC46). As a result, an edge approximate line 1930 is calculated, and intersections 1940 and 1941 between the edge approximate line 1930 and the boundary line of the search area are calculated.

  Subsequently, the burning composing point calculation unit 18d calculates the midpoint of the two calculated intersections (step SC47), and calculates the nearest point between the calculated midpoint and the edge (step SC48). As a result, the midpoint 1950 of the intersections 1940 and 1941 is calculated, and the nearest neighbor point 1960 on the edge closest to the midpoint 1950 is further calculated. Finally, the burning composing point calculation unit 18d uses the calculated nearest neighbor point as the burning composing point and outputs the image coordinates to the control unit 18a (step SC49).

In the gray scale conversion in step SC43, the luminance value Y of each pixel in the image represented by each RGB component is calculated using, for example, the following equation (1).
Y = 0.299 × R + 0.587 × G + 0.114 × B (1)
Since the burning that is the measurement object may have a characteristic color, the luminance value of the characteristic color, for example, R (red) may be used as the luminance value Y of the pixel as it is. Based on the video signal composed of the calculated luminance value Y, edge extraction is performed in step SC44.

  Since the edge approximate straight line is calculated after the edge extraction in step SC44, it is preferable to use a process that generates as little noise as possible in the extracted image for the edge extraction. For example, a primary differential filter such as a Sobel / Prewitt / Gradient filter or a secondary differential filter such as a Laplacian filter may be used. Alternatively, edge extraction may be performed using a process that combines expansion / contraction / difference processing and a noise reduction filter. At this time, it is necessary to binarize the grayscale image. However, a fixed value may be used as the binarization threshold, and the luminance of the grayscale image may be increased by a P-tile method, a mode method, a discriminant analysis method, or the like. You may use the method of changing a threshold based on this.

  In the calculation of the edge approximate straight line in step SC45, the approximate straight line is calculated using, for example, the least square method based on the edge information extracted in step SC44. In the above description, linear approximation is performed on the shape of the edge, but curve approximation may be performed using a quadratic or higher function. When the shape of the edge is closer to the curve than the straight line, the burning composing point can be calculated with higher accuracy by performing the curve approximation.

  In the output of the burning composing point in step SC49, if the burning composing point is not successfully calculated in the processing of steps SC42 to SC48 so far (for example, the edge extraction or the calculation of the approximate straight line is not successful), the search point. The image coordinates may be output as the burning composing point as it is.

  Next, the procedure of the burning size calculation process (step SC7) will be described with reference to FIG. When the spatial coordinates of the burning composing point are input from the control unit 18a (step SC71), the burning size calculation unit 18e calculates a first width of burning (step SC72). The first width is a spatial distance between two burning composing points corresponding to the first reference point and the second reference point specified by the user. Subsequently, the burning size calculating unit 18e calculates a second width of the burning (Step SC73). The second width is a spatial distance between two burning composing points corresponding to two search points on a straight line orthogonal to the reference line.

  Subsequently, the burning size calculation unit 18e calculates the perimeter of the burning (Step SC74). The perimeter is the sum of the spatial distances between all adjacent burning composing points. Subsequently, the burning size calculation unit 18e calculates a burning area (step SC75). The area is a space area of a region surrounded by all burning composing points. Subsequently, the burning size calculation unit 18e outputs the calculated burning size to the control unit 18a (step SC76).

  As described above, according to the present embodiment, the burning size can be measured by specifying three reference points, so that it is compared with the case where a large number (for example, 10 or more) reference points are specified as in the prior art. Thus, the troublesome operation can be reduced and the operability can be improved. Further, the burning size can be known in detail by calculating at least two types of parameters as the parameters indicating the burning size.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. FIG. 21 shows a configuration of the measurement processing unit 18 according to the present embodiment. The same components as those shown in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, a burning composing point correcting unit 18g for correcting the burning composing point calculated by the burning composing point calculating unit 18d is provided.

  In the first embodiment, as shown in FIG. 22A, when the shape of the burning 2200 as a measurement object is a shape that is far from a circle, an ellipse, or a rectangle, the shape shown in FIG. As shown, the reference ellipse 2210 cannot be successfully matched to the burning contour 2220. When burning calculation is performed in this state, as shown in FIG. 22C, it is difficult to match the burning contour 2220 and the burning composing point 2230, and the calculation accuracy of the burning size is lowered. In contrast, in the present embodiment, it is possible to correct (modify) the burning composing point.

  Hereinafter, the procedure for modifying the burning composing point will be described with reference to FIGS. 23 to 25 and FIG. 28. FIG. 23 shows a modification procedure, and FIGS. 24 and 25 show measurement screens during modification. FIG. 28 shows a label table created during modification. The label table will be described later. The modification of the burning composing point starts when the measurement is finished and, as shown in FIG. 24A, the burning area including the burning composing point 2400 and the result window 2410 including the burning size are displayed on the measurement screen. Is done.

  When the user moves the cursor 2420 onto the “Modify” icon 2430 and performs an operation such as clicking (step SF), as shown in FIG. The operation mode of the mirror device 1 shifts to the modify mode, and the result window is not displayed as shown in FIG. 24B (step SG).

  Subsequently, the burning composing point correction unit 18g displays a label table (a relation of which burning composing point is adjacent to which burning composing point) between the burning composing points (FIG. 28A). ) Is newly created and stored in the storage unit 18f (step SH). The label table includes a label number indicating the extraction order of the burning composing points, image coordinates of the burning composing points, and adjacent label numbers 1 and 2 indicating the label numbers of the burning composing points adjacent to the respective burning composing points. Have been described.

  Subsequently, as shown in FIG. 24C, when the user moves the cursor 2420 to the left screen and performs an operation such as clicking according to the position where the burning composing point is to be corrected (step SI), One of the points is selected, and the image coordinates of the selected burning composing point 2440 are corrected to the image coordinates of the cursor 2420 (step SJ). Subsequently, a label table updated based on the image coordinates of the corrected burning composing point is added to the storage unit 18f (step SK).

  Subsequently, a burning area including the corrected burning composing point is displayed on the measurement screen (step SL). Subsequently, based on the image coordinates of the corrected burning composing point, burning recalculation for recalculating the burning size is performed (step SM). Details of the burning recalculation will be described later. As shown in FIG. 25A, during execution of the burning recalculation, a window 2500 indicating that the calculation is being performed is displayed. When the burning recalculation is completed, the result window 2510 is displayed again as shown in FIG. 25B (step SN). The result window 2510 displays the recalculated burning size.

  After the result of the burning recalculation is displayed, when the user continues the modification (Yes in step SO), the process returns to step SI, and when the modification is finished (No in step SO). The process proceeds to step SP. When the user moves the cursor over the “Modify” icon and performs an operation such as clicking again (step SP), the burning composing point correction unit 18g deletes (deletes) the label table in the storage unit 18f (step SQ). . Subsequently, the measurement endoscope apparatus 1 ends the modify mode and returns to normal measurement.

  Next, with reference to FIG. 26, FIG. 28, and FIG. 29, the details of the procedure for correcting the image coordinates of the burning composing points (corresponding to the above steps SI, SJ, SK, SL) will be described. The burning composing points shown in FIG. 26 are given the label numbers (1 to 16) described in the label table. For convenience of explanation, the label number is described in FIG. 26, but the label number is not displayed on the actual measurement screen. As shown in FIG. 26A, when the burning composing point 2600 calculated by the burning composing point calculation unit 18d does not coincide well with the burning contour 2610, as shown in FIG. The cursor 2620 is moved to the position where the burning composing point is to be corrected. At this time, the position of the cursor 2620 indicated by the user is the position after the correction of the burning composing point.

  When the user performs an operation such as clicking after moving the cursor 2620 to a desired position, position information of the cursor 2620 is input to the measurement processing unit 18. The control unit 18a calculates the image coordinates of the correction position designated by the user and outputs the image coordinates to the burning composing point correction unit 18g. The burning composing point correcting unit 18g calculates a two-dimensional distance between the correcting position and each burning composing point based on the image coordinates of the correcting position and the image coordinates of each burning composing point, and the burning that minimizes the two-dimensional distance. Select a composing point (the burning composing point closest to the correction position). In FIG. 26B, the burning composing point 2600a is selected.

  FIG. 28B shows the label table updated at this time. It can be seen that the image coordinates of the burning composing point with the label number 4 are updated from (X4, Y4) to (X4 ', Y4'). The burning composing point correction unit 18g stores this label table in the storage unit 18f. Subsequently, the burning composing point correction unit 18g executes the correction processing of the corrected burning composing point based on the updated label table. As a result, the burning composing point 2600a is moved to the position of the cursor 2620 as shown in FIG.

  The user corrects the burning composing point so that the burning contour and the burning composing point are in good agreement by repeating the above-described correction position instruction. For example, after correcting the burning composing point 2600a as shown in FIG. 26 (c), the user corrects the burning composing point 2600b as shown in FIG. 26 (d) by the same procedure as described above. Further, the user corrects the burning composing point 2600c as shown in FIG. 26E by the same procedure as described above.

  At this time, the burning composing point correction unit 18g updates the label table as shown in FIGS. 29 (a) and 29 (b). FIG. 29A shows a label table after the burning composing point 2600b is corrected. The image coordinates of the burning composing point with the label number 5 are updated from (X5, Y5) to (X5 ′, Y5 ′). FIG. 29B shows a label table after the burning composing point 2600c is corrected. The image coordinates of the burning composing point with label number 16 are updated from (X16, Y16) to (X16 ', Y16').

  In the above procedure, when the user specifies the corrected position of the burning composing point, the burning composing point closest to that position is automatically selected and moved to the specified position, but the user selects the burning composing point to be corrected. When the designation is made and the position after correction is designated, the designated burning composing point may be moved to the designated position.

  Next, details of the burning recalculation (step SM) will be described with reference to FIG. When the corrected burning composing point calculated by the burning composing point correcting unit 18g is input (step SM1), the burning composing point calculating unit 18d performs matching in the right screen corresponding to each burning composing point in the left screen. The image coordinates of the point are calculated (step SM2). Subsequently, the burning composing point calculation unit 18d calculates the spatial coordinates (three-dimensional coordinates in the real space) of each burning composing point based on the image coordinates of the burning composing point and the matching point (step SM3). Finally, the burning size calculation unit 18e calculates a burning size based on the calculated spatial coordinates of the burning composing points (step SM4).

  Next, a modification of this embodiment will be described. In this modification, as shown in FIG. 31A, preview icons (“←” icon 3110 and “→” icon 3111) are provided below the “Modify” icon 3100 on the measurement screen. By operating this preview icon, the user can restore the state of the burning composing point that has been corrected after shifting to the modify mode, or can advance the state.

  Further, the procedure for modifying the burning composing points in this modification is as shown in FIG. Steps SR to SV are added between step SN (redisplaying the burning size) and step SO (continue modification?) In the modification procedure shown in FIG. Details of these processes will be described below. In step SK, an updated label table (correction result information) is created based on the correction result in step SJ, and stored in the storage unit 18f in a state distinguishable from the label table before the update. That is, every time the burning composing point is corrected, an updated label table is created and added to the storage unit 18f.

  At the time of modification, the label table is read from the storage unit 18f according to the result of the user operating the preview icon, and the burning area on the measurement screen is updated. The label table is distinguished by, for example, a sequence number. Assuming that the sequence number is incremented by 1 each time a label table is added, when the “←” icon 3110 is operated, a label having a sequence number smaller by 1 than the sequence number of the label table to be processed The table becomes the processing target. In addition, when the “→” icon 3111 is operated, a label table having a sequence number that is one greater than the sequence number of the label table that is the processing target is the processing target.

  FIG. 31A shows a measurement screen after correcting the burning composing point. As shown in FIG. 31B, when the user moves the cursor 3120 over the “←” icon 3110 and performs an operation such as clicking (in the case of Yes in step SR), the process proceeds to step ST. The label table created when the previous burning composing point is corrected is read from the storage unit 18f. Subsequently, the result window 3130 is temporarily hidden (step SV), and the process returns to step SL.

  Subsequently, based on the label table read from the storage unit 18f, a burning region including the burning composing point that has been corrected one time before is displayed on the measurement screen (step SL). FIG. 31C shows the measurement screen at this time. Further, the measurement screen is in the state shown in FIG. 32A, and burning recalculation is performed (step SM). When the burning recalculation is completed, the result window 3200 is displayed again as shown in FIG. 32B (step SN).

  As shown in FIG. 32C, when the user once again moves the cursor 3210 over the “←” icon 3220 and performs an operation such as a click (in the case of Yes in step SR), the same processing as described above is performed. As a result, the burning area and the result window 3230 when the previous burning composing point is corrected are displayed again.

  Also, from the state of FIG. 32C, as shown in FIG. 33A, the user moves the cursor 3300 over the “→” icon 3310 and performs an operation such as clicking (Yes in step SS). ), The process proceeds to step SU, and the label table created when the next burning composing point is corrected is read from the storage unit 18f. Subsequently, the result window is temporarily hidden (step SV), and the process returns to step SL.

  Subsequently, based on the label table read from the storage unit 18f, the burning area including the burning composing point when the one is corrected one after another is displayed on the measurement screen (step SL), and the burning recalculation is performed. (Step SM). When the burning recalculation is completed, the result window 3320 is displayed again as shown in FIG. 33B (step SN).

  When the user once again moves the cursor 3300 over the “→” icon 3310 and performs an operation such as clicking (in the case of Yes in step SR), the processing proceeds in the same manner as described above, as shown in FIG. In addition, the burning area and the result window 3330 when the correction of the previous burning composing point is performed are displayed again.

  Although not particularly illustrated, when the user moves the cursor over the preview icon and performs an operation such as clicking (steps SR and SS), a label table relating to the previous or subsequent correction exists in the storage unit 18f. Otherwise, the user cannot specify the preview icon.

  As described above, according to the present embodiment, since the burning composing point can be corrected after the burning composing point is calculated, the calculation accuracy of the burning size can be increased. Also, just by specifying the position of the corrected burning composing point on the measurement screen, the burning composing point nearest to that position is automatically selected, and the position is automatically corrected to the user's designated position. Therefore, the troublesome operation can be reduced and the operability can be improved.

  In addition, after correcting the burning composing point, it is possible to restore the state of the corrected burning composing point or to proceed further, so the correction process of the burning composing point can be confirmed, and the burning size Calculation accuracy can be increased. Furthermore, since the correction can be easily performed again, it is possible to reduce the troublesomeness of the operation and improve the operability.

(Third embodiment)
Next, a third embodiment of the present invention will be described. In the second embodiment, the position of the burning composing point that has already been calculated is corrected. However, in this embodiment, it is possible to newly add a burning composing point.

  In the method for correcting the burning composing points in the second embodiment, depending on the shape of the burning, there may be a case where the contour line constituted by the line segment connecting the burning composing points and the contour of the burning can be roughly matched. is there. For example, when the burning composing point is calculated for the burning 3400 having the shape shown in FIG. 34A as in the first embodiment, the burning composing point 3410 is calculated as shown in FIG. Is done.

  In such a case, as in the second embodiment, the user corrects the burning composing point 3410a as shown in FIG. 34 (c), and further burns composing point 3410b as shown in FIG. 34 (d). It is possible to make corrections. However, even if the burning composing points 3410a and 3410b are corrected, in the regions 3420 and 3421 shown in FIG. 34 (d), the contour line 3430 connecting the burning composing points and the contour of the burning 3400 do not match very much. Therefore, in this embodiment, it is possible to correct (modify) a burning composing point more accurately by adding a new burning composing point, instead of correcting the calculated position of the burning composing point. It has become.

  The configuration of the measurement processing unit 18 according to this embodiment is the same as that of the second embodiment. The procedure for correcting the burning composing point in this embodiment is substantially the same as the procedure shown in FIG. 23, but only the contents of the correction of the burning composing point in step SJ and the content of updating / adding the label table in step SK. Is different. Hereinafter, with reference to FIGS. 35 to 39, details of the procedure for correcting the burning composing point (steps SI, SJ, SK, SL) in this embodiment will be described.

  The burning composing points shown in FIG. 35 and the like are given the label numbers (1 to 12) described in the label table. For convenience of explanation, the label number is described in FIG. 35 and the like, but the label number is not displayed on the actual measurement screen. FIG. 38A shows a label table created in step SH of FIG. 23 before correcting the burning composing point.

  As shown in FIG. 35 (a), when the contour line connecting the burning composing points 3500 calculated by the burning composing point calculation unit 18d and the contour of the burning 3510 do not coincide very much, as shown in FIG. 35 (b). In addition, the user moves the cursor 3520 and performs an operation such as clicking according to the position where the burning composing point is to be corrected (the position of the correction point M1). At this time, the burning composing point correction unit 18g calculates a line segment La connecting adjacent burning composing points as shown in FIG. This line segment La is calculated based on the image coordinates of two burning composing points adjacent to each other described in the label table shown in FIG.

  The burning composing point correction unit 18g searches the calculated line segment La for a line segment nearest to the correction point M1. At this time, as shown in FIG. 35D, the burning composing point correction unit 18g calculates the midpoint 3530 (the midpoint of each line segment) of the two burning composing points constituting each line segment. The midpoint of each line segment is calculated as an intermediate coordinate between two burning composing points adjacent to each other described in the label table. The line segment having the nearest middle point with respect to the correction point M1 is the nearest line segment. As shown in FIG. 35 (e), the nearest line segment to the correction point M1 is a line segment L1 connecting the burning composing points with label numbers 3 and 4.

  After obtaining the nearest line segment L1 with respect to the correction point M1, the burning composing point correction unit 18g newly adds the correction point M1 to the burning composing point, and as shown in FIG. The contour line is updated based on the position of the constituent point. At this time, the burning composing point correction unit 18g updates the logical positional relationship between the burning composing points. For this reason, before the correction point M1 is added, the burning composing points of the label numbers 3 and 4 located at both ends of the line segment L1 are adjacent to each other. However, after the correction point M1 is added, the burning of the label number 3 is performed. The composing point and the correcting point M1 are adjacent to each other, and the correcting point M1 and the burning composing point having the label number 4 are adjacent to each other.

  At this time, the label table is as shown in FIG. Compared with the label table in the initial state (FIG. 38A), the correction point M1 is added as a new burning composing point between the burning composing points with label numbers 3 and 4. The image coordinates of the burning composing point with the label number M1 are (Xm1, Ym1), and the adjacent label numbers 1 and 2 are 3 and 4, respectively. Furthermore, the adjacent label number 2 of the burning composing point with label number 3 and the adjacent label number 1 of the burning composing point with label number 4 are changed to M1.

  Even after the correction point M1 is newly added to the burning composing point, the burning composing point can be corrected by repeating the above procedure. As shown in FIG. 36 (b), when the user moves the cursor 3600 and performs an operation such as clicking according to the position (the position of the correction point M2) where the burning composing point is to be corrected, the burning composing point correcting unit 18g As shown in FIG. 36C, a line segment Lb connecting adjacent burning composing points is calculated. This line segment Lb is calculated based on the image coordinates of two burning composing points adjacent to each other described in the label table shown in FIG.

  Subsequently, the burning composing point correction unit 18g searches the calculated line segment Lb for the nearest line segment with respect to the correction point M2. At this time, the burning composing point correction unit 18g calculates the midpoint (the midpoint of each line segment) of the two burning composing points constituting each line segment connecting adjacent burning composing points by the same method as described above. . The line segment having the nearest middle point with respect to the correction point M2 is the nearest line segment. As shown in FIG. 36 (d), the line segment nearest to the correction point M2 is a line segment L2 connecting the burning composing points with the label numbers 9 and 10.

  After obtaining the nearest line segment L2 with respect to the correction point M2, the burning composing point correction unit 18g newly adds the correction point M2 to the burning composing point, and as shown in FIG. The contour line is updated based on the position of the constituent point. At this time, the burning composing point correction unit 18g updates the logical positional relationship between the burning composing points. For this reason, before adding the correction point M2, the burning composing points of the label numbers 9 and 10 located at both ends of the line segment L2 are adjacent to each other, but after adding the correction point M2, the burning of the label number 9 is performed. The composing point and the correcting point M2 are adjacent to each other, and the correcting point M2 and the burning composing point having the label number 10 are adjacent to each other.

  At this time, the label table is as shown in FIG. Compared with the label table in the previous state (FIG. 38B), the correction point M2 is added as a new burning composing point between the burning composing points with label numbers 9 and 10. The image coordinates of the burning composing point with the label number M2 are (Xm2, Ym2), and the adjacent label numbers 1 and 2 are 9 and 10, respectively. Furthermore, the adjacent label number 2 of the burning composing point with label number 9 and the adjacent label number 1 of the burning composing point with label number 10 are changed to M2.

  Further, as shown in FIG. 37 (a), when the user moves the cursor 3700 and performs an operation such as clicking according to the position (the position of the correction point M3) where the burning composing point is to be corrected, 18g calculates the line segment Lc which connected the adjacent burning composing points as shown in FIG.37 (b). The line segment Lc is calculated based on the image coordinates of two burning composing points adjacent to each other described in the label table shown in FIG.

  Subsequently, the burning composing point correcting unit 18g searches the calculated line segment Lc for a line segment nearest to the correction point M3. At this time, the burning composing point correction unit 18g calculates the midpoint (the midpoint of each line segment) of the two burning composing points constituting each line segment connecting adjacent burning composing points by the same method as described above. . The line segment having the nearest middle point with respect to the correction point M3 becomes the nearest line segment. As shown in FIG. 37 (c), the nearest line segment to the correction point M3 is a line segment L3 connecting the burning composing points with label numbers 9 and M2.

  After obtaining the nearest line segment L3 with respect to the correction point M3, the burning composing point correction unit 18g newly adds the correction point M3 to the burning composing point, and as shown in FIG. The contour line is updated based on the position of the constituent point. At this time, the burning composing point correction unit 18g updates the logical positional relationship between the burning composing points. Therefore, before adding the correction point M3, the burning composing points of the label numbers 9 and M2 located at both ends of the line segment L3 are adjacent to each other. However, after the correction point M3 is added, the burning of the label number 9 is performed. The composing point and the correcting point M3 are adjacent to each other, and the correcting point M3 and the burning composing point having the label number M2 are adjacent to each other.

  At this time, the label table is as shown in FIG. Compared with the label table in the previous state (FIG. 39A), the correction point M3 is added as a new burning composing point between the burning composing points with label numbers 9 and M2. The image coordinates of the burning composing point with the label number M3 are (Xm3, Ym3), and the adjacent label numbers 1 and 2 are 9 and M2, respectively. Furthermore, the adjacent label number 2 of the burning composing point with label number 9 and the adjacent label number 1 of the burning composing point with label number M2 are changed to M3.

  As a result, the contour line obtained by the correction method of the burning composing point in this embodiment is more than the shape of the contour line obtained by the correction method of the burning composing point in the second embodiment (FIG. 34 (d)). The shape (FIG. 37 (e)) matches the burning contour more accurately.

  In the above, as shown in FIGS. 35 to 37, all processes for correcting the burning composing points are displayed on the measurement screen. Also, the label number attached to the burning composing point is not displayed. However, the present invention is not limited to this, and part of the process for correcting the burning composing point may be hidden or the label number may be displayed. Although not particularly shown, a preview icon is provided on the measurement screen as in the modification of the second embodiment, so that the state of the corrected burning composing point can be restored or advanced. You may do it.

  As described above, according to the present embodiment, by newly adding a burning composing point, the burning composing point can be corrected more accurately, and the calculation accuracy of the burning size can be increased.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described. In the method for correcting a burning composing point in the third embodiment, when adding a burning composing point, the user cannot select a burning composing point to be adjacent to the correcting point. On the other hand, in the present embodiment, when adding a burning composing point, the user can select a burning composing point to be adjacent.

  In the method for correcting the burning composing points in the third embodiment, depending on the shape of the burning, the contour line formed by the line segment connecting the burning composing points and the contour of the burning can only be roughly matched. is there. For example, when the burning composing point is calculated for the burning 4000 having the shape shown in FIG. 40A as in the first embodiment, the burning composing point 4010 is calculated as shown in FIG. Is done.

  In the third embodiment, as shown in FIG. 40 (c), when the user moves the cursor 4020 and performs an operation such as clicking according to the position where the burning composing point is to be corrected (the position of the correction point M1), The nearest line segment L1 is selected with respect to the correction point M1. Subsequently, as shown in FIG. 40 (d), the logical positional relationship between the burning composing points is updated so that the burning composing points P1 and P2 located at both ends of the line segment L1 and the correction point M1 are adjacent to each other. Based on the subsequent positional relationship, the contour line connecting adjacent burning composing points is updated. However, the contour line in the region 4030 and the contour of the burning 4000 are almost the same. Therefore, in the present embodiment, when adding a burning composing point, the user can select a burning composing point to be adjacent to the correction point by a simple method, and the correction (modification) of the burning composing point can be performed more accurately. It is possible.

  The configuration of the measurement processing unit 18 according to this embodiment is the same as that of the second embodiment. The procedure for correcting the burning composing point in this embodiment is substantially the same as the procedure shown in FIG. 23, but only the contents of the correction of the burning composing point in step SJ and the content of updating / adding the label table in step SK. Is different. Hereinafter, with reference to FIGS. 41 to 49, details of the procedure (steps SI, SJ, SK, SL) for correcting the burning composing point in this embodiment will be described.

  Label numbers (1 to 16) described in the label table are assigned to the burning composing points shown in FIG. For convenience of explanation, the label number is described in FIG. 41 and the like, but the label number is not displayed on the actual measurement screen. FIG. 45A shows a label table created in step SH of FIG. 23 before correcting the burning composing point.

  As shown in FIG. 41 (a), when the contour line connecting the burning composing points 4100 calculated by the burning composing point calculation unit 18d and the contour of the burning 4110 do not coincide very much, as shown in FIG. 41 (b). In addition, the user moves the cursor 4120 and performs an operation such as clicking according to the position where the burning composing point is to be corrected (the position of the correction point M1). At this time, the burning composing point correcting unit 18g calculates a line segment La connecting adjacent burning composing points as shown in FIG. 41 (c). The method for calculating the line segment La is the same as the method described in the third embodiment.

  The burning composing point correction unit 18g searches the calculated line segment La for a line segment nearest to the correction point M1. At this time, as shown in FIG. 41 (d), the burning composing point correction unit 18g calculates the midpoint 4130 (the midpoint of each line segment) of the two burning composing points constituting each line segment. The line segment having the nearest middle point with respect to the correction point M1 is the nearest line segment. As shown in FIG. 41 (e), the nearest line segment to the correction point M1 is a line segment L1 connecting the burning composing points with label numbers 5 and 6.

  After obtaining the nearest line segment L1 with respect to the correction point M1, the burning composing point correction unit 18g newly adds the correction point M1 to the burning composing point, and as shown in FIG. The contour line is updated based on the position of the constituent point. At this time, the burning composing point correction unit 18g updates the logical positional relationship between the burning composing points. For this reason, before the correction point M1 is added, the burning composing points of the label numbers 5 and 6 located at both ends of the line segment L1 are adjacent to each other, but after the correction point M1 is added, the burning of the label number 5 is performed. The composition point and the correction point M1 are adjacent to each other, and the correction point M1 and the burning composition point having the label number 6 are adjacent to each other.

  At this time, the label table is as shown in FIG. Compared with the label table in the initial state (FIG. 45A), the correction point M1 is added as a new burning composing point between the burning composing points with label numbers 5 and 6. The image coordinates of the burning composing point with the label number M1 are (Xm1, Ym1), and the adjacent label numbers 1 and 2 are 5 and 6, respectively. Further, the adjacent label number 2 of the burning composing point with label number 5 and the adjacent label number 1 of the burning composing point with label number 6 are changed to M1.

  However, as shown in FIG. 41 (f), the contour line in the region 4140 and the contour of the burning 4110 are almost inconsistent. In such a case, in this embodiment, it is possible to correct the burning composing point as follows. In particular, in the present embodiment, when the user designates the same correction point again without moving the cursor, the burning composing point adjacent to the correction point is changed.

  As shown in FIG. 42A, when the user performs an operation such as clicking again at the position of the correction point M1 without moving the cursor 4200, the burning composing point correction unit 18g deletes the information of the correction point M1. Then, the logical positional relationship between the burning composing points is returned to the state before the update. As a result, as shown in FIG. 46A, the label table returns to the same state as in FIG. The burning composing point correction unit 18g searches the already calculated line segment La for a line segment that is the second closest to the correction point M1 (a line segment that is the second closest to the correction point M1). In this case, as shown in FIG. 42 (a), the second closest segment to the correction point M1 is the segment L2.

  After obtaining the second nearest segment L2 with respect to the correction point M1, the burning composing point correction unit 18g newly adds the correction point M1 to the burning composing point, as shown in FIG. The contour line is updated based on the position of each burning composing point. At this time, the burning composing point correction unit 18g updates the logical positional relationship between the burning composing points. Therefore, before the correction point M1 is added, the burning composing points of the label numbers 4 and 5 located at both ends of the line segment L2 are adjacent to each other, but after the correction point M1 is added, the burning of the label number 4 is performed. The composing point and the correcting point M1 are adjacent to each other, and the correcting point M1 and the burning composing point with the label number 5 are adjacent to each other.

  At this time, the label table is as shown in FIG. Compared with the label table shown in FIG. 46A, the correction point M1 is added as a new burning composing point between the burning composing points with label numbers 4 and 5. The image coordinates of the burning composing point with the label number M1 are (Xm1, Ym1), and the adjacent label numbers 1 and 2 are 4 and 5, respectively. Further, the adjacent label number 2 of the burning composing point with label number 4 and the adjacent label number 1 of the burning composing point with label number 5 are changed to M1.

  Furthermore, as shown in FIG. 42 (c), when the user moves the cursor 4220 and performs an operation such as clicking according to the position (the position of the correction point M2) where the burning composing point is to be corrected, 18g calculates the line segment Lb which connected the adjacent burning composing points as shown in FIG.42 (d). Subsequently, the burning composing point correction unit 18g searches the calculated line segment Lb for the nearest line segment with respect to the correction point M2. As shown in FIG. 42 (e), the nearest line segment to the correction point M2 is a line segment L3 connecting the burning composing points with the label numbers 4 and M1.

  After obtaining the nearest line segment L3 with respect to the correction point M2, the burning composing point correction unit 18g newly adds the correction point M2 to the burning composing point, and as shown in FIG. The contour line is updated based on the position of the constituent point. At this time, the burning composing point correction unit 18g updates the logical positional relationship between the burning composing points. Therefore, before adding the correction point M2, the burning composing points of the label numbers 4 and M1 located at both ends of the line segment L3 are adjacent to each other. However, after adding the correction point M2, the burning of the label number 4 is performed. The composition point and the correction point M2 are adjacent to each other, and the correction point M2 and the burning composition point having the label number M1 are adjacent to each other.

  At this time, the label table is as shown in FIG. Compared with the label table shown in FIG. 46B, the correction point M2 is added as a new burning composing point between the burning composing points of the label numbers 4 and M1. The image coordinates of the burning composing point with the label number M2 are (Xm2, Ym2), and the adjacent label numbers 1 and 2 are 4 and M1, respectively. Furthermore, the adjacent label number 2 of the burning composing point with label number 4 and the adjacent label number 1 of the burning composing point with label number M1 are changed to M2.

  Further, as shown in FIG. 43 (b), when the user moves the cursor 4300 and performs an operation such as clicking according to the position (the position of the correction point M3) where the burning composing point is to be corrected, 18g calculates the line segment Lc which connected the adjacent burning composing points as shown in FIG.43 (c). Subsequently, the burning composing point correcting unit 18g searches the calculated line segment Lc for a line segment nearest to the correction point M3. As shown in FIG. 43 (d), the line segment nearest to the correction point M3 is a line segment L4 connecting the burning composing points with label numbers 4 and M2.

  After obtaining the nearest line segment L4 with respect to the correction point M3, the burning composing point correction unit 18g newly adds the correction point M3 to the burning composing point, and as shown in FIG. The contour line is updated based on the position of the constituent point. At this time, the burning composing point correction unit 18g updates the logical positional relationship between the burning composing points. Therefore, before adding the correction point M3, the burning composing points of the label numbers 4 and M2 located at both ends of the line segment L4 are adjacent to each other. However, after adding the correction point M3, the burning of the label number 4 is performed. The composing point and the correcting point M3 are adjacent to each other, and the correcting point M3 and the burning composing point having the label number M2 are adjacent to each other.

  At this time, the label table is as shown in FIG. Compared with the label table shown in FIG. 47A, a correction point M3 is added as a new burning composing point between the burning composing points of label numbers 4 and M2. The image coordinates of the burning composing point with the label number M3 are (Xm3, Ym3), and the adjacent label numbers 1 and 2 are 4 and M2, respectively. Further, the adjacent label number 2 of the burning composing point with label number 4 and the adjacent label number 1 of the burning composing point with label number M2 are changed to M3.

  However, as shown in FIG. 43 (e), the contour line in the region 4310 and the contour of the burning 4320 do not coincide very much. Therefore, the burning composing point adjacent to the correction point M3 is changed in the same manner as described above.

  As shown in FIG. 44A, when the user performs an operation such as clicking again at the position of the correction point M3 without moving the cursor 4400, the burning composing point correction unit 18g deletes the information of the correction point M3. Then, the logical positional relationship between the burning composing points is returned to the state before the update. As a result, as shown in FIG. 48A, the label table returns to the same state as in FIG. The burning composing point correction unit 18g searches the already calculated line segment Lc for a line segment that is the second closest to the correction point M3 (a line segment that is the second closest to the correction point M3). In this case, as shown in FIG. 44A, the second closest segment to the correction point M3 is a segment L5.

  After obtaining the second nearest segment L5 with respect to the correction point M3, the burning composing point correction unit 18g newly adds the correction point M3 to the burning composing point, as shown in FIG. The contour line is updated based on the position of each burning composing point. At this time, the burning composing point correction unit 18g updates the logical positional relationship between the burning composing points. For this reason, before the correction point M3 is added, the burning composing points of the label numbers M2 and M1 located at both ends of the line segment L5 are adjacent to each other. However, after the correction point M3 is added, the burning of the label number M2 is performed. The composing point and the correcting point M3 are adjacent to each other, and the correcting point M3 and the burning composing point having the label number M1 are adjacent to each other.

  At this time, the label table is as shown in FIG. Compared with the label table shown in FIG. 48A, the correction point M3 is added as a new burning composing point between the burning composing points of the label numbers M2 and M1. The image coordinates of the burning composing point with label number M3 are (Xm3, Ym3), and adjacent label numbers 1 and 2 are M2 and M1, respectively. Furthermore, the adjacent label number 2 of the burning composing point with label number M2 and the adjacent label number 1 of the burning composing point with label number M1 are changed to M3.

  However, as shown in FIG. 44 (b), the contour line in the region 4410 and the contour of the burning 4420 do not coincide very much. Therefore, the burning composing point adjacent to the correction point M3 is changed in the same manner as described above.

  As shown in FIG. 44C, when the user performs an operation such as clicking again at the position of the correction point M3 without moving the cursor 4400, the burning composing point correction unit 18g deletes the information of the correction point M3. Then, the logical positional relationship between the burning composing points is returned to the state before the update. As a result, as shown in FIG. 49A, the label table returns to the same state as in FIG. The burning composing point correcting unit 18g searches the already calculated line segment Lc for a line segment that is the third closest to the correction point M3 (a line segment that is the third closest to the correction point M3). In this case, as shown in FIG. 44 (c), the third closest segment to the correction point M3 is the segment L6.

  After obtaining the third nearest line segment L6 with respect to the correction point M3, the burning composing point correction unit 18g newly adds the correction point M3 to the burning composing point, as shown in FIG. The contour line is updated based on the position of each burning composing point. At this time, the burning composing point correction unit 18g updates the logical positional relationship between the burning composing points. For this reason, before the correction point M3 is added, the burning composing points of the label numbers M1 and 5 located at both ends of the line segment L6 are adjacent to each other. However, after the correction point M3 is added, the burning of the label number M1 is performed. The composition point and the correction point M3 are adjacent to each other, and the correction point M3 and the burning composition point having the label number 5 are adjacent to each other.

  At this time, the label table is as shown in FIG. Compared with the label table shown in FIG. 49A, the correction point M3 is added as a new burning composing point between the burning composing points of the label numbers M1 and M5. The image coordinates of the burning composing point with label number M3 are (Xm3, Ym3), and adjacent label numbers 1 and 2 are M1 and 5, respectively. Further, the adjacent label number 2 of the burning composing point with label number M1 and the adjacent label number 1 of the burning composing point with label number 5 are changed to M3.

  As a result, the contour line obtained by the correction method of the burning composing point in this embodiment is more than the shape of the contour line obtained by the method of correcting the burning composing point in the third embodiment (FIG. 40D). The shape (FIG. 44E) matches the burning contour more accurately.

  In the above, as shown in FIGS. 41 to 44, all processes for correcting the burning composing points are displayed on the measurement screen. Also, the label number attached to the burning composing point is not displayed. However, the present invention is not limited to this, and part of the process for correcting the burning composing point may be hidden or the label number may be displayed. Although not particularly shown, a preview icon is provided on the measurement screen as in the modification of the second embodiment, so that the state of the corrected burning composing point can be restored or advanced. You may do it.

  As described above, according to the present embodiment, the logical positional relationship between the burning composing points is set so that the newly added burning composing point and the burning composing point selected based on the instruction from the user are adjacent to each other. By correcting (in other words, correcting the contour line so that the newly added burning composing point and the burning composing point selected based on the instruction from the user are connected by a line segment) It can correct correctly and can raise the calculation precision of burning size.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described. In the method for correcting a burning composing point in the second embodiment, an outline formed by a line segment connecting the burning composing points may be twisted depending on the shape of the burning. For example, when the burning composing point is calculated for the burning 5000 having the shape shown in FIG. 50A as in the first embodiment, the burning composing point 5010 is calculated as shown in FIG. Is done.

  In the second embodiment, as shown in FIG. 50C, when the user moves the cursor 5020 for the purpose of correcting the burning composing point P1, and performs an operation such as clicking at the position shown in FIG. The burning composing point P2 nearest to the cursor 5020 is corrected. However, as shown in FIG. 50 (d), this correction causes a twist where the contour lines intersect, and the burning area (spatial area) cannot be calculated. Therefore, in the present embodiment, when the user corrects the burning composing point, the burning composing point to be corrected is automatically selected so that the contour line does not become a twisted shape, so that the burning composing point can be corrected more accurately. Modification (modification) is possible.

  The configuration of the measurement processing unit 18 according to this embodiment is the same as that of the second embodiment. The procedure for correcting the burning composing point in this embodiment is substantially the same as the procedure shown in FIG. 23, but only the contents of the correction of the burning composing point in step SJ and the content of updating / adding the label table in step SK. Is different. Hereinafter, with reference to FIGS. 51 to 54, details of the procedure (steps SI, SJ, SK, SL) for correcting the burning composing point in the present embodiment will be described.

  The burning composing points shown in FIG. 51 and the like are given the label numbers (1 to 16) described in the label table. For convenience of explanation, the label number is described in FIG. 51 and the like, but the label number is not displayed on the actual measurement screen. FIG. 52A shows a label table created in step SH of FIG. 23 before correcting the burning composing point.

  As shown in FIG. 51 (a), when the contour line connecting the burning composing points 5100 calculated by the burning composing point calculation unit 18d and the contour of the burning 5110 do not coincide very much, as shown in FIG. 51 (b). In addition, the user moves the cursor 5120 and performs an operation such as clicking according to the position where the burning composing point is to be corrected (the position of the correction point M). At this time, as in the second embodiment, the burning composing point correcting unit 18g corrects the position of the burning composing point with the label number 16 that is closest to the correcting point M, as shown in FIG. Correct to the position of point M. The label table at this time is as shown in FIG. 52B, and the image coordinates of the burning composing point with label number 16 become the coordinates (Xm, Ym) of the correction point M.

  Further, the burning composing point correcting unit 18g calculates line segments L1 and L2 connecting the corrected burning composing point with the label number 16 and the burning composing point adjacent thereto. From the label table shown in FIG. 53A, the line segment L1 is a line segment connecting the burning composing points with label numbers 1 and 16, and the line segment L2 is the line segment connecting the burning composing points with label numbers 15 and 16. It is. Specifically, the line segment L1 is a line segment connecting coordinates (X1, Y1) and (Xm, Ym), and the line segment L2 is a line segment connecting coordinates (X15, Y15) and (Xm, Ym). It is.

  The burning composing point correcting unit 18g determines whether or not the calculated line segments L1 and L2 have intersections with the respective line segments connecting the other adjacent burning composing points (in other words, whether or not the shape of the contour line is a twisted shape). Check). As shown in FIG. 51 (c), the line segment L3 connecting the burning composing points with the label numbers 2 and 3 has intersections with the line segments L1 and L2. Specifically, the line segment L3 is a line segment connecting the coordinates (X2, Y2) and (X3, Y3).

  When a line segment having an intersection with the line segments L1 and L2 is found, as shown in FIG. 51 (d), the burning composing point correcting unit 18g uses the corrected burning composing point with the label number 16 as the original position (corrected). Return to the previous position. The label table at this time is as shown in FIG. The coordinates of the burning composing point with label number 16 are (X16, Y16), and the label table is the same as that in FIG.

  Since it has been found that twisting occurs when the nearest burning composing point with respect to the correction point M is moved to the position of the correction point M, the burning composing point correction unit 18g moves the other burning composing point to the position of the correction point M. Moving. Specifically, as shown in FIG. 51 (e), the burning composing point correcting unit 18 g corrects the position of the burning composing point with the label number 3 that is second closest to the correcting point M to the position of the correcting point M. To do. The label table at this time is as shown in FIG. 54A, and the coordinates of the burning composing point with label number 3 are (Xm, Ym).

  Further, the burning composing point correcting unit 18g calculates line segments L4 and L5 connecting the corrected burning composing point with the label number 3 and the burning composing point adjacent thereto. From the label table shown in FIG. 54B, line segment L4 is a line segment connecting the burning composing points with label numbers 2 and 3, and line segment L5 is a line segment connecting the burning composing points with label numbers 3 and 4. It is. Specifically, the line segment L4 is a line segment connecting coordinates (X2, Y2) and (Xm, Ym), and the line segment L5 is a line segment connecting coordinates (Xm, Ym) and (X4, Y4). It is.

  The burning composing point correcting unit 18g determines whether or not the calculated line segments L4 and L5 have intersections with the respective line segments connecting the other adjacent burning composing points (in other words, whether or not the shape of the contour line is a twisted shape). Check). As shown in FIG. 51 (e), since there is no line segment that intersects with the line segments L4 and L5, the burning composing point correcting unit 18g determines the burning composing point to be corrected as the burning composing point with the label number 3. To do. As a result, as shown in FIG. 51 (f), it is possible to correct the burning composing point so that the shape of the contour line does not become a twisted shape.

  In the above example, the burning composing point correction unit 18g can determine the burning composing point to be corrected in the second correction of the burning composing point. The check of whether the shape is a twisted shape will be repeated further. If the burning composing point to be corrected cannot be determined even after repeating the check, the burning composing point is not corrected.

  In the above, not all the processes for eliminating the twist shape shown in FIG. 51 are displayed on the measurement screen, but when the user designates a correction point as shown in FIG. The state where the correction of the burning composing point is completed as shown in (f) is displayed. Also, the label number attached to the burning composing point is not displayed. However, the present invention is not limited to this, and all the processes for correcting the burning composing point may be displayed, or the label number may be displayed. Although not particularly shown, a preview icon is provided on the measurement screen as in the modification of the second embodiment, so that the state of the corrected burning composing point can be restored or advanced. You may do it.

  Next, a modification of this embodiment will be described. After the burning composing point is corrected, when the contour shape is a twisted shape, as shown in FIG. 55A, a warning message box 5500 that warns that the contour shape is a twisted shape. May be displayed. When the user moves the cursor 5510 over the “Yes” icon 5520 in the message box 5500 and performs an operation such as a click, the burning composing point correction unit 18g, as described above, sets the corrected burning composing point to the original position. And the user redoes the correction.

  When the user designates “No” icon 5521 with cursor 5510, burning size calculation unit 18 e performs burning calculation in a state where the burning composing points are corrected. Then, as shown in FIG. 55B, a result window 5530 is displayed on the measurement screen. However, since the area cannot be calculated when the contour shape is a twisted shape, “A = WRONG FIG” (FIG means “FIGURE”) is displayed for the area.

  As described above, according to the present embodiment, the burning composing point to be corrected is automatically selected so that the shape of the contour line after correcting the burning composing point does not become a twisted shape. A situation in which (space area) cannot be calculated can be avoided. Further, the burning composing point is corrected in the same manner as the correction method in the second embodiment, so that the burning composing point can be corrected more accurately and the calculation accuracy of the burning size can be increased.

  As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the above-described embodiments, and includes design changes and the like without departing from the gist of the present invention. .

It is a block diagram which shows the structure of the endoscope apparatus for measurement by the 1st Embodiment of this invention. It is a block diagram which shows the structure of the measurement process part with which the endoscope apparatus for measurement by the 1st Embodiment of this invention is provided. It is a reference figure showing a reference point and a reference line in the first embodiment of the present invention. It is a reference figure showing the standard ellipse in the 1st embodiment of the present invention. FIG. 5 is a reference diagram showing search points, search areas, and burning composing points in the first embodiment of the present invention. It is a reference figure which shows the burning size in the 1st Embodiment of this invention. It is a reference figure which shows the measurement screen (before measurement start) in the 1st Embodiment of this invention. It is a flowchart which shows the procedure of the measurement in the 1st Embodiment of this invention. It is a reference figure which shows the measurement screen (at the time of measurement) in the 1st Embodiment of this invention. It is a reference figure which shows the measurement screen (at the time of measurement and the time of a measurement end) in the 1st Embodiment of this invention. It is a reference figure showing the relation between the position of the cursor and the size of the reference ellipse in the first embodiment of the present invention. It is a reference figure which shows the relationship between the position of the cursor in the 1st Embodiment of this invention, and the shape of a reference | standard ellipse. It is a flowchart which shows the procedure of the burning calculation in the 1st Embodiment of this invention. It is a flowchart which shows the procedure of the search point calculation process in the 1st Embodiment of this invention. It is a reference figure which shows the number of search points in the 1st Embodiment of this invention, and the property of an interval. It is a flowchart which shows the procedure of the search area calculation process in the 1st Embodiment of this invention. It is a reference figure which shows the property of the size of the search area in the 1st Embodiment of this invention. It is a flowchart which shows the procedure of the burning composing point calculation process in the 1st Embodiment of this invention. It is a reference figure which shows the procedure of the burning composing point calculation process in the 1st Embodiment of this invention. It is a flowchart which shows the procedure of the burning size calculation process in the 1st Embodiment of this invention. It is a block diagram which shows the structure of the measurement process part with which the endoscope apparatus for measurement by the 2nd Embodiment of this invention is provided. It is a reference diagram for demonstrating the subject used as the premise of the 2nd Embodiment of this invention. It is a flowchart which shows the correction procedure of the burning composing point in the 2nd Embodiment of this invention. It is a reference diagram showing a measurement screen (during modification) in the second embodiment of the present invention. It is a reference diagram showing a measurement screen (during modification) in the second embodiment of the present invention. It is a reference figure which shows the correction procedure of the burning composing point in the 2nd Embodiment of this invention. It is a flowchart which shows the procedure of the burning recalculation in the 2nd Embodiment of this invention. It is a reference figure which shows the label table | surface in the 2nd Embodiment of this invention. It is a reference figure which shows the label table | surface in the 2nd Embodiment of this invention. It is a flowchart which shows the correction procedure of the burning composing point in the 2nd Embodiment of this invention. It is a reference diagram showing a measurement screen (during modification) in the second embodiment of the present invention. It is a reference diagram showing a measurement screen (during modification) in the second embodiment of the present invention. It is a reference diagram showing a measurement screen (during modification) in the second embodiment of the present invention. It is a reference figure which shows the mode of correction of the burning composing point in the 2nd Embodiment of this invention. It is a reference figure which shows the correction procedure of the burning composing point in the 3rd Embodiment of this invention. It is a reference figure which shows the correction procedure of the burning composing point in the 3rd Embodiment of this invention. It is a reference figure which shows the correction procedure of the burning composing point in the 3rd Embodiment of this invention. It is a reference figure which shows the label table | surface in the 3rd Embodiment of this invention. It is a reference figure which shows the label table | surface in the 3rd Embodiment of this invention. It is a reference figure which shows the mode of correction of the burning composing point in the 3rd Embodiment of this invention. It is a reference figure which shows the correction procedure of the burning composing point in the 4th Embodiment of this invention. It is a reference figure which shows the correction procedure of the burning composing point in the 4th Embodiment of this invention. It is a reference figure which shows the correction procedure of the burning composing point in the 4th Embodiment of this invention. It is a reference figure which shows the correction procedure of the burning composing point in the 4th Embodiment of this invention. It is a reference figure which shows the label table | surface in the 4th Embodiment of this invention. It is a reference figure which shows the label table | surface in the 4th Embodiment of this invention. It is a reference figure which shows the label table | surface in the 4th Embodiment of this invention. It is a reference figure which shows the label table | surface in the 4th Embodiment of this invention. It is a reference figure which shows the label table | surface in the 4th Embodiment of this invention. It is a reference figure which shows the mode of correction of the burning composing point in the 2nd Embodiment of this invention. It is a reference figure which shows the correction procedure of the burning composing point in the 5th Embodiment of this invention. It is a reference figure which shows the label table | surface in the 5th Embodiment of this invention. It is a reference figure which shows the label table | surface in the 5th Embodiment of this invention. It is a reference figure which shows the label table | surface in the 5th Embodiment of this invention. It is a reference diagram showing a measurement screen in the fifth embodiment of the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Measuring endoscope apparatus, 18 ... Measurement processing part, 18a ... Control part (signal processing part), 18b ... Reference point designation | designated part, 18c ... Reference ellipse calculation part, 18d ... Burning composing point calculating unit (composing point calculating unit), 18e ... Burning size calculating unit (size calculating unit), 18f ... Storage unit, 18g ... Burning composing point correcting unit (composing point correcting unit) )

Claims (9)

An electronic endoscope that images a measurement object and generates an imaging signal, a video signal generation unit that generates a video signal based on the imaging signal, and a measurement that performs measurement processing of the measurement object based on the video signal In an endoscope apparatus including a processing unit,
The measurement processing unit
A reference point designating unit for designating three reference points on the image based on the video signal;
The video signal is processed in an image region based on each of a plurality of points set on a line determined by the three reference points specified by the reference point specifying unit, and constituent points constituting the measurement target region are calculated. A component point calculator,
A composition point modification unit for modifying the composition point based on an instruction from the user;
A size calculator that calculates the size of the measurement object based on the component points;
An endoscope apparatus comprising:   The component point correcting unit is configured to determine the position of the component point selected by the user based on the position indicated by the user on the image based on the video signal and the position of the component point calculated by the component point calculation unit. The endoscope apparatus according to claim 1, wherein the endoscope apparatus is corrected to the designated position.   The component point correcting unit further determines whether or not a shape of a contour line formed by line segments connecting the component points including the corrected component point is a twisted shape. The endoscope apparatus according to 2.   The endoscope apparatus according to claim 1, wherein the component point correction unit adds a new component point at a position designated by a user on an image based on the video signal.   The component point correcting unit is further configured by a line connecting the component points based on the position of the component point calculated by the component point calculating unit and the position of the newly added component point. The endoscope apparatus according to claim 4, wherein an outline is determined.   The component point correcting unit further determines the contour line so that the newly added component point and the component point selected based on an instruction from a user are connected by a line. 4. The endoscope apparatus according to 4. A storage unit that stores correction result information indicating a result of correction performed by the component point correction unit;
The said composition point correction | amendment part further correct | amends the said composition point after correction which the said correction result information selected based on the instruction | indication from a user shows based on the instruction | indication from a user. Endoscope device.   The component point calculation unit performs binarization processing of the video signal in an image region based on each of the plurality of points, and extracts an edge of the measurement target region based on the video signal after binarization processing. The endoscope apparatus according to claim 1, wherein an approximate line that approximates the edge is calculated, and the constituent points on the edge are calculated based on the approximate line. . An electronic endoscope that images a measurement object and generates an imaging signal, an image processing unit that generates a video signal based on the imaging signal, and a measurement process that performs measurement processing of the measurement object based on the video signal In a program for controlling an endoscope apparatus provided with a unit,
The measurement processing unit is
A reference point designating unit for designating three reference points on the image based on the video signal;
The video signal is processed in an image region based on each of a plurality of points set on a line determined by the three reference points specified by the reference point specifying unit, and constituent points constituting the measurement target region are calculated. A component point calculator,
A composition point modification unit for modifying the composition point based on an instruction from the user;
A size calculator that calculates the size of the measurement object based on the component points;
Program to function as.

Images