JP2017003364A - Imaging apparatus, image processing apparatus, control method of imaging apparatus, and image processing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging apparatus, an image processing apparatus, a control method of an imaging apparatus, and an image processing program which are capable of measuring a measurement target more simply.SOLUTION: An imaging apparatus according to one embodiment comprises: a focus control part which controls an imaging optical system so as to focus on a target reinforcing-bar being a reinforcing-bar of a focusing target; an imaging part which performs imaging in a focused state on the target reinforcing-bar to acquire a focused image; an information acquisition part which acquires a subject distance being a distance to the target reinforcing-bar and a focal length of the imaging optical system; a diameter calculation part which calculates a diameter of the target reinforcing-bar based on the subject distance, the focal length, and a width of an image of the target reinforcing-bar in the focused image.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an imaging apparatus, an image processing apparatus, an imaging apparatus control method, and an image processing program.

  A technique for measuring the length of a subject from an image has been put into practical use. In such a method, an actual dimension of the measurement target is calculated based on an image in which a measurement reference having a known dimension is copied together with a subject to be measured.

JP-A-10-281728

  In the above method, since it is necessary to copy the measurement standard together with the measurement object, when there are a large number of measurement objects, there is a problem that it is troublesome to acquire the image and calculate the dimensions of the measurement object. In addition, for example, when an object in the depth direction such as a structure in which reinforcing bars are combined is used as a measurement target, there is a problem that the measurement target needs to be imaged from a plurality of different angles.

  It is an object of the present invention to provide an imaging apparatus, an image processing apparatus, an imaging apparatus control method, and an image processing program that can measure a measurement target more easily.

  An imaging apparatus according to an embodiment includes an in-focus control unit that controls an imaging optical system so as to focus on a target rebar that is a rebar to be focused, and captures an in-focus state while focusing on the target rebar. An imaging unit that acquires an image, a subject distance that is a distance to the target reinforcing bar, and an information acquisition unit that acquires a focal length of the imaging optical system, the subject distance, the focal length, and the focused image And a diameter calculating unit that calculates the diameter of the target reinforcing bar based on the width of the image of the target reinforcing bar.

  An imaging apparatus, an image processing apparatus, a control method for the imaging apparatus, and an image processing program that can measure a measurement target more easily can be provided.

FIG. 1 is a diagram for describing an example of a usage example of an imaging apparatus according to an embodiment. FIG. 2 is a diagram for explaining an example of a control system of the imaging apparatus according to the embodiment. FIG. 3 is a diagram for explaining an example of reinforcing bar measurement in the imaging apparatus according to the embodiment. FIG. 4 is a diagram for explaining an example of the sensor shift operation by the imaging apparatus according to the embodiment. FIG. 5 is a diagram for explaining a display example of a screen in the imaging apparatus according to the embodiment. FIG. 6 is a diagram for explaining a display example of a screen in the imaging apparatus according to the embodiment. FIG. 7 is a diagram for describing an example of processing of the imaging apparatus according to an embodiment. FIG. 8 is a diagram for explaining an example of processing of the imaging apparatus according to an embodiment. FIG. 9 is a diagram for explaining an example of processing of the imaging apparatus according to the embodiment.

  Hereinafter, an imaging apparatus, an image processing apparatus, a control method for the imaging apparatus, and an image processing program according to an embodiment will be described in detail with reference to the drawings.

  FIG. 1 is an explanatory diagram showing an example in the case of imaging a structure 2 configured by arranging a plurality of reinforcing bars by the imaging device 1. The imaging apparatus 1 is an apparatus that is used at a construction site, for example, and acquires an image of the structure 2, the diameter, interval, number, etc. of reinforcing bars constituting the structure 2.

  The structure 2 includes a main reinforcing bar 3 provided along a direction in which a force is applied and a distribution reinforcing bar 4 provided in a direction orthogonal to the direction in which the force is applied. For example, when the structure 2 is used for a column of a reinforced concrete structure, the main reinforcing bar 3 is provided in the vertical direction and the distribution reinforcing bar is provided in the horizontal direction. For example, when the structure 2 is used for a beam having a reinforced concrete structure, the main reinforcing bar 3 is provided in the horizontal direction, and the distribution reinforcing bar is provided in a direction orthogonal to the main reinforcing bar 3.

  The imaging device 1 acquires design information stored in the server 5 via the network N. The design information includes construction information for each construction project, a list of construction sites for each construction subject, a list of site names such as columns or beams for each construction site, and reinforcing bar arrangement information indicating the arrangement of reinforcing bars for each site name.

  The imaging device 1 focuses the plurality of main reinforcing bars 3 constituting the structure 2 for each part name, and acquires a plurality of focused images as a bar arrangement photograph. The imaging device 1 measures the diameters of the main reinforcing bars 3 and the reinforcing reinforcing bars 4 and the intervals (pitch) between the plurality of main reinforcing bars 3 based on the acquired reinforcing bar photographs. The imaging device 1 adds the measurement result and the bar arrangement photo to the bar arrangement information. The imaging apparatus 1 uploads the arrangement information to which the measurement result and the arrangement photograph are added to the server 5. Further, the imaging apparatus 1 may be configured to add the measurement result and the bar arrangement photo to the bar arrangement information on the server 5 by uploading the measurement result and the bar arrangement photo to the server 5.

  FIG. 2 is a block diagram illustrating an example of the configuration of the imaging apparatus 1.

  As shown in FIG. 2, the imaging device 1 includes a lens 10, a shutter unit 11, an imaging device 12, a signal processing unit 13, an image processing unit 14, an operation unit 15, a display unit 16, a memory I / F 17, a communication unit 18, A sound collection unit 19 and a main control unit 20 are provided.

  The lens 10 focuses the transmitted light on the image sensor 12. The lens 10 includes an imaging lens 21 in which a plurality of lenses are combined, an aperture mechanism 22, a lens control unit 23 that controls operations of the imaging lens 21 and the aperture mechanism 22, and an operation member.

  The imaging lens 21 focuses light rays from the subject on the imaging surface of the imaging element 12. The imaging lens 21 includes a focusing lens (focus lens), a lens for changing a focal length (variator lens and compensator lens), a relay lens, and the like. The imaging lens 21 forms a subject image on the imaging surface of the imaging element 12 by moving the focus lens in the optical axis direction of the imaging lens 21 based on the control of the lens control unit 23 or the operation of the operation member. The imaging lens 21 changes the focal length by moving the variator lens and the compensator lens in the optical axis direction of the imaging lens 21 based on the control of the lens control unit 23 or the operation of the operation member.

  The aperture mechanism 22 is configured to be openable and closable, and adjusts the amount of light incident on the image sensor 12 via the imaging lens 21 based on the control of the lens control unit 23.

  The lens control unit 23 is configured to be communicable with the main control unit 20. The lens control unit 23 controls the driving of the focus lens, the variator lens and the compensator lens, and the driving of the diaphragm mechanism 22 according to the input from the main control unit 20 or the operation of the operation member.

  In addition, the lens control unit 23 can detect the focal length of the imaging lens 21 by detecting the positions of the variator lens and the compensator lens. The lens control unit 23 inputs the detected focal length of the imaging lens 21 to the main control unit 20.

  In addition, the lens control unit 23 detects the position of the focus lens at the time of focusing (focusing position), and the distance from the principal point of the imaging lens 21 to the subject to be focused (subject distance), and the principal point It is possible to detect the distance (image distance) from the image pickup device 12 to the image pickup surface. The lens control unit 23 inputs the detected subject distance and image distance to the main control unit 20. When the imaging lens 21 is a thick lens, the subject distance is a distance from the front principal point to the subject to be focused, and the image distance is a distance from the rear principal point to the imaging surface.

  The shutter unit 11 is a mechanism that adjusts the amount of light that passes through the lens 10 and enters the image sensor 12. The shutter unit 11 is a focal plane shutter, for example.

  The image sensor 12 is provided at the rear of the lens 10, that is, on the inner side of the housing of the image pickup apparatus 1. The imaging device 12 includes an imaging surface configured by arranging a plurality of imaging pixels that photoelectrically convert light and store charges. A color filter is provided on a surface on which light of each imaging pixel is incident. The image sensor 12 is configured by, for example, a charge coupled device (CCD) image sensor, a complementary metal oxide semiconductor (CMOS) image sensor, or another image sensor. The image sensor 12 generates an image signal by converting a subject image collected through the lens 10 and formed on the imaging surface into an electric signal corresponding to the amount of light.

Furthermore, the imaging element 12 has a plurality of AF areas on the imaging surface. In the AF area, a plurality of imaging pixels, a plurality of first focusing pixels, and a plurality of second focusing pixels are arranged. The first focusing pixel and the second focusing pixel are limited at positions where the incident areas are different. The first focusing pixel and the second focusing pixel photoelectrically convert incident light as in the imaging pixel and store charges. The imaging surface of the imaging element 12 is configured by, for example, a plurality of imaging pixels arranged in a two-dimensional manner. Although it is described as a two-dimensional shape, this is not necessarily a concept excluding an image sensor having sensitivity in the depth direction and an image sensor having a random pixel arrangement, and has at least pixels arranged on a plane. If any, these are included. In recent years, a curved sensor with an imaging surface curved to prevent aberrations has also been announced, but this also includes a two-dimensional array, so it is described as being two-dimensional in a broad sense. .

The signal processing unit 13 reads out the image signal generated by the image sensor 12 based on the control of the main control unit 20. The signal processing unit 13 performs various signal processing on the read image signal based on the control of the main control unit 20. The signal processing unit 13 converts the image signal subjected to the signal processing into image data of a digital signal and inputs it to the main control unit 20.

  As described above, the lens 10, the imaging element 12, and the signal processing unit 13 constitute an imaging unit. The imaging unit acquires image data when the imaging element 12 images the light imaged on the imaging surface by the lens 10. The imaging unit acquires image data as a still image by the above imaging operation. The imaging unit continuously acquires image data to be displayed as a through image when the imaging operation is not performed. For example, the imaging unit can acquire continuous image data that can be displayed as a through image by reading out an image signal captured by the imaging element 12 by the signal processing unit 13 in a cycle based on the control of the main control unit 20. it can.

  The image processing unit 14 performs various types of image processing such as color correction, gamma (γ) correction, contrast correction, monochrome / color mode processing, and through image processing on the image data based on the control of the main control unit 20. . Further, the image processing unit 14 compresses the image data using the Jpeg method based on the control of the main control unit 20 and converts the image data into Jpeg data that is Jpeg method image data. The image processing unit 14 inputs Jpeg data to the main control unit 20.

  The operation unit 15 includes a plurality of operation members for the user to perform various operations on the imaging apparatus 1. The operation members include, for example, a touch sensor 15a, a release button 15b, a cross button 15c, and various other buttons. The touch sensor 15a is, for example, a resistive touch sensor or a capacitive touch sensor. That is, the touch sensor 15a is a specified position acquisition unit that acquires information indicating a specified position in a certain area. The touch sensor 15a is provided integrally with a display panel 31 of the display unit 16 described later, detects a signal (touch position signal) indicating a touched position on the display panel 31, and uses the detected touch position signal as a main control unit. 20

  The release button is an operation member for the user to instruct the imaging device 1 to perform an operation for acquiring an image and imaging assistance control. The operation unit 15 gives an instruction for auxiliary imaging control such as automatic exposure (AE) processing and automatic focusing (AF) processing to the main control unit 20 when the release button is pressed halfway. The operation unit 15 gives an operation instruction for acquiring an image to the main control unit 20 when the release button is fully pressed.

  The cross button 15c is an operation member for the user to instruct the imaging device 1 to perform the up / down / left / right selection operation. For example, the operation unit 15 gives an instruction to the main control unit 20 to select the up / down / left / right selection in various menus according to the operation of the cross button by the user.

  The display unit 16 displays a screen based on the image data input from the main control unit 20. The display unit 16 includes a display device and a drive circuit that causes the display device to display a screen based on the image data. The display unit 16 includes, for example, a display panel 31 as a display device.

  The display panel 31 is a display device for displaying, for example, a liquid crystal display, an organic EL display, or another screen. The display panel 31 functions as a touch panel (touch screen) by combining the touch sensors 15a described above. The display panel 31 is provided on a support body that is provided so as to be rotatable from the back surface of the housing of the imaging device 1. The support body is provided in a state of being rotatable around the axis of a hinge provided on the back surface of the housing. Thereby, the angle of the display panel 31 can be changed.

  The memory I / F 17 includes a card slot into which a recording medium M having a plurality of contact terminals can be inserted, and a contact terminal that is electrically connected to the contact terminals of the recording medium M when the recording medium M is inserted into the card slot. And comprising. The recording medium M is a memory card, for example. The memory I / F 17 relays data input / output between the recording medium M and the main control unit 20.

  The communication unit 18 is an interface for connecting to the network N. The communication unit 18 can communicate with the server 5 connected to the network N by connecting to the network N. The communication unit 18 can communicate with other devices connected to the network N by performing wireless communication with an access point (not shown) connected to the network N, for example. The communication unit 18 may be configured to communicate with another device connected to the network N by performing wired communication with a router (not shown) connected to the network N, for example.

  The sound collection unit 19 collects sound. For example, the sound collection unit 19 is a stereo microphone. The sound collection unit 19 obtains digital sound data by converting sound into an analog electric signal and converting the electric signal into a digital signal. The sound collection unit 19 inputs the acquired audio data to the main control unit 20.

  The main control unit 20 controls the operation of each unit of the imaging device 1. The main control unit 20 includes, for example, a CPU and a memory. The main control unit 20 implements various functions by, for example, the CPU reading and executing a program stored in the memory. For example, the main control unit 20 functions as an operation determination unit 41, an imaging control unit 42, a focus control unit 43, a recording control unit 44, a display control unit 45, and a reinforcing bar measurement unit 46.

  The operation determination unit 41 determines the operation input by the operation unit 15. That is, the operation determination unit 41 recognizes what operation is instructed by the operation unit 15. Further, the operation determination unit 41 recognizes which position on the display panel 31 is touched based on the touch position signal input from the touch sensor 15 a of the operation unit 15.

  The imaging control unit 42 executes an operation for acquiring an image by controlling each unit. For example, the imaging control unit 42 drives the aperture mechanism 22 by the lens control unit 23 by inputting a control signal to the lens control unit 23 of the lens 10. Furthermore, the imaging control unit 42 drives the shutter unit 11 to execute an imaging operation for capturing an image.

  The imaging control unit 42 controls acquisition of image data that can be displayed as a through image by the imaging unit. For example, the imaging control unit 42 controls the signal processing unit 13 so as to read the image signal generated by the imaging element 12 at a preset cycle.

  Further, the imaging control unit 42 may be configured to perform, for example, automatic exposure (AE) processing, white balance (WB) adjustment processing, and other various processing.

  The focusing control unit 43 searches for an in-focus state in which an arbitrary subject in the search area (AF area) is in focus based on the light beam that has passed through the imaging lens 21, thereby automatically focusing (AF). Process. When performing the contrast AF, the focus control unit 43 drives the focus lens in the optical axis direction, acquires an image, calculates an evaluation value of blur in the search area of the acquired image, and increases or decreases the evaluation value. Based on this, the in-focus position is estimated. In addition, when performing the phase difference AF, the focus control unit 43 determines the subject to be focused on in the image data obtained from the first focus pixel and the second focus pixel on the imaging surface. The in-focus position is estimated based on the image interval. The focus control unit 43 can obtain a focused state by driving the focus lens of the imaging lens 21 and disposing it at the focus position.

  The recording control unit 44 includes an intermediate buffer that temporarily records an image. The recording control unit 44 sequentially records the images acquired by the imaging operation in the intermediate buffer. The recording control unit 44 converts the image recorded in the intermediate buffer into a file and writes it in the recording medium M mounted in the memory I / F 17.

  The display control unit 45 controls display processing by the display unit 16. For example, the display control unit 45 causes the display device of the display unit 16 to display a screen by inputting image data to the display unit 16. For example, the display control unit 45 causes the display unit 16 to display a still image by inputting the image data acquired by the imaging operation to the display unit 16. Further, the display control unit 45 causes the display unit 16 to display a through image by inputting the image data continuously acquired by the imaging unit to the display unit 16.

  Further, the display control unit 45 displays OSD data for causing the display unit 16 to display an on-screen display (OSD) display including display of various icons and characters based on various setting information and the state of the imaging device 1. Is generated. For example, the display control unit 45 displays OSD data for causing the display device of the display unit 16 to display the shooting mode of the imaging device 1, various setting information, the remaining battery level, the number of shootable images and the shootable time, and the AF area. Is generated. The display control unit 45 inputs image data on which the OSD display based on the OSD data is superimposed to the display unit 16.

  The reinforcing bar measurement unit 46 performs a reinforcing bar measurement process for measuring a reinforcing bar. First, the reinforcing bar measurement unit 46 controls each unit so as to perform a focused image acquisition process for acquiring a focused image in a state of being focused on the plurality of main reinforcing bars 3 constituting the structure 2. The reinforcing bar measuring unit 46, based on the acquired focused image, the diameter of the main reinforcing bar 3 and the distribution reinforcing bar 4 constituting the structure 2, the pitch of the main reinforcing bar 3, the number of the main reinforcing bars 3, and the depth difference of the main reinforcing bar. Measurement process to measure.

  The reinforcing bar measurement unit 46 detects a reinforcing bar reflected in the image acquired by the imaging unit as a subject. For example, the reinforcing bar measurement unit 46 detects a reinforcing bar reflected in an image by using space recognition, pattern recognition, object recognition, or the like. Specifically, the reinforcing bar measurement unit 46 detects a plurality of main reinforcing bars 3 configured as the structure 2 as subjects by detecting a rod-like object from the image. Reinforcing bars appearing in the image are detected. Further, the reinforcing bar measuring unit 46 may be configured to detect a reinforcing bar based on a color or a pattern.

  Furthermore, the reinforcing bar measurement unit 46 specifies a target reinforcing bar that is a reinforcing bar to be focused out of the plurality of main reinforcing bars 3 detected as the subject. The reinforcing bar measurement unit 46 causes the focusing control unit 43 to perform automatic focusing on the target reinforcing bar as a focusing target. The reinforcing bar measurement unit 46 controls the imaging unit and the imaging control unit 42 to acquire a focused image in a state where the target reinforcing bar is focused.

  More specifically, the reinforcing bar measurement unit 46 first specifies a reinforcing bar farthest from the imaging device 1 among the plurality of main reinforcing bars 3 detected as the subject as a target reinforcing bar, and acquires a focused image. The reinforcing bar measurement unit 46 acquires a plurality of focused images with each main reinforcing bar 3 as a target reinforcing bar by acquiring a focused image while switching the target reinforcing bar that is a focusing target. For example, the reinforcing bar measurement unit 46 specifies each main reinforcing bar 3 as the target reinforcing bar in order of increasing subject distance and acquires a focused image. In addition, when there are a plurality of main reinforcing bars 3 whose subject distance difference is less than a preset threshold, a focused image may be acquired using the plurality of main reinforcing bars 3 as target reinforcing bars.

  The main control unit 20 stores, for example, a reinforcing bar measurement application (rebar measuring program) for reinforcing bar measurement in the ROM. The main control unit 20 implements various functions of the reinforcing bar measurement unit 46 by executing the reinforcing bar measurement application. The reinforcing bar measurement unit 46 includes an information acquisition unit 47, a diameter calculation unit 48, an interval calculation unit 49, a number acquisition unit 50, a depth difference acquisition unit 51, a bar arrangement information processing unit 52, an inclination detection unit 53, a warning unit 54, and the like. Provide functional blocks.

  The information acquisition unit 47 acquires the subject distance, the image distance, and the focal length when the imaging lens 21 is focused on the target reinforcing bar from the lens 10. That is, the information acquisition unit 47 acquires the subject distance and the image distance for each focused image. The information acquisition unit 47 may be configured to calculate the image distance based on the subject distance and the focal distance.

  In addition, the information acquisition unit 47 accesses the server 5 through the communication unit 18 and acquires design information for each construction project. Thereby, the information acquisition part 47 acquires the arrangement information which shows arrangement | positioning, the number, etc. of the some reinforcing bar which comprises the structure 2. FIG. The information acquisition unit 47 may be configured to acquire the bar arrangement information stored in the recording medium M instead of acquiring the bar arrangement information from the server 5.

As shown in FIG. 3, the diameter calculation unit 48 calculates the diameter R of the target reinforcing bar based on the focused image and the subject distance and image distance corresponding to the focused image. The diameter calculating unit 48 first calculates the width r of the image of the target reinforcing bar on the imaging surface based on the width of the target reinforcing bar in the focused image. Specifically, the diameter calculation unit 48 calculates the product of the number of pixels in the width direction of the target reinforcing bar in the focused image and the pixel pitch as the width r of the image of the target reinforcing bar on the imaging surface. The diameter calculator 48 assumes that the subject distance is A and the image distance is B.
R = r · A / B (Formula 1)
Based on the above, the diameter R of the target reinforcing bar is calculated. Thereby, the diameter calculation part 48 can calculate the diameter of the main rebar 3 which comprises the structure 2. FIG. In addition, the diameter calculation unit 48 can also calculate the diameter of the distribution reinforcing bar 4 by performing the above processing based on the focused image focused on the distribution reinforcing bar 4. Since the reinforcing bars are usually formed on a cylindrical shape, the focused image may be taken from any angle as long as it is taken from a direction orthogonal to the extending direction of the reinforcing bars.

The interval calculation unit 49 is based on the focus image including a plurality of target rebar images whose difference in subject distance is less than the threshold, and the subject distance A and the image distance B corresponding to the focus image. The interval I is calculated. The interval calculation unit 49 first calculates the interval i of the target reinforcing bar image on the imaging surface based on the interval of the target reinforcing bar image in the focused image. For example, the interval calculation unit 49 calculates the interval on the imaging surface of the images of a plurality of target reinforcing bars in the horizontal axis or vertical axis direction in the focused image as the interval i. Specifically, the diameter calculating unit 48 calculates the product of the number of pixels of the target reinforcing bar interval in the focused image and the pixel pitch as the interval i of the target reinforcing bar image on the imaging surface. The interval calculation unit 49
I = i · A / B (Formula 2)
Based on the above, the interval I of the target reinforcing bars is calculated.

  In addition, when the structure 2 is used for a pillar, the main reinforcing bars 3 are arranged side by side in the horizontal direction. In this case, the arrangement direction of the main reinforcing bars 3 is the horizontal direction. For this reason, when the focused image is captured in the horizontal position, the interval calculation unit 49 calculates the distance of the images on the imaging surface of the plurality of target reinforcing bars on the horizontal axis as the interval i.

  When the structural body 2 is used for a beam, the main reinforcing bars 3 are arranged side by side in a direction orthogonal to the horizontal direction. In this case, the arrangement direction of the main reinforcing bars 3 is a direction orthogonal to the horizontal. For this reason, when the focused image is captured in the horizontal position, the interval calculation unit 49 calculates the distance between the images on the imaging surface of the plurality of target reinforcing bars on the vertical axis as the interval i.

  The number acquisition unit 50 acquires the number of main reinforcing bars 3 included in the structure 2 based on the number of reinforcing bar images included in the focused image. That is, the number acquisition unit 50 acquires the number of reinforcing bars detected as a subject from the focused image as described above.

  The depth difference acquisition unit 51 calculates a depth difference Z to each target reinforcing bar based on the plurality of focused images and the subject distance A and the image distance B corresponding to these focused images. The depth difference is a distance between a plurality of target reinforcing bars in a direction along the optical axis of the imaging lens 21. That is, the depth difference acquisition unit 51 measures the distance from the imaging plane to the target reinforcing bar (first target reinforcing bar) reflected in the focused image and the target reinforcing bar reflected from the imaging plane to the other focused image. The difference between the distance to the (second target reinforcing bar) and the depth difference Z between the first target reinforcing bar and the second target reinforcing bar is calculated.

  For example, as shown in FIG. 3, the distances from the main point P to the target reinforcing bars 3A, 3B, and 3C are set to D1 = A1 + B1, and then the target reinforcing bars 3D and 3E at positions far from the main point P are set. Is D2 = A2 + B2, and the distance from the principal point P to the target reinforcing bars 3F, 3G, and 3H is D3 = A3 + B3. In this case, the depth difference Z1 between the target reinforcing bars 3A, 3B, and 3C and the target reinforcing bars 3D and 3E is Z1 = A1 + B1-A2-B2. The depth difference Z2 between the target reinforcing bars 3D and 3E and the target reinforcing bars 3F, 3G, and 3H is Z2 = A2 + B2-A3-B3.

The bar arrangement information processing unit 52 associates the measured target reinforcing bars with the reinforcing bars on the reinforcing bar arrangement diagram. For example, the reinforcing bar information processing unit 52 can detect the unmeasured main reinforcing bar 3 by associating the target reinforcing bar that has been measured for each reinforcing bar in the reinforcing bar arrangement diagram acquired by the information acquiring unit 47. Further, the bar arrangement information processing unit 52 adds the measurement result of the diameter R for each reinforcing bar in the reinforcing bar arrangement drawing to the bar arrangement information. Further, the bar arrangement information processing unit 52 adds the measurement result of the interval I between the reinforcing bars in the bar arrangement diagram to the bar arrangement information. Further, the bar arrangement information processing unit 52 adds the measurement result of the depth difference Z between the reinforcing bars in the bar arrangement diagram to the bar arrangement information. Further, the bar arrangement information processing unit 52 adds a plurality of focused images to the bar arrangement information as bar arrangement pictures. Thereby, the bar arrangement information processing part 52 can file the bar arrangement information to which all the information is added.
The bar arrangement information processing unit 52 uploads the bar arrangement information to which the measurement result and the bar arrangement photo are added to the server 5. Thereby, the bar arrangement information is managed on the server 5.

  Further, the bar arrangement information processing unit 52 may be configured to generate tag information by recognizing the voice data recorded by the sound collecting unit 19 and add the generated tag information to the bar arrangement information. . In this case, the bar arrangement information processing unit 52 generates, by voice recognition, tag information indicating a construction subject for each construction item, a construction place for each construction subject, a part name such as a column or a beam, and adds the tag information to the arrangement information. be able to.

  Furthermore, the bar arrangement information processing unit 52 may be configured to generate a reinforcing bar arrangement map based on the focused image. For example, the bar arrangement information processing unit 52 may generate the reinforcing bar arrangement diagram by recognizing the interval between the reinforcing bars and the depth difference, the number of reinforcing bars, and the like using the above measurement results.

  Further, the bar arrangement information processing unit 52 generates information corresponding to the design information by using the tag information generated by the voice recognition, the measurement result acquired by the measurement, and the reinforcing bar arrangement map generated from the measurement result. Can do. Thereby, the bar arrangement information processing part 52 can replenish various types of information even when the design information is not acquired from the server 5 or when there is an omission in the design information.

  Further, the bar arrangement information processing unit 52 is configured to generate a construction site map (plan view) and extract a site by performing space recognition based on an image captured by the imaging unit. Good.

  The inclination detection unit 53 detects the inclination of the optical axis of the imaging lens 21 of the imaging unit. The inclination detection unit 53 detects the inclination of the imaging unit of the yaw axis and roll axis using an acceleration sensor or the like. Further, the inclination detection unit 53 may be configured to detect the inclination of the optical axis of the imaging lens 21 based on the image. For example, the inclination detection unit 53 determines the optical axis of the imaging lens 21 based on the direction of the target reinforcing bars detected as the subject in the focused image, the uniformity of the interval between the target reinforcing bars, the uniformity of the width of the target reinforcing bar image, and the like. Detect the slope of.

  For example, when the orientation of the target reinforcing bar detected as a subject in the focused image and the horizontal axis or the vertical axis form an angle that is equal to or greater than a preset angle, the tilt detection unit 53 determines that the optical axis of the imaging lens 21 is the roll axis. It detects that it was leaning. That is, the inclination detection unit 53 detects that the optical axis of the imaging lens 21 is not kept horizontal during imaging.

  For example, when the interval between the target reinforcing bars detected as the subject in the focused image is not uniform, the inclination detection unit 53 detects that the optical axis of the imaging lens 21 is inclined with respect to the yaw axis. In other words, the tilt detection unit 53 detects that the optical axis of the imaging lens 21 is not directed in a direction orthogonal to the arrangement direction of the target reinforcing bars at the time of imaging.

  In addition, the inclination detection part 53 may be provided with the geomagnetic sensor. In this case, the inclination detection unit 53 may be configured to detect the inclination of the yaw axis by detecting the direction of the optical axis of the imaging lens 21 using a geomagnetic sensor and comparing it with design information.

  Further, for example, when the width of the image of the target reinforcing bar detected as the subject in the focused image is nonuniform, the inclination detection unit 53 detects that the optical axis of the imaging lens 21 is inclined with respect to the pitch axis. That is, the tilt detection unit 53 detects that the optical axis of the imaging lens 21 is tilted up and down during imaging.

  The warning unit 54 outputs various warnings when the rebar measuring unit 46 acquires the focused image. For example, the warning unit 54 outputs a warning by displaying an alert on the display unit 16. Moreover, when the imaging device 1 is provided with a speaker etc., you may output a warning by audio | voice output.

  The warning unit 54 outputs a warning when it is detected that the optical axis of the imaging lens 21 is tilted when the focused image is acquired. For example, when it is detected that the optical axis of the imaging lens 21 is tilted with respect to the yaw axis, the warning unit 54 outputs a display for prompting correction of the tilt of the yaw axis as an alert display. Specifically, the warning unit 54 outputs a display that prompts the optical axis of the imaging lens 21 of the imaging device 1 to be orthogonal to the arrangement direction of the reinforcing bars as an alert display.

  Further, for example, when it is detected that the optical axis of the imaging lens 21 is tilted with respect to the roll axis, the warning unit 54 outputs a display that prompts correction of the tilt of the roll axis as an alert display. Specifically, the warning unit 54 outputs, as an alert display, a display that prompts the user to keep the casing of the imaging device 1 horizontal.

  Further, for example, when it is detected that the optical axis of the imaging lens 21 is tilted with respect to the pitch axis, the warning unit 54 outputs a display for prompting correction of the tilt of the pitch axis as an alert display. That is, the warning unit 54 outputs, as an alert display, a display that prompts correction of the tilt of the optical axis of the imaging lens 21 in the vertical direction.

  Further, the warning unit 54 indicates that there is an undetected reinforcing bar when the number of reinforcing bars indicated by the reinforcing bar arrangement diagram in the bar arrangement information does not match the number of reinforcing bars detected as a subject from the focused image. An alert that outputs a warning is output.

  For example, when the number of reinforcing bars acquired by the number acquisition unit 50 is less than the number of reinforcing bars indicated by the bar arrangement information, the warning unit 54 may reflect the reinforcing bars and the reinforcing bars. Therefore, a warning that prompts the user to move the imaging unit in a direction parallel to the arrangement direction of the plurality of target reinforcing bars is output.

  In addition, for example, when the number of reinforcing bars acquired by the number acquisition unit 50 is two or more than the number of reinforcing bars indicated by the bar arrangement information, the warning unit 54 may not have all the reinforcing bars within the imaging range. Therefore, a warning that prompts the user to move the imaging unit away from the reinforcing bar is output.

  Further, the warning unit 54 determines that measurement of the diameter of the target reinforcing bar is impossible when the width of the image of the target reinforcing bar in the focused image is less than the preset width, and the imaging unit is set to the reinforcing bar. A warning that prompts the user to approach is output. In general, the reinforcing bars are formed with a diameter of 7 mm or more. In general, the types of reinforcing bars are developed so that the diameter increases in increments of 3 mm. For this reason, in the imaging device 1, the imaging element 12, the imaging lens 21, and the like are configured on the assumption that a difference of 3 mm is detected with sufficient accuracy.

  FIG. 4 shows an example of a reinforcing bar measurement application screen. The main control unit 20 executes a reinforcing bar measurement application according to a predetermined operation. For example, the main control unit 20 executes the reinforcing bar measurement application based on an operation of the cross button 15c, an operation of a mode dial (not shown), or an external instruction via the communication unit 18.

  The main control unit 20 can display various screens shown in FIG. 4 on the display unit 16 based on the design information. First, the main control unit 20 causes the display unit 16 to display a screen 101 showing a list of construction sites indicated by the design information in a state where the screen 101 can be selected by operating the operation unit 15. When a construction site is selected on the screen 101, the main control unit 20 causes the display unit 16 to display a screen 102 showing a list of parts corresponding to the selected construction site in a state that can be selected by the operation of the operation unit 15. . For example, as shown in FIG. 4, the main control unit 20 displays a map of the construction site, and further displays symbols that can be selected by operating the operation unit 15 at positions corresponding to the respective parts on the map. When the symbol is selected, the main control unit 20 determines that the part corresponding to the selected symbol has been selected.

  When a part is selected on the screen 102, the main control unit 20 reads the bar arrangement information corresponding to the selected part. The main control unit 20 causes the display unit 16 to display the reinforcing bar measurement screen 103 shown in FIG. 5 using the reinforcing bar arrangement diagram in the read bar arrangement information.

  The reinforcing bar measurement screen 103 includes a display frame 104 for displaying a through image, a display frame 105 for displaying a reinforcing bar arrangement diagram, a display frame 106 for displaying a measurement result, and a measurement start button 107. The main control unit 20 displays the through image sequentially on the display frame 104 and displays the reinforcing bar arrangement diagram in the bar arrangement information on the display frame 105. Further, the main control unit 20 causes the display frame 105 to display an indicator 108 indicating a recommended imaging position.

  When the measurement start button 107 is selected on the reinforcing bar measurement screen 103 or when the release button 15b is fully pressed, the main control unit 20 starts the reinforcing bar measurement process using the reinforcing bar measurement unit 46. The main control unit 20 causes the display unit 16 to display the measurement result screen 109 shown in FIG. 6 using the result of the reinforcing bar measurement process.

  The measurement result screen 109 includes a display frame 110 for displaying a focused image, a display frame 111 for displaying a reinforcing bar arrangement diagram, and a display frame 106 for displaying a measurement result. The main control unit 20 causes the display frame 110 to display one or more of the plurality of focused images obtained by the reinforcing bar measurement process, and causes the display frame 111 to display the reinforcing bar arrangement diagram in the arrangement information. . In addition, the main control unit 20 displays the diameter, interval, and depth difference of the reinforcing bars, which are measurement results, on the display frame 106. Further, the main control unit 20 causes the display frame 111 to display an indicator 112 indicating whether or not the measurement is completed.

  The main control unit 20 may be configured to switch the focused image every time the display frame 110 is selected. In addition, the main control unit 20 may display the diameter, interval, and depth difference of the reinforcing bars, which are measurement results, in association with the reinforcing bars in the reinforcing bar arrangement diagram of the display frame 111 and the spaces between the reinforcing bars.

  7 to 9 show examples of the operation of the imaging apparatus 1. The main control unit 20 determines whether the imaging device 1 is operating in the reinforcing bar measurement mode (step S11). When the main control unit 20 determines that the imaging device 1 is not operating in the reinforcing bar measurement mode (NO in step S11), the main control unit 20 performs processing in the normal imaging mode (step S12).

  When it is determined that the imaging device 1 is operating in the reinforcing bar measurement mode (step S11, YES), the main control unit 20 causes the display unit 16 to display a screen showing a list of construction subjects (step S13). When the construction subject is selected, the main control unit 20 causes the display unit 16 to select a screen 101 showing a list of construction places indicated by the design information corresponding to the selected construction subject, by operating the operation unit 15. It is displayed (step S14).

  When a construction site is selected on the screen 101, the main control unit 20 causes the display unit 16 to display a screen 102 showing a list of parts corresponding to the selected construction site in a state that can be selected by the operation of the operation unit 15. (Step S15).

  The main control unit 20 selects one of the plurality of parts displayed on the screen 102 according to the operation input (step S16). When a part is selected on the screen 102, the main control unit 20 reads the bar arrangement information corresponding to the selected part (step S17). The main control unit 20 displays the reinforcing bar measurement screen 103 shown in FIG. 5 on the display unit 16 by using the reinforcing bar arrangement diagram in the read reinforcing bar information (step S18).

  The main control unit 20 executes a focused image acquisition process in response to an operation during display of the reinforcing bar measurement screen 103 (step S19).

  FIG. 8 shows an example of a focused image acquisition process by the main control unit 20. First, the main control unit 20 determines whether or not an operation for instructing imaging is input while the reinforcing bar measurement screen 103 is displayed (step S31).

  When it is determined that an operation for instructing imaging has been input, the main control unit 20 performs a focused image acquisition process of acquiring a focused image in a state of being focused on the plurality of main reinforcing bars 3 constituting the structure 2. First, the main control unit 20 acquires a through image, detects a rebar that appears in the through image as a subject, and identifies a target rebar that is a rebar to be focused from among the detected main rebars 3 ( Step S32). For example, the reinforcing bar measuring unit 46 first identifies the main reinforcing bar 3 having the longest subject distance as the target reinforcing bar.

  The main control unit 20 acquires a focused image in a state where the target reinforcing bar specified as the specified focusing target is focused (step S33). At this time, the main control unit 20 acquires the image distance and the subject distance according to the state of the imaging lens 21 at the time of focusing, and adds it to the focused image.

  The main control unit 20 performs various determinations based on the captured focused image. First, the main control unit 20 determines whether or not the optical axis of the imaging lens 21 is kept horizontal when the focused image is captured (step S34). When it is determined that the optical axis of the imaging lens 21 is not kept horizontal (NO in step S34), the main control unit 20 outputs a display prompting to keep the optical axis of the imaging lens 21 horizontal as an alert display. (Step S35), the process proceeds to Step S32. The main control unit 20 may be configured to move to the process of step S32 when it is detected based on a through image that the optical axis of the imaging lens 21 is held horizontally after outputting the alert.

  When it is determined that the optical axis of the imaging lens 21 is kept horizontal (YES in step S34), the main control unit 20 directs the optical axis of the imaging lens 21 in a direction orthogonal to the arrangement direction of the target reinforcing bars. It is determined whether it has been (step S36). When it is determined that the optical axis of the imaging lens 21 is not directed in the direction orthogonal to the arrangement direction of the target reinforcing bars (NO in step S36), the main control unit 20 performs the imaging lens 21 with respect to the arrangement direction of the reinforcing bars. A display prompting to direct the optical axis in the orthogonal direction is output as an alert display (step S37), and the process proceeds to step S32. When the main control unit 20 detects based on the through image that the optical axis of the imaging lens 21 is directed in a direction orthogonal to the arrangement direction of the reinforcing bars after outputting the alert, the main control unit 20 proceeds to the process of step S32. It may be configured to move.

  When it is determined that the optical axis of the imaging lens 21 is oriented in a direction orthogonal to the arrangement direction of the target reinforcing bars (step S36, YES), the main control unit 20 has the optical axis of the imaging lens 21 in the vertical direction. It is determined whether or not it is tilted (step S38). When it is determined that the optical axis of the imaging lens 21 is tilted up and down (step S38, NO), the main control unit 20 displays an alert for prompting correction of the tilt of the optical axis of the imaging lens 21 in the vertical direction. (Step S39), and the process proceeds to step S32. The main control unit 20 is configured to move to the process of step S32 when detecting that the tilt of the optical axis of the imaging lens 21 in the vertical direction has been canceled after outputting the alert based on the through image. Also good.

  When it is determined that the optical axis of the imaging lens 21 is not inclined in the vertical direction (step S38, YES), the main control unit 20 determines whether the diameter of the target reinforcing bar can be calculated based on the focused image (step). S40). For example, the main control unit 20 determines that it is impossible to calculate the diameter of the target reinforcing bar based on the focused image when the width of the target reinforcing bar image in the focused image is less than a preset width. To do.

  When it is determined that it is impossible to calculate the diameter of the target reinforcing bar based on the focused image (NO in step S40), the main control unit 20 outputs a warning that prompts the imaging unit to approach the target reinforcing bar. (Step S41), the process proceeds to step S32. The main control unit 20 may be configured to move to the process of step S32 when detecting that the width of the image of the target reinforcing bar in the through image is equal to or larger than a preset width after outputting the alert. .

  When it is determined that the diameter of the target reinforcing bar can be calculated based on the focused image (step S40, YES), the main control unit 20 detects all the reinforcing bars indicated by the reinforcing bar layout diagram in the bar arrangement information as the target reinforcing bars. It is determined whether or not it is possible (step S42). That is, the main control unit 20 determines whether or not the number of reinforcing bars indicated by the reinforcing bar arrangement diagram in the bar arrangement information matches the number of reinforcing bars detected as a subject from the focused image. When it is determined that not all the reinforcing bars are detectable (NO in step S42), the main control unit 20 outputs a warning for urging the imaging unit to move with respect to the structure 2 (step S43), and step S32 Move on to processing. For example, the main control unit 20 moves the imaging unit in a direction parallel to the arrangement direction of the plurality of target reinforcing bars when the number of reinforcing bars detected as the subject is less than the number of reinforcing bars indicated by the bar arrangement information. A warning prompting you to output is output. Further, for example, when the number of reinforcing bars detected as a subject is not two or more than the number of reinforcing bars indicated by the bar arrangement information, the warning unit 54 outputs a warning that prompts the imaging unit to move away from the reinforcing bars. To do. The main control unit 20 may be configured to move to the process of step S32 when it is detected based on the through image that all the reinforcing bars can be detected after outputting the alert.

  When it is determined that all the reinforcing bars can be detected (step S42, YES), the main control unit 20 determines whether or not an in-focus image has been acquired with all the reinforcing bars being in focus (step S44). If there is a reinforcing bar that is not the focus target (step S44, NO), the main control unit 20 moves to step S32, switches the focus target to a reinforcing bar with a shorter subject distance, and acquires a focused image again. The main control unit 20 acquires a plurality of focused images having different depths in order while shifting the focus position in a state where no alert is output. Further, every time the main control unit 20 acquires a focused image, the main control unit 20 acquires the subject distance, the image distance, and the focal length based on the focus position of the imaging lens 21, and acquires the acquired subject distance, the image distance, and the focal length. Is associated with the focused image. Note that the main control unit 20 may be configured to capture focused images in order from the reinforcing bars with the short subject distance, instead of capturing the focused images in order from the reinforcing bars with the long subject distance.

  If it is determined that the focused image has been acquired with all the reinforcing bars in focus (step S44, YES), the main control unit 20 proceeds to the process of step S20 in FIG.

  The main control unit 20 measures the diameter of the target reinforcing bars, the interval between the plurality of target reinforcing bars, the depth difference between the plurality of target reinforcing bars, and the number of target reinforcing bars using the focused image obtained in step S19 ( Step S20).

  FIG. 9 shows an example of measurement processing by the main control unit 20. First, the main control unit 20 selects and reads out one in-focus image among a plurality of in-focus images acquired by the in-focus image acquisition process (step S51).

  The main control unit 20 acquires the subject distance at the time of capturing the focused image (step S52). Further, the main control unit 20 acquires an image distance at the time of capturing a focused image (step S53).

  The main control unit 20 calculates the width of the target reinforcing bar image on the imaging surface based on the width of the target reinforcing bar image in the focused image (step S54). The main control unit 20 calculates the diameter of the target reinforcing bar based on the subject distance and the image distance corresponding to the focused image and the width of the target reinforcing bar image on the imaging surface (step S55).

  The main control unit 20 calculates the interval between the images of the target reinforcing bars on the imaging surface based on the interval between the images of the target reinforcing bars in the focused image (step S56). The main control unit 20 calculates an actual interval between the plurality of target reinforcing bars based on the subject distance and the image distance corresponding to the focused image and the interval between the images of the plurality of target reinforcing bars on the imaging surface. (Step S57).

  The main control unit 20 acquires the number of target reinforcing bars by detecting the reinforcing bar image included in the focused image as a subject (step S58).

  The main control unit 20 determines whether or not processing has been performed for all in-focus images (step S59). That is, the main control unit 20 determines whether or not the processing of steps S51 to S58 has been performed based on all the focused images obtained in step S19. If it is determined that the processing has not been performed for all the focused images (step S59, NO), the main control unit 20 proceeds to the process of step S51 and newly reads an unprocessed focused image, and the steps S51 to S51 are performed. The process of S58 is performed.

  Further, when it is determined that the processing has been performed for all the focused images (step S59, YES), the main control unit 20 calculates the depth difference between the respective target reinforcing bars based on the distance to each target reinforcing bar. (Step S60), the process proceeds to step S21 shown in FIG. That is, the main control unit 20 determines the difference between the distance from the imaging surface to a certain target reinforcing bar and the distance from the imaging surface to a different target reinforcing bar in a direction parallel to the optical axis of the imaging lens 21 between these target reinforcing bars. It is calculated as a depth difference that is an interval. The main control unit 20 calculates the distance in the direction parallel to the optical axis of the imaging lens 21 between the plurality of target reinforcing bars by calculating the depth difference from the other target reinforcing bars for each target reinforcing bar.

  The main control unit 20 adds the plurality of focused images obtained in step S19 and the measurement result obtained in step S20 to the arrangement information (step S21). As a result, the main control unit 20 generates bar arrangement information including the measurement results of the plurality of reinforcing bars constituting the imaged structure 2, the bar arrangement photograph including the plurality of focused images, and the bar arrangement diagram. be able to. The main control unit 20 uploads the generated bar arrangement information to the server 5 via the communication unit 18. The main control unit 20 may be configured to record the generated bar arrangement information on the recording medium M.

  The main control unit 20 refers to the design information, and determines whether or not bar arrangement information has been generated by the above processing for all the parts included in the construction site selected in step S14 (step S22). If it is determined that there is a part that has not been processed yet (step S22, NO), the main control unit 20 returns to step S515 and causes the display unit 16 to display a screen 102 that shows a list of parts corresponding to the construction site.

  If it is determined that the bar arrangement information has been generated for all parts (step S22, YES), the main control unit 20 determines whether to turn off the power (step S23). That is, the main control unit 20 determines whether, for example, a power button or the like of the operation unit 15 is operated and an instruction to turn off the power is input by the operation unit 15. When it is determined that the power is to be turned off (YES in step S23), the main control unit 20 turns off the power of the imaging device 1 and ends the process. If it is determined that the power is not turned off (NO at step S23), the main control unit 20 returns to the process at step S11.

  According to the imaging device 1 configured as described above, a focused image is acquired by focusing on a target reinforcing bar that is a focusing target, and a subject distance and an image distance at the time of capturing the focused image are acquired. Then, based on the image width of the target reinforcing bar, the subject distance, and the image distance in the focused image, the diameter of the target reinforcing bar and the interval between the plurality of target reinforcing bars are calculated. This saves the trouble of copying the measurement standard together with the reinforcing bar to be measured into the image as before, and calculating the actual width and distance of the reinforcing bar based on the width and interval of the reinforcing bar in this image and the measurement standard. can do.

  Furthermore, the imaging device 1 acquires a plurality of focused images while switching the target reinforcing bars. The imaging device 1 calculates the interval in the direction parallel to the optical axis of the imaging lens 21 between the target reinforcing bars captured in each focused image, based on the subject distance and the image distance at the time of capturing a plurality of focused images. Thereby, the imaging device 1 can calculate the interval in the depth direction between the plurality of reinforcing bars constituting the structure 2. Thereby, it is not necessary to image the structure 2 from a plurality of different angles.

  As a result, it is possible to provide an imaging apparatus that can measure the measurement target more easily.

  In the above-described embodiment, the main control unit 20 has been described as having a configuration in which a target rebar that is a focusing target is sequentially switched to obtain a plurality of focused images, but is not limited to this configuration. The main control unit 20 may be configured to perform continuous shooting while driving the focus lens and extract an image focused on the reinforcing bar as a focused image. That is, the main control unit 20 may be configured to capture a moving image while driving the focus lens, and extract a frame focused on the reinforcing bar as a focused image.

  Moreover, although said main control part 20 demonstrated that it was the structure which outputs an alert, when the optical axis of the imaging lens 21 is not orient | assigned to the direction orthogonal to the sequence direction of object reinforcement in said embodiment. The configuration is not limited to this. The main control unit 20 may be configured to perform measurement processing based on a focused image captured in a state where the optical axis of the imaging lens 21 is not directed in a direction orthogonal to the arrangement direction of the target reinforcing bars. . In this case, the main control unit 20 calculates an interval in a direction orthogonal to the optical axis of the imaging lens 21 with another reinforcing bar not focused on the target reinforcing bar. Further, the main control unit 20 calculates a depth difference in a direction parallel to the optical axis of the imaging lens 21 between the target reinforcing bars in each focused image based on the plurality of focused images. The main control unit 20 can calculate the interval between the main reinforcing bars 3 based on the calculated interval and the depth difference.

  Further, in the above embodiment, the warning unit 54 determines that measurement of the diameter of the target reinforcing bar is impossible when the width of the target reinforcing bar image in the focused image is less than a preset width, and the imaging is performed. Although it has been described that a warning for prompting the part to approach the reinforcing bar is output, the present invention is not limited to this configuration. The reinforcing bar measurement unit 46 may be configured to control the imaging lens 21 so that the focal length is changed to the telephoto side when the width of the image of the target reinforcing bar in the focused image is less than a preset width. For example, the reinforcing bar measurement unit 46 changes the focal length of the imaging lens 21 within a range where the reinforcing bar cannot be seen from the through image by changing the focal length to the telephoto side while recognizing the position of the reinforcing bar in the through image.

  In the above embodiment, the warning unit 54 detects the reinforcing bars that are not detected when the number of reinforcing bars indicated by the reinforcing bar arrangement diagram in the bar arrangement information does not match the number of reinforcing bars detected as a subject from the focused image. Although it has been described that an alert that outputs a warning indicating that exists is output, the present invention is not limited to this configuration. The warning unit 54 warns that there is an undetected reinforcing bar when the preset number or the number set by operation input does not match the number of reinforcing bars detected as a subject from the focused image. May be configured to output an alert. According to this configuration, even when the reinforcing bar arrangement map is not acquired, the warning unit 54 can determine whether or not all the main reinforcing bars 3 constituting the structure 2 are reflected in the focused image. it can.

  Moreover, although said embodiment demonstrated that the imaging device 1 was the structure provided with the display part 16, it is not limited to this structure. The imaging device 1 may be configured to output and display a screen on an external information processing terminal including a display unit such as a tablet PC via the communication unit 18. Further, the imaging device 1 may be configured to receive various operation signals via the communication unit 18.

  For example, the imaging device 1 may be configured as a lens type camera that does not have the display unit 16 and can display a through image and input an operation by an external information processing terminal including the display unit.

  Furthermore, the main control unit 20 may not be provided with the reinforcing bar measurement unit 46, but the information processing terminal may store and hold a reinforcing bar measurement application corresponding to the reinforcing bar measurement unit 46 in a recording medium. In this case, the imaging apparatus 1 transmits information such as the focused image, the subject distance, and the image distance to the information processing terminal. The information processing terminal functions as an image processing device that measures a reinforcing bar by performing a reinforcing bar measurement process using the focused image, the subject distance, and the image distance received from the imaging device 1.

  Furthermore, the main control unit 20 may not be provided with the reinforcing bar measurement unit 46, but the server 5 may be configured so that the imaging apparatus 1 stores and holds a reinforcing bar measurement application corresponding to the reinforcing bar measurement unit 46. In this case, the imaging apparatus 1 transmits information such as the focused image, the subject distance, and the image distance to the server 5. The server 5 functions as an image processing device that measures the reinforcing bars by performing the reinforcing bar measurement processing using the focused image, the subject distance, and the image distance received from the imaging device 1.

  Further, the above reinforcing bar measurement application may be stored in the recording medium M. The imaging apparatus 1 may be configured to read and install a reinforcing bar measurement application from the recording medium M. The imaging apparatus 1 may be configured to acquire and install a reinforcing bar measurement application from the server 5 via the communication unit 18. That is, the reinforcing bar measurement application may be stored in any storage medium.

  As described above, various configurations such as the imaging unit, the display unit, and the reinforcing bar measurement processing unit of the imaging device 1 may be realized as a system by being distributed and mounted on a plurality of communicable devices. . As described above, the various configurations of the imaging apparatus 1 are distributed and mounted on a plurality of apparatuses, whereby the imaging apparatus can be simplified, reduced in size, and reduced in weight. Thereby, it becomes possible to mount the imaging device 1 having an imaging unit on an unmanned flying device such as a drone. As a result, it becomes easy to measure a reinforcing bar in a place where it is difficult for a person to confirm. This also makes it possible to deal with disasters and accidents. Further, this makes it difficult to mount the imaging device 1 having an imaging unit on a remotely controllable vehicle or robot so that it is difficult to hold the hand or measure it with a caliper or a ruler by visual observation. Also, it becomes easy to perform the measurement.

  In the above-described embodiment, the imaging apparatus 1 is described as an apparatus that measures a reinforcing bar used for a reinforced concrete column or beam, but is not limited to this configuration. An object to be measured by the imaging apparatus 1 may be any object. For example, a frame other than a reinforcing bar may be used for a reinforced concrete column or beam. The imaging apparatus 1 can calculate the diameter, interval, depth difference, and the like of the frame by performing the same process as the above-described reinforcing bar measurement process even if the frame is a frame other than a reinforcing bar. Furthermore, the object to be measured by the imaging apparatus 1 is not limited to a frame such as a reinforced concrete column or beam. The imaging device 1 can be applied when measuring the width and thickness of elements that affect the safety of structures and facilities. For example, the imaging device 1 simply has a column size, a beam size, a frame size, a wall thickness, a flying buttress size, a bridge pier size, a bridge girder size, a track thickness and spacing, or a sleeper. Anything such as thickness may be measured. That is, the imaging apparatus 1 can perform measurement by the same process as the above-described reinforcing bar measurement process as long as elements that affect the safety of structures and facilities are regularly arranged.

  Moreover, although said embodiment demonstrated that the imaging device 1 was the structure provided with the lens 10, it is not limited to this structure. The imaging apparatus 1 may be configured to include a mount on which the lens 10 can be attached instead of the lens 10.

  It should be noted that the functions described in the above embodiments are not limited to being configured using hardware, but can be realized by causing a computer to read a program describing each function using software. Each function may be configured by appropriately selecting either software or hardware.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Imaging device, 5 ... Server, 10 ... Lens, 11 ... Shutter unit, 12 ... Image sensor, 13 ... Signal processing part, 14 ... Image processing part, 15 ... Operation part, 16 ... Display part, 17 ... Memory I / F, 18 ... Communication unit, 19 ... Sound collection unit, 20 ... Main control unit, 21 ... Imaging lens, 22 ... Aperture mechanism, 23 ... Lens control unit, 31 ... Display panel, 32 ... Electronic viewfinder, 33 ... Eye sensor, DESCRIPTION OF SYMBOLS 41 ... Operation determination part, 42 ... Imaging control part, 43 ... Focus control part, 44 ... Recording control part, 45 ... Display control part, 46 ... Rebar measurement part, 47 ... Information acquisition part, 48 ... Diameter calculation part, 49 ... spacing calculation unit, 50 ... number acquisition unit, 51 ... depth difference acquisition unit, 52 ... bar arrangement information processing unit, 53 ... inclination detection unit, 54 ... warning unit.

Claims (16)

A focus control unit that controls the imaging optical system so as to focus on the target rebar that is the rebar to be focused;
An imaging unit that captures an image in a focused state with the target rebar, and obtains a focused image;
An information acquisition unit that acquires a subject distance that is a distance to the target reinforcing bar and a focal length of the imaging optical system;
A diameter calculating unit that calculates the diameter of the target reinforcing bar based on the subject distance, the focal length, and the width of the target reinforcing bar image in the focused image;
An imaging apparatus comprising: The focused image includes an image of a plurality of target reinforcing bars including the target reinforcing bars,
2. The imaging according to claim 1, wherein the diameter calculation unit calculates the diameter of each target reinforcing bar based on the subject distance, the focal distance, and a width of the image of each target reinforcing bar in the focused image. apparatus. The focused image includes a plurality of reinforcing bar images including the target reinforcing bar,
The interval calculation unit according to claim 1, further comprising: an interval calculation unit configured to calculate an interval between the plurality of reinforcing bars based on the subject distance, the focal length, and an interval between the images of the plurality of reinforcing bars in the focused image. Imaging device.   The imaging apparatus according to claim 3, further comprising a number acquisition unit that acquires the number of reinforcing bars based on the number of the reinforcing bar images included in the focused image. The imaging unit acquires a plurality of focused images by switching the rebar selected as the target rebar from a plurality of rebars by the focus control unit,
The diameter calculation unit calculates the diameter of each target reinforcing bar based on each focused image,
The imaging apparatus according to claim 3, further comprising a depth difference acquisition unit that acquires a depth difference to each of the target reinforcing bars based on a subject distance to each of the target reinforcing bars acquired by the information acquisition unit. The information acquisition unit acquires reinforcing bar information indicating the number and arrangement of reinforcing bars in a structure in which a plurality of reinforcing bars are combined,
The bar arrangement information processing part which adds the diameter of the object reinforcing bar, the interval of the plurality of reinforcing bars, the depth difference to each object reinforcing bar, and each focused image to the arrangement information. The imaging device described.   A warning that determines whether or not the number of reinforcing bars acquired by the number acquisition unit matches the number of reinforcing bars indicated by the bar arrangement information, and outputs a warning indicating that an unmeasured reinforcing bar exists if they do not match The imaging device according to claim 4, further comprising a unit.   When the number of reinforcing bars acquired by the number acquisition unit is less than the number of reinforcing bars indicated by the bar arrangement information, the warning unit moves the imaging unit in a direction parallel to the arrangement direction of the plurality of reinforcing bars. The imaging apparatus according to claim 7, wherein a warning that prompts movement is output.   When the number of reinforcing bars acquired by the number acquisition unit is not two or more than the number of reinforcing bars indicated by the bar arrangement information, the warning unit issues a warning that prompts the imaging unit to move away from the reinforcing bars. The imaging device according to claim 7 which outputs.   When the width of the image of the target reinforcing bar in the focused image is less than a preset width, it is determined that the diameter of the target reinforcing bar cannot be measured, and the imaging unit is brought close to the reinforcing bar. The imaging apparatus according to claim 1, further comprising a warning unit that outputs a warning for prompting the user. The imaging optical system is an optical system capable of changing a focal length,
When the width of the image of the target reinforcing bar in the focused image is less than a preset width, it is determined that measurement of the diameter of the target reinforcing bar is impossible, and the focal length of the imaging optical system is set to the telephoto side. The imaging apparatus according to claim 1, further comprising a focal length control unit to be changed. An inclination detection unit for detecting an inclination of the imaging unit;
A warning unit that outputs a warning indicating that the imaging unit is tilted when the tilt detection unit detects that the imaging unit is tilted;
The imaging apparatus according to claim 1, further comprising: An audio acquisition unit for acquiring audio;
A tag generator for recognizing the voice and generating a tag;
Further comprising
The imaging apparatus according to claim 6, wherein the bar arrangement information processing unit adds the tag to the bar arrangement information. Information acquisition for acquiring a focused image captured in a state of focusing on a target reinforcing bar that is a focusing target, a subject distance that is a distance to the target reinforcing bar, and a focal length of the imaging optical system And
A diameter calculating unit that calculates the diameter of the target reinforcing bar based on the subject distance, the focal length, and the width of the target reinforcing bar image in the focused image;
An image processing apparatus comprising: The imaging optical system is controlled so as to focus on the target rebar that is the rebar to be focused, and an image is acquired in a state in which the target rebar is in focus, and a focused image is obtained. The focal length of the imaging optical system,
Calculating the diameter of the target reinforcing bar based on the subject distance, the focal length, and the width of the target reinforcing bar image in the focused image;
Control method of imaging apparatus. An image processing program executed by a computer, wherein the image processing program includes an in-focus image captured in a state where the computer is focused on a target rebar that is a rebar to be focused on, and the target rebar. An information acquisition unit that acquires a subject distance, which is a distance, and a focal length of the imaging optical system;
A diameter calculating unit that calculates the diameter of the target reinforcing bar based on the subject distance, the focal length, and the width of the target reinforcing bar image in the focused image;
An image processing program to be operated.