JP4002256B2 - Seal verification apparatus and method - Google Patents

Description

  The present invention relates to a seal verification method, and in particular, when visual seal verification is performed on a display device such as a CRT, the essential difference between the two imprints is not affected by vermilion adhesion or uneven stamping, The present invention relates to a seal stamp verification apparatus and method which can be accurately discriminated from a seal impression pattern.

  In the conventional seal stamp collation method, as disclosed in Patent Document 1, each of the registered seal stamp and the collated seal stamp is cut into two parts, and the seals obtained by synthesizing different parts are displayed. There is a method (hereinafter referred to as a continuity verification method by cutting and combining) of determining whether or not a registered seal stamp and a collated seal stamp coincide with each other based on the continuity of the combined seal. This will be described with reference to FIG. 3 (a) is a registered seal stamp and (b) is a collated seal stamp, the registered seal stamp and the collated stamp stamp are respectively cut by the line indicated by the solid line L1 in (c) and then the left side of the registered seal stamp is collated. (D) is displayed by combining the right side of the seal. In FIG. 3, the collation is determined based on the continuity at the cutting position. In (d), there are discontinuous parts in the letters “5” and “Buro”. The broken line L2 is added for explanation in order to make the cutting position easy to understand, and is not actually displayed.

In addition, as disclosed in Patent Document 2, the registered seal and the verified seal are displayed alternately at the same position in a time-periodic manner so that different portions of the seal can be seen to flicker. There is a method of discrimination (hereinafter referred to as an alternate display method).
Further, as disclosed in Patent Document 3, the registered seal stamp and the collated seal stamp are displayed in different colors, and the display colors of the overlapping portions of both seals are displayed differently, thereby displaying the registered seal stamp and the collated seal stamp. There is a method of collating and discriminating on the basis of the display in which the matching part and the non-matching part have different colors (hereinafter referred to as a matching / mismatching color display method).
Japanese Patent Publication No. 63-14389 JP-A-4-359383 Japanese Patent Publication 64-64505 JP 54-149430 A

  First, in the configuration in “Continuity verification method by cutting synthesis” disclosed in Patent Document 1, boundary coordinate information must be stored in the cutting coordinate table for each angle of the cutting line when cutting obliquely. There is a problem that if the angle to be stored is increased, the amount of storage is greatly increased, and there is a problem that oblique cutting at an angle that is not stored cannot be performed. Other than oblique cutting, for example, cutting into an “L” -shaped mold Even in this case, there is a similar problem that the vertical coordinate and the angle must be stored in the cutting coordinate table. When the registered seal and the stamp to be verified are similar (as in (a) and (b) in Fig. 3), the continuity verification method by cutting composition focuses only on the continuity of the cutting position. Therefore, even if it is continuous at the cutting position, there is a problem that it is not possible to determine whether the imprint on the same side that has been cut is the same or not by displaying only the cutting position. If it is not applied, discontinuity cannot be found, and the operator has to perform an operation of moving the cutting position as appropriate.

  Secondly, in the collation determination by the “alternate display method” disclosed in Patent Document 2, while the registered seal stamp and the collated seal stamp are alternately displayed, the overall matching of the seal impression is seen, It is performed to check the degree of agreement. Since the switching cycle of the alternate display suitable for viewing the whole and the local coincidence is different, there is a problem that the operator must change the switching cycle of the alternate display every time the whole and the local are viewed.

  Third, the “coincidence / inconsistency color-coded display method” disclosed in Patent Document 3 has the following problems. Normally, when the image of a collated seal stamp input from a scanner or the like is a multi-grayscale gray scale, it is binarized and converted into a black and white binary image and collated with a registered seal stamp. The black and white image after binarization changes greatly depending on the threshold value to be performed, and the influence is particularly remarkable in the coincidence / inconsistency color classification display method. Therefore, a better binarization threshold value must be set. However, it is difficult to set an optimal binarization threshold value due to the density of imprints and unevenness of density.

  In view of the above, the present invention firstly relates to a “continuity verification method by cutting synthesis”, a seal stamp verification apparatus capable of reducing the storage amount of a cutting pattern and arbitrarily moving and rotating, and a registered stamp and a stamped stamp. It is an object of the present invention to provide a seal collation apparatus capable of simultaneously verifying the continuity of the cut composite surface and the symmetry of the cut composite surface. Secondly, regarding an “alternate display method”, to provide an imprint verification method in which a registered imprint and a target imprint to be displayed are enlarged or non-enlarged according to the purpose of collation, and the alternate display switching time is changed in conjunction with the display method. With the goal. A third object of the present invention is to provide a seal collation method for continuously changing a threshold value when binarizing a multi-value gradation image with respect to the “coincidence / inconsistency color classification display method”.

In order to solve the problem, the seal collation apparatus and method of the present invention adopt the following configuration.
<Configuration 1>
Registered seal stamp storing means for storing the seal stamp of the registered seal stamp, collated seal stamp storing means for storing the seal stamp of the collated seal stamp, and an instruction for enlarging or not displaying the seal stamp of the registered seal stamp and the seal stamp of the collated seal stamp and enlarged display instruction means for outputting the magnified display information representing an enlarged display switching signal and the non-enlarged display switching signal over a time period that is arbitrarily determined for each case of non-enlarged display in the case of enlarged display for generating a switching signal And when the enlarged display information is the enlarged display, the switching signal is set to the enlarged display switching signal, and when the enlarged display information is the non-enlarged display, the switching signal is set to the non-enlarged display switching. Based on the switching signal generating means set in the signal, the enlarged display switching signal or the non-enlarged display switching signal, the seal of the registered seal and the seal of the collated seal are switched, and the registration seal An imprint switching means for outputting either a shadow or an imprint of the collated seal stamp as a switching imprint, and an imprint enlargement means for enlarging the switching imprint to an arbitrary size if the enlarged display information is the enlarged display; A seal collation apparatus comprising display means for alternately outputting the enlarged switching imprint or the switching imprint according to the time period of the switching signal.
<Configuration 2>
Registered seal stamp storing means for storing the seal stamp of the registered seal stamp, collated seal stamp storing means for storing the seal stamp of the collated seal stamp, periodic signal generating means for generating a threshold change signal at an arbitrary time period, and calculating an initial threshold value In addition, upon receiving the threshold change signal, threshold generating means for calculating the change threshold so as to change the initial threshold based on an arbitrary increase / decrease value and repeat the increase and decrease of the threshold, and the target based on the initial threshold or the change threshold. Binarization processing means for continuously binarizing the seal stamp of the verification seal in the time period to create a binary image, and the seal of the verification seal stamp binarized based on the seal of the registered seal stamp and the change threshold A first color conversion means for converting each of them into a different display form, and an overlay of the seal of the registered seal stamp and the seal of the collated seal stamp each converted into the different display form by the first color conversion means, A second color converting means for converting a portion where the seal stamp of the recording seal stamp and a seal stamp of the collated seal stamp overlap or a portion not overlapping, and the registration converted to the further different display form by the second color conversion means. A seal collation apparatus, comprising: a display unit that outputs a seal imprinting a seal stamp of a seal stamp and a seal stamp of the collated seal stamp.
<Configuration 3>
In the seal collation apparatus of configuration 2, the binarization processing means binarizes the seal stamp of the registered seal stamp to create a binary image, and the first color conversion means converts the seal stamp seal stamp and the change A seal stamp verification apparatus, wherein the seal stamp of the registered seal stamp binarized based on a threshold value is converted into a different color.
<Configuration 4>
The seal collation apparatus of the structure 2 or 3 WHEREIN: The said display form displays with a color or a pattern, The seal collation apparatus characterized by the above-mentioned.
<Configuration 5>
For the stored seal of the registered seal and the seal of the collated seal , the magnified display instruction means outputs enlarged display information representing an instruction to display the seal of the registered seal and the seal of the collated seal in an enlarged or non-enlarged display. A step of performing an enlarged display instruction process , and a switching signal generating means, when the enlarged display information is the enlarged display, generates the enlarged display switching signal at a time period of the enlarged display, and the enlarged display information is not In the case of enlarged display, a step of performing a switching signal generation process for generating a non-enlarged display switching signal in a time period in the case of non-enlarged display, and the impression switching means is based on the enlarged display switching signal or the non-enlarged display switching signal. , wherein the registration seal of imprint switch the imprint of collated seal, imprint switching processing for outputting one of imprint of the collated seal and imprint of the registered seal as switching imprint And performing, imprint expansion means, if the enlargement display information of the enlarged display is a step of performing imprint enlargement processing for enlarging the switching imprint on any size, the display means, the switching imprint was the enlarged or And performing a display process of alternately outputting the switching imprint in accordance with the time period of the switching signal.
<Configuration 6>
About stored seals of registered seals and verified seals ,
A periodic signal generating means for performing a periodic signal generating process for generating an arbitrary time period threshold change signal;
A step of performing threshold generation processing for calculating a change threshold so that the threshold generation means calculates an initial threshold and, upon receiving the threshold change signal, changes the initial threshold based on an arbitrary increase / decrease value and repeats the increase and decrease of the threshold. When,
A step of performing binarization processing in which binarization processing means binarizes the imprint of the collated seal stamp continuously in the time period based on the initial threshold or the change threshold; and
Performing a first color conversion process in which the first color conversion means converts the seal stamp of the registered seal stamp and the seal stamp of the collated seal stamp binarized based on the change threshold to different display forms;
A second color conversion unit superimposes the seal of the registered seal stamp and the seal of the collated seal stamp converted into the different display forms by the first color converting unit, respectively, and imprints of the registered seal stamp and the collated seal stamp Performing a second color conversion process for converting the overlapping part or the non-overlapping part into a different display form;
Performing a display process of outputting an imprint in which the seal of the registered seal stamp and the seal of the collated seal stamp that have been converted into the further different display form by the second color converting means are superimposed on each other. A seal verification method.

  According to the present invention, the problems in each of the “continuity verification method by cutting composition”, “alternate display method”, and “coincidence / inconsistency color-coded display method” are solved, and seal verification is performed from the seal pattern of the registered seal and the target seal. Can be implemented accurately.

  Hereinafter, a stamp collation apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings.

  The first embodiment of the present invention will be described in detail. In the first embodiment, in the “continuity verification method by cutting composition”, cutting composition by oblique lines of arbitrary angles or cutting composition by arbitrary cutting shapes is performed without increasing the storage amount of the boundary coordinate information of cutting. This is a seal verification device that can be used. FIG. 1 is a block diagram showing a first embodiment of the seal collation apparatus of the present invention.

  In FIG. 1 (A), the seal collation apparatus includes a cutting position control unit 1, a registration mark holding unit 2, a check mark holding unit 3, a cutting pattern generation unit 4, a cutting mask generation unit 5, an imprint selection output unit 6, and a display. The control unit 7 is used. Further, FIG. 1B shows the internal configuration of the cutting mask generator 5. The cutting mask generation unit 5 includes a coordinate conversion unit 5A and a drawing processing unit 5B. Moreover, although not shown, it has an input device which performs a menu operation or the like of a seal collator.

  The cutting position control unit 1 interprets an instruction by a menu operation, a keyboard operation, a mouse operation, or the like of the seal collation determination person, and outputs a cutting pattern shape and movement information. In the cutting pattern shape, for example, the type of shape such as “straight line”, “cross”, “L-shaped”, etc. is registered. In the case of a type having a width such as a cross shape, additional information such as the width of the cross is also registered. The shape type and additional information indicating these cutting pattern shapes are sent to the cutting pattern generator 4. The cutting pattern shape type and the additional information corresponding to the type are registered in advance in the cutting position control unit 1 and selected from them. Further, the value of the additional information such as the width of the cross can be arbitrarily designated by a registered default value or a seal collation judge.

  The movement information includes vertical and horizontal parallel movement amounts and left and right rotation angles. These pieces of information are sent to the cutting mask generation unit 5. It should be noted that in “slanting” cutting, it is possible to designate a diagonal line at an arbitrary angle as a result by selecting a single straight line shape and arbitrarily designating a rotation angle. Similarly, for other shapes, even one shape can be translated and rotated arbitrarily.

  The registered seal holding unit 2 is a memory or the like that reads a temporary seal image of a registered seal stamp to be verified from a file (not shown) that stores the seal stamp of the registered seal stamp together with a corresponding account number or the like. The to-be-verified stamp holding unit 3 is a memory or the like that temporarily stores a stamp image obtained by digitizing an imprint of a to-be-checked seal that is subjected to collation with a registered seal stamp by an input scanner unit (not shown). .

  The cutting pattern generation unit 4 generates a two-dimensional figure as a cutting pattern based on the cutting pattern shape from the cutting position control unit 1 and the size of the seal image to be verified. This two-dimensional figure is sent to the cutting mask generator 5. Here, the size of the imprint image to be collated is determined based on the data of each imprint obtained from the registered stamp holding unit 1 and the to-be-verified stamp holding unit 2. First, perform registration processing so that the imprint of the registered seal to be collated and the imprint of the collated seal are overlapped.If the size of the imprint of the registered seal and the collated seal is different, compare both imprints, A size matching process is performed to match the size of the check target stamp with the size of the registered stamp. The alignment process and the size adjustment process may be a conventionally used method (for example, a method disclosed in Patent Document 4).

  The size of the imprint image to be collated is set as the size of the imprint of the registered seal after the registration processing and the size adjustment processing. A two-dimensional figure is a collection of one or more figures and is information such as coordinate values that determine the figure. For example, a polygon is a two-dimensional coordinate of each vertex, and a circle is composed of a center coordinate and a radius.

  The cutting mask generation unit 5 includes a coordinate conversion unit 5A and a drawing processing unit 5B. The two-dimensional figure received from the cutting pattern generation unit 4 and the parallel movement amount and rotation as movement information received from the cutting position control unit 1 A cutting mask is generated based on the angle. First, the size of the imprint image to be verified is set as a cutting mask region (size).

  Next, the coordinate conversion unit 5A performs coordinate conversion of the coordinate value of the two-dimensional figure based on the parallel movement amount and the rotation angle, and the drawing processing unit 5B uses the coordinate conversion unit 5A on the area (size) of the cutting mask. Draw according to the coordinate value after coordinate conversion.

  The cutting mask is a two-dimensional array of binary flags for selecting the seal of the registered seal and the seal of the collated seal for each pixel. For example, when a two-dimensional figure is drawn in black and white (for example, white has a bit value of 0 and black has a bit value of 1) on the area of the cutting mask, a cutting mask having a bit value of 0 or 1 is generated. The generated cutting mask is stored in the memory of the cutting mask generator 5 (not shown). The coordinate conversion unit 5A and the drawing processing unit 5B may be two-dimensional general graphic drawing processing. (For example, a two-dimensional drawing method common in computer graphics technology)

  The imprint selection output unit 6 selects a pixel from either the registered mark holding unit 2 or the checked mark holding unit 3 according to the cutting mask that is a two-dimensional binary array generated by the cutting mask generating unit 5, An imprint image synthesized from the registered imprint and the check target stamp is output. For example, a binary value corresponding to the array position of the pixel to be selected is extracted from the cutting mask, and when the binary bit value is 0, the pixel of the registration seal corresponding to the array position is selected, and the bit value is 1 In this case, the pixel of the verification seal corresponding to the array position is selected. The imprint image synthesized from the registered imprint and the check target imprint is sent to the display control unit 7.

  The display control unit 7 displays the combined imprint image received from the imprint selection output unit 6 on a CRT or the like via a display memory or the like.

  FIG. 2 is a flowchart showing the operation of the first exemplary embodiment of the present invention. Here, first, the seal collation determination person reads the imprint of the registered seal stamp from the account number or the like into the registered seal holding unit 2 (step 1), reads the imprint of the collated seal stamp using a scanner or the like, and stores it in the collated stamp holding unit 3. Store (step 2). Next, the keyboard and mouse are operated to specify the type and additional information as the cutting pattern shape, the parallel movement amount and the rotation angle as the movement information (step 3). The cutting pattern generation unit 4 determines the size of the imprint image to be collated based on the data of each imprint obtained from the registered stamp holding unit 1 and the to-be-verified stamp holding unit 2, and the size and the selected cutting pattern. A cutting pattern consisting of a two-dimensional figure is generated from the shape type and additional information (step 4).

  Next, the cutting mask generation unit 5 determines the size of the imprint image to be verified based on the cutting mask region (size), the two-dimensional figure generated in step 4, the translation amount and the rotation angle as the movement information. Then, a two-dimensional figure is drawn on the cutting mask area to generate a cutting mask (step 5). Next, the imprint selection output unit 6 extracts the binary value at each array position in the cutting mask. For example, when the bit value is 0, the imprint selection output unit 6 extracts the pixel at that position from the registration mark holding unit 2 and the bit value is 1. In this case, a selection is made to extract the pixel at that position from the collation mark holding unit 3, and a combined seal image is generated (step 6).

  Finally, the display control unit 7 displays and outputs the cut and imprinted seal on the CRT (step 7).

Next, the processing steps in the first embodiment will be specifically described with reference to the example and the flowchart of FIG.

  First, a case where “straight line” is selected as the type of cutting pattern shape will be described.

  The seal stamp collation judgment person reads the seal stamp of the registered seal stamp shown in FIG. 3A to the registered stamp holding unit 2, reads the seal stamp of the collated seal stamp shown in FIG. (FIG. 2, steps 1 and 2).

  Next, selection of the cutting pattern shape and movement information are designated. Here, “straight line” is selected as the type of the cutting pattern shape. If the type is a straight line, no additional information is selected. The parallel movement amount, which is the movement information, is “10 left shift”, and the rotation angle is “30 ° right rotate”. (Figure 2, Step 3)

  As in steps 1 to 3 above, when the seal stamp collation judge inputs, the area (size) of the seal stamp to be collated is determined based on the seal stamp of the registered seal stamp and the seal stamp of the collation stamp. Next, a two-dimensional figure is generated from the selected cutting pattern shape “straight line” (step 4).

  The two-dimensional figure determines the size to be generated based on the size of the seal impression. For example, the size is three times the size of the seal. Specifically, when the cutting pattern shape is a “straight line”, as shown in FIG. 4 (G), a half-plane hatched rectangle P1 is generated as a two-dimensional figure. The two-dimensional figure becomes the shaded part of the rectangle because it determines which side (pixel) a certain point (pixel) is cut with respect to the straight line, so that it becomes a half plane with the straight line as the boundary, Since the object is a finite area, it becomes a rectangle.

  Next, a procedure in which the cutting mask generation unit 5 receives a two-dimensional figure as shown in FIG. 4 (K) from Step 4 and performs coordinate conversion and drawing processing to generate FIG. 4 (K) as a cutting mask will be described. (FIG. 2, step 5).

  First, the area (size) of the cutting mask is determined based on the size of the seal image to be verified. M1 in FIG. 4 (c) is a cutting mask region. Next, since the parallel movement amount and the rotation angle are specified, the coordinate conversion unit 5A performs coordinate conversion of the two-dimensional figure P1 shown in FIG. 4 in accordance with the parallel movement amount and rotation angle from the cutting position control unit 1. P2 in FIG. 4 (c) is a two-dimensional figure after coordinate conversion.

  Based on the two-dimensional figure P2 after the coordinate conversion, the drawing processing unit 5B performs drawing on the cutting mask. A cutting mask obtained by drawing the two-dimensional figure P2 on the cutting mask region is shown in FIG. In FIG. 4 (M), M1 represents a two-dimensional array of cutting mask regions, V1 (white region) has an array element value of bit value 0, and V2 (shaded region) has an array element value of bit. The value 1 is represented. FIG. 3C is the same diagram as FIG. L1 in FIG. 3 (c) corresponds to the boundary line between V1 and V2 in FIG. 4 (c) and serves as a cut surface for determining the continuity between the registered seal and the check target seal.

  The imprint selection output unit 6 takes out the binary value of each array position in the cutting mask as shown in FIG. 4 (K), and takes out the pixel at that position from the registration mark holding unit 2 when the bit value is 0, When the bit value is 1, it is selected to take out the pixel at that position from the collation mark holder 3 (FIG. 2, step 6). The pixel at the position V1 in FIG. 4 (K) is the pixel of the registered seal stamp in FIG. 3 (A), and the pixel at the position V2 in FIG. This is a pixel of the impression. In FIG. 3D, an imprint obtained by synthesizing the imprint of the registered seal and the seal of the collated seal is output. Note that the broken line L2 in FIG. 3D is added to make the cutting position easy to understand, and does not exist in the actual combined impression. Further, when displaying, only the combined imprint may be output or may be output in addition to the combined imprint of the broken line L2 in order to make the cut surface easy to understand.

  The display control unit 7 displays and outputs the cut and combined imprint shown in FIG. 3D on the CRT (FIG. 2, step 7).

  Next, a case where “cross” is selected as the type of the cutting pattern shape will be described.

  Assume that the processes up to steps 1 and 2 in the flowchart of FIG. 2 are executed.

  Select cutting pattern shape and specify movement information. Here, “cross” is selected as the type of the cutting pattern shape. When the type is “cross”, since the width of the cross becomes additional information, the seal collator determines a predetermined value or an arbitrary value as the width of the cross. Here, it is assumed that the additional information is width 10, the parallel movement amount that is movement information is “3 right movement”, and the rotation angle is “20 degree right rotation”. (Figure 2, Step 3)

  As in steps 1 to 3 above, when the seal stamp collation judge inputs, the area (size) of the seal stamp to be collated is determined based on the seal stamp of the registered seal stamp and the seal stamp of the collation stamp. Next, a two-dimensional figure is generated from the selected cutting pattern shape “cross” (step 4).

  The two-dimensional figure determines the size to be generated based on the size of the seal impression. For example, the size is three times the size of the seal. Specifically, when the cutting pattern shape is “cross”, as shown in FIG. 4 (C), it becomes a cross shape having a width, and the hatched portion P3 is generated as a two-dimensional figure. The portion indicated by the arrow in FIG. 4 (ko) indicates the width of the cross.

  Next, a procedure in which the cutting mask generation unit 5 receives a two-dimensional figure as shown in FIG. 4 (c) from step 4 and performs coordinate conversion and drawing processing to generate FIG. 4 (f) as a cutting mask will be described. (FIG. 2, step 5).

  First, the area (size) of the cutting mask is determined based on the size of the seal image to be verified. M2 in FIG. 4 (sa) is an area of the cutting mask. Next, since the parallel movement amount and the rotation angle are specified, the coordinate conversion unit 5A performs coordinate conversion of the two-dimensional figure P3 in FIG. 4 (c) according to the parallel movement amount and rotation angle from the cutting position control unit 1. P4 in FIG. 4 (s) is a two-dimensional figure after coordinate conversion.

  Based on the two-dimensional figure P4 after the coordinate conversion, the drawing processing unit 5B performs drawing on the cutting mask. A cutting mask obtained by drawing the two-dimensional figure P4 on the cutting mask region is shown in FIG. In FIG. 4 (M), M2 represents a two-dimensional array of cutting mask regions, V3 (white region) has an array element value of bit value 0, and V4 (shaded region) has an array element value of bit. The value 1 is represented. FIG. 3 (o) is the same diagram as FIG. L3 and L4 in FIG. 3 (o) correspond to V3 and V4 in FIG. The boundary line between L3 and L4 serves as a cut surface for determining the continuity between the registered seal and the check target seal.

  The imprint selection output unit 6 takes out the binary value of each array position in the cutting mask as shown in FIG. 4 (b), and takes out the pixel at that position from the registration mark holding unit 2 when the bit value is 0, When the bit value is 1, it is selected to take out the pixel at that position from the collation mark holder 3 (FIG. 2, step 6). The pixel at the position V3 in FIG. 4 (S) is the pixel of the registered seal stamp in FIG. 3 (A), and the pixel at the position V4 in FIG. 4 (S) is the target seal to be verified in FIG. This is a pixel of the impression. In FIG. 3 (f), an imprint obtained by synthesizing the imprint of the registered seal and the seal of the collated seal is output. Note that the broken line L5 in FIG. 3 (f) is added for easy understanding of the cutting position, and does not exist in the actual combined impression. In addition, when displaying, only the combined imprint may be output or may be output in addition to the combined imprint of the broken line L5 for easy understanding of the cut surface.

  The display control unit 7 displays and outputs the cut and combined imprint shown in FIG. 3 (f) on the CRT (FIG. 2, step 7).

  In the first embodiment, “straight line” and “cross” have been described as the types of cutting pattern shapes. However, the first embodiment is not limited to these shapes, and L-shapes, circles, curves, etc. Is registered in the cutting position control unit 1 as the type of cutting pattern shape, it can also be applied to these cutting pattern shapes.

  A two-dimensional figure and a cutting mask when the type of cutting pattern shape is “circle”, “L”, and “curve” will be described with reference to the drawings. It is assumed that the area (size) of the seal stamp to be collated is determined based on the seal stamp of the registered seal stamp and the seal stamp of the collated seal stamp.

  A case where the type of the cutting pattern shape is “circle” will be described. When the type is “Circle”, the diameter of the circle is additional information, and therefore the seal collator determines a predetermined value or an arbitrary value as the diameter of the circle. Here, it is assumed that the additional information has a diameter of 40, and the parallel movement amount that is the movement information is “38 rightward movement” and “35 downward movement”. A two-dimensional figure P5 in the case where the type of the cutting pattern shape is “circle” is shown in FIG. Next, based on the amount of translation, the two-dimensional figure P5 in FIG. P6 in FIG. 5H is a two-dimensional figure after coordinate conversion. M3 in FIG. 5H is a cutting mask region (size).

  FIG. 5F shows a cutting mask obtained by drawing the two-dimensional figure P6 on the cutting mask region M3.

  A case where the type of the cutting pattern shape is “L” will be described. When the type is “L”, no additional information is selected. Here, the parallel movement amount that is the movement information is “15 downward movement”, and the rotation angle is “10 degree right rotation”. A two-dimensional figure P7 in the case where the type of the cutting pattern shape is “L” is shown in FIG. When the cutting pattern shape is “L-shaped”, as shown in FIG. 6F, the square P7 in the hatched portion of the ¼ plane is generated as a two-dimensional figure. Next, the coordinate transformation is performed on the two-dimensional figure P7 shown in FIG. P8 in FIG. 6E is a two-dimensional figure after coordinate conversion. M4 in FIG. 6E is a cutting mask region (size).

A cutting mask in which the two-dimensional figure P8 is drawn on the cutting mask region M4 is shown in FIG.

A case where the type of the cutting pattern shape is “curve” will be described. When the type is “curve”, the extreme point of the curve becomes additional information, and therefore the seal collation determiner designates a default value or an arbitrary value as the extreme point of the curve. Here, it is assumed that the additional information is the extreme points (5, 5) and (−6, −6), the parallel movement amount that is the movement information is “5 right shift”, and the rotation angle is “10 degree rotation”. FIG. 7 (mi) shows a two-dimensional figure P9 when the cutting pattern shape type is “curve”. Next, the coordinate transformation of the two-dimensional figure P9 in FIG. P10 in FIG. 7 (m) is a two-dimensional figure after coordinate conversion. M5 in FIG. 7 (m) is a region (size) of the cutting mask.

A cutting mask obtained by drawing the two-dimensional figure P10 on the cutting mask region M10 is shown in FIG.

<Effect of the first embodiment>
As described above, the cutting pattern generation unit 4 and the cutting mask generation unit 5 are provided, and according to the generated cutting mask, the seal stamp of the registered seal stamp and the seal stamp of the collation target are selected and output, and the cut and combined seal stamp is displayed. By doing so, it is only necessary to store one shape for each type of cutting pattern shape, and there is an effect that the storage amount can be reduced. Furthermore, arbitrary translation and rotation can be performed with respect to one cutting pattern shape. Therefore, when there is a mismatch between the registered seal and the stamp to be verified, there is an effect that it is easy to match the cutting position to the mismatch.

The second embodiment of the present invention will be described in detail. In the second embodiment, in the “continuity verification method by cutting and combining”, a method of combining after reversing the imprint of one seal when combining by cutting with a straight line is used. In addition to the above, the seal collation apparatus can simultaneously verify the left-right symmetry of the cutting line.

  Before explaining the configuration of the second embodiment, how to synthesize and display a registered seal stamp and a verified seal stamp will be described with reference to FIG. A broken line L6 in FIG. 8 represents a cutting position, FIG. 8 (su) is an imprint of a collated seal stamp, and FIG. 8 (so) is an imprint of a registered seal stamp. The imprint of the result of reversing the imprint of the collated seal stamp at the cutting position L6 is as shown in FIG. 8C, and the left side portion of L6 in the imprint of the registered seal stamp 8) and the reversed collated seal stamp. The imprinted figure is combined with the right portion of L6 in FIG. 8 (C), and the result is as shown in FIG.

  Note that the broken line L6 in FIG. 8 is an overwritten explanation and does not exist in the actual combined seal. Based on the inverted display of FIG. 8 (t), the seal stamp determination person determines the continuity of the imprint at the cutting position L6 and the left / right symmetry of L6, and matches the registered seal and the stamp to be verified. Judge the discrepancy. For example, in the example of FIG. 8, since the cutting position L6 is located between the characters in the imprint, the cutting composition of the first embodiment is as shown in FIG. Although the nature is unknown, from FIG. 8 (t) synthesized by inverting the second embodiment, the left-right symmetry of L6 can be used as a judgment material (the letter “5” is not left-right symmetric). ).

  FIG. 9 is a block diagram showing a second embodiment of the seal collation apparatus of the present invention. In the second embodiment, blocks having the same functions as those in the first embodiment are given the same numbers, and only blocks different from the first embodiment in the second embodiment will be described in detail.

  In FIG. 9A, the cutting position control unit 11, the registration mark holding unit 2, the check mark holding unit 3, the cutting pattern generation unit 4, the cutting mask generation unit 5, the seal selection output unit 16, the display control unit 7, the stamping An inversion unit 18 is included. Further, FIG. 9B shows the internal configuration of the imprint inversion unit 18. The imprint inversion unit 18 includes a coordinate reverse conversion unit 18A, an image reverse unit 18B, and a coordinate conversion unit 18C. Moreover, although not shown, it has an input device which performs a menu operation or the like of a seal collator.

  The cutting position control unit 11 is different from the cutting pattern shape type only for “straight line” (in the following description, it is a vertical straight line, but a horizontal straight line can be similarly processed). In addition to sending the movement information to the cutting mask generation unit 5, the movement information is also sent to the imprint reversing unit 18. Other operations are the same as those in the first embodiment.

  The imprint reversing unit 18 receives the vertical and horizontal parallel movement amounts and the rotation angle, which are the movement information from the cutting position control unit 11, and generates an imprint obtained by reversing the imprint of the verification mark holding unit 3 based on the straight line of the cutting position. And sent to the seal selection output unit 16. Here, the inside of the imprint imprint reversing unit 18 includes coordinate conversion based on the parallel movement amount and the rotation angle from the cutting position control unit 11, coordinate reverse conversion that is the reverse conversion of this coordinate conversion, and left / right reverse conversion. A coordinate conversion unit 18C, an image inversion unit 18B, and a coordinate reverse conversion unit 18A corresponding to the above are processed in the order of the coordinate reverse conversion unit 18A, the image inversion unit 18B, and the coordinate conversion unit 18C. The pixel data of the check target imprint subjected to the inversion process is registered in a memory existing in the imprint inversion unit 18.

  The imprint selection output unit 16 is different in that the imprint of the collated seal stamp is not obtained from the collated seal stamp holding unit 3 but the inverted imprint of the collated seal stamp is obtained from the imprint inversion unit 18. Other operations are the same as those in the first embodiment.

  FIG. 10 is a flowchart showing the operation of the second exemplary embodiment of the present invention. In the second embodiment, steps having the same functions as those in the first embodiment are given the same numbers, and steps different from those in the first embodiment in the second embodiment will be described in detail.

  As in the first embodiment, first, the seal stamp collation judge reads out the registered seal image to the registered seal holding unit 2 (step 1) and stores the collated seal stamp in the collated seal holding unit 3 (step S1). Step 2).

  Next, the type of the cutting pattern shape is selected, and the parallel movement amount and the rotation angle are designated. In the second embodiment, the shape type of the cutting pattern is “straight line”, and “vertical straight line” in the following description (step 13). The cutting pattern generation unit 4 generates a two-dimensional figure (step 4), and the cutting mask generation unit 5 generates a cutting mask (step 5). Next, the seal collation determination person determines whether or not the parallel movement amount has been designated, and if so, the process proceeds to step 18; otherwise, the process proceeds to step 17 ( Step 16).

  Next, the seal collation determination person determines whether or not the rotational movement amount has been designated. If so, the process proceeds to step 18; otherwise, the process proceeds to step 21 ( Step 17). Step 21 is a case where the “vertical straight line” which is the cutting pattern shape is not translated or rotated. Accordingly, the imprint reversing unit 18 performs left-right reversal conversion of the imprint of the verification seal by the image reversing unit 18B based on the straight line of the cut pattern shape (step 21).

  Steps 18, 19, and 20 are cases where the “vertical straight line” that is the cutting pattern shape is translated or rotated. Therefore, the imprint reversing unit 18 performs coordinate reverse conversion on the coordinates of the seal stamp of the collated seal stamp by the coordinate reverse conversion unit 18A based on the straight line (parallel movement amount / rotation movement amount) of the cut pattern shape. The state is the same as when not performing (step 18). Next, the image reversing unit 18B performs left / right reversal conversion (step 19), and finally the coordinate conversion unit 18C performs coordinate conversion to return to the reverse coordinate conversion performed in step 18 (step 20).

  Next, the imprint selection output unit 16 takes out the binary value in each array element of the cutting mask generated by the cutting mask generation unit 5, and when the bit value is 0, the registration mark holding unit 2 extracts the pixel at that position. When the bit value is 1, selection is made to take out the pixel at the corresponding position from the imprint inversion unit for the imprint of the verification stamp subjected to the reversal processing, and the synthesized imprint is output. (Step 22).

  Finally, the display control unit 7 displays and outputs the cut and imprinted seal on the CRT (step 7).

  Next, the processing steps in the second embodiment will be specifically described with reference to the example and the flowchart of FIG. First, the case where the type of the cutting pattern shape is “straight line” and the parallel movement and the rotational movement are not performed has been described with reference to FIG. 9. Here, the case where the parallel movement is performed and the case where the rotational movement is performed are described. explain.

  Here, it is assumed that the processing of steps 1 and 2 in the flowchart of FIG. 10 is executed, and the imprint of the registered seal stamp shown in FIG. It is assumed that the seal stamp of the verification seal is read and stored in the verification mark holding unit 3.

  First, “straight line” is designated as the type of cutting pattern shape, and the parallel movement amount “5 right movement” is designated as cutting pattern movement information.

  Here, using FIG. 11 and FIG. 12, steps 13, 4, and 5 of FIG. 10 will be described with reference to a cutting pattern shape and movement information to generate a cutting mask. First, FIG. 11A shows coordinate axes and cutting mask regions (sizes). FIG. 11B is a diagram in which a two-dimensional figure is generated on the coordinate axis based on the type of “cut line” of the cutting pattern shape. FIG. 11C is a diagram in which the two-dimensional figure is moved to the right based on the movement information “move right” in FIG. FIG. 11D shows a cutting mask in which a two-dimensional figure is drawn in the area of the cutting mask.

  Next, in step 16, it is determined whether or not a parallel movement amount is designated. Here, since the parallel movement amount “right movement” is designated, the process proceeds to step 18 (FIG. 10, step 16).

  FIG. 11E shows an imprint of the collation mark, and the coordinates of the imprint of the collation mark are inversely converted. FIG. 11F shows a diagram obtained by inversely transforming (moving leftward) FIG. 11E (FIG. 10, step 18). Next, FIG. 12G is a diagram obtained by horizontally inverting FIG. 11F with respect to the vertical axis (FIG. 10, step 19). Further, FIG. 12H shows a diagram obtained by coordinate-transforming (moving to the right) in FIG. (FIG. 10, step 20).

  Here, FIG. 12 (I) shows the cutting position obtained with the cutting mask of FIG. 11 (D) in the figure of the check mark in FIG. 12 (H), and the cutting position is shown in the registration mark. The figure is shown in FIG.

  In step 22, the binary value in each array element of the cutting mask is taken out, the registration mark in FIG. 12 (J) or the imprint of the inspected seal stamp subjected to the inversion process in FIG. 12 (I) is selected and synthesized. Output the imprint. The synthesized seal is shown in FIG. (FIG. 10, step 22).

  The following is a case where “straight line” is designated as the type of cutting pattern shape, and a rotational movement amount “20 ° right rotation” is designated as cutting pattern movement information. Here, with reference to FIGS. 13 and 14, a process in which steps 13, 4, and 5 in FIG. 10 generate a cutting mask based on the cutting pattern shape and movement information will be described. First, FIG. 13 (L) shows a diagram in which a two-dimensional figure is generated and rotated by 20 degrees on the coordinate axis based on the type “straight line” of the cutting pattern shape.

  FIG. 13M shows a cutting mask in which a two-dimensional figure is drawn in the area of the cutting mask.

  In step 17, it is determined whether or not a rotational movement amount is designated. Here, since the rotational movement amount “20 degree right rotation” is designated, the process proceeds to step 18 (FIG. 10, step 17).

  FIG. 13N shows an imprint of the collation mark, and the coordinates of the imprint of the collation mark are inversely converted. FIG. 13O shows a diagram obtained by inversely transforming FIG. 13N (rotating 20 degrees to the left) (FIG. 10, step 18). Next, FIG. 13 (P) shows a diagram obtained by horizontally inverting FIG. 13 (O) with respect to the vertical axis (FIG. 10, step 19). Further, FIG. 13Q shows a diagram obtained by coordinate transformation (rotating 20 degrees to the right) of FIG. (FIG. 10, step 20).

  Here, FIG. 14 (R) shows the cutting position obtained with the cutting mask of FIG. 13 (M) in the figure of the check mark in FIG. 13 (Q), and the cutting position is shown in the registration mark. The figure is shown in FIG.

  In step 22, the binary value in each array element of the cutting mask is taken out, and the registration mark in FIG. 14 (S) or the imprint of the inspected seal stamp subjected to the inversion process in FIG. 14 (R) is selected and synthesized. Output the imprint. The synthesized imprint is shown in FIG. (FIG. 10, step 22).

  In the second embodiment, the imprint inversion unit 18 inverts the imprint of the collated seal stamp, but may invert the imprint of the registered seal stamp. In this case, an imprint that is a combination of the imprint of the registered seal stamp that has been reversed and the imprint of the collated seal stamp that has not been reversed is output.

<Effects of Second Embodiment>
By providing the imprint reversing unit 18 as described above, the imprint of the collated seal stamp is reversed with respect to the straight line that is the cutting position, and the imprint obtained by cutting and synthesizing the reverse imprint and the registered seal stamp is displayed. In addition to the determination of the continuity of the imprinting of the cutting position, there is an effect that it is possible to simultaneously determine the left-right symmetry with respect to the straight line of the cutting position.

  The third embodiment of the present invention will be described in detail. The third embodiment is a seal collation device that can reduce the operation of moving the operator's cutting position by adopting a configuration in which the cutting position is changed periodically in the first embodiment. FIG. 15 is a block diagram showing a third embodiment of the seal collation apparatus of the present invention.

  In the third embodiment, blocks having the same functions as those in the first embodiment are given the same numbers, and only blocks different from the first embodiment in the third embodiment will be described in detail.

  In FIG. 15, the cutting position control unit 21, the registration mark holding unit 2, the check mark holding unit 3, the cutting pattern generation unit 4, the cutting mask generation unit 5, the imprint selection output unit 6, the display control unit 7, and periodic movement generation Part 28. Moreover, although not shown, it has an input device which performs a menu operation or the like of a seal collator.

  In addition to the operation of the cutting position control unit 1 of the first embodiment, the cutting position control unit 21 has operations for specifying whether or not to change the movement information of the cutting pattern periodically and for specifying the type of change. Then, the periodic movement generator 28 is notified of the presence / absence and type of change. Further, the change movement information from the periodic movement generation unit 28 is synthesized with the movement information of the cutting pattern.

  Here, changing periodically is, for example, cutting by rotating the cutting position by increasing the rotation angle of the cutting pattern at regular time intervals, or by changing the parallel movement amount at regular time intervals. The position is to be slid (including a horizontal slide movement and an oblique slide movement). These change methods are change types, and in the above example, rotation, horizontal slide, and oblique slide correspond to them.

  The periodic movement generation unit 28 receives presence / absence and change type of the movement information of the cutting pattern from the cutting position control unit 21 in a time period, and when changing, cuts the change movement information in a time period according to the change type. Output to the position control unit 21. The change movement information includes a parallel movement amount and a rotation angle. For example, when the change type is rotation, the rotation angle is increased or decreased by 1 degree every fixed time, or when the change type is oblique slide, every fixed time. Increase or decrease the translation amount in the diagonal direction.

  FIG. 16 is a flowchart showing the operation of the third exemplary embodiment of the present invention. In the third embodiment, steps having the same functions as those in the first embodiment are assigned the same numbers, and steps different from those in the first embodiment in the third embodiment will be described in detail.

  As in the first embodiment, first, the seal collation determiner reads out the registered seal imprint to the registered seal holding unit 2 (step 1) and stores the collated seal imprint in the collated seal holding unit 3. (Step 2).

  Next, the type of the cutting pattern, additional information, the amount of parallel movement, and the rotation angle are designated by operating a keyboard, a mouse, or the like. Also, the seal collator determines whether or not to change the time period, and when changing the time period, also specifies the change type (step 3). Next, it is determined whether or not there is a time periodic change and whether or not a change type is designated (step 31).

  The cutting position control unit 21 interprets these designations, outputs the cutting pattern shape to the cutting pattern generation unit 24, and outputs parallel movement amount and rotation angle movement information (hereinafter referred to as To) to the cutting mask generation unit 25. To do. Further, the presence / absence of change and the change type are output to the periodic movement generator 28.

  If the time periodic change and change type are not specified in step 31, the processing from step 4 to step 7 is performed. As in the first embodiment, the cutting pattern generation unit 4 and the cutting mask generation unit 5 operate, and the imprint selection output unit 6 outputs the cut and combined imprint to the display control unit 7 according to the generated cutting mask to generate a CRT. To display.

  A case where a time periodic change and a change type are designated in step 31 will be described. When the periodic movement generation unit 28 receives an instruction from the cutting position control unit 21 to change periodically, the change movement information according to the change type at regular time intervals (hereinafter referred to as t0, t1, t2, and so on). The parallel movement amount and the rotation angle are changed, and the change movement information (hereinafter, change movement information at time t is referred to as D (t)) is output to the cutting position control unit 21 (step 32).

  When the cutting position control unit 21 receives the change movement information at regular time intervals, the cutting position control unit 21 combines the first movement information To and the change movement information D (t) to obtain new movement information (hereinafter referred to as T (t)). Is calculated and sent to the cutting mask generator 25 (step 33).

  Thereafter, the process proceeds to step 5 where a cutting mask is generated based on the changed movement information, and an imprint cut and synthesized in accordance with the new movement information is displayed. Note that the combination of the movement information To and the change movement information D (t) is performed by adding each of the parallel movement amount and the rotation angle.

  In step 34, it is determined whether or not there is an instruction to end the display of the seal impression. If it is to end, the process is ended. If not, the process proceeds to step 21.

  Next, how the cutting position changes with time will be described with reference to FIG. The direction indicated by the thick arrow in FIG. 17 is the moving direction. Time is t0, t1, t2, t3 at regular time intervals. . . FIG. 17 () shows a case where the cutting pattern shape type is “straight line” and the change type is “lateral slide”. By increasing the parallel movement amount in the change movement information in the direction of the thick arrow (right direction) in FIG. 17 (tu), the straight line of the cutting position at each time becomes the broken line L (t0), Move as indicated by L (t1), L (t2), and L (t3). Therefore, the location of the cutting and combining of the registered seal and the stamp to be verified is automatically changed and displayed with time.

  Similarly, the case where the type of the cutting pattern shape is “straight line” and the change type is “rotation” is shown in FIG. The cutting position at each time is cut and synthesized while automatically changing to broken lines K (t0), K (t1), K (t2), and K (t3).

  FIG. 17G shows a case where the cutting pattern shape type is “cross” and the change type is “slanting slide”. The cutting position at each time is cut and synthesized while automatically changing to a right diagonal line M (t0) and a left diagonal line M (t1).

<Effect of the third embodiment>
As described above, the periodic movement generating unit 28 is provided so as to display an imprint obtained by cutting and synthesizing the seal of the registered seal and the seal of the collated seal while automatically changing the cutting position periodically. Thus, in the work of searching for a place where there is no continuity of the imprint at the cutting position, there is no need for an operation for the seal collation judge to move the cutting position, and it is possible to focus on visually checking the continuity of the imprint. is there.

  The fourth embodiment of the present invention will be described in detail. The fourth embodiment is the same as in the third embodiment in the “seal collation apparatus that inverts the imprint of the collated seal stamp and cuts and combines it with the registered seal stamp” in the second embodiment. Is a seal verification device that can simultaneously verify the left and right symmetry of the cutting position in addition to the continuity at the cutting position, and the operation of moving the operator's cutting position. This is a seal verification device that can be reduced.

  FIG. 18 is a block diagram showing the fourth embodiment of the seal collation apparatus of the present invention. In the fourth embodiment, blocks having the same functions as those in the first to third embodiments are assigned the same numbers, and only the blocks different from the first to third embodiments in the fourth embodiment are described in detail. Explained.

  In FIG. 18, the cutting position control unit 31, the registration mark holding unit 2, the check mark holding unit 3, the cutting pattern generation unit 4, the cutting mask generation unit 5, the imprint selection output unit 16, the display control unit 7, and the imprint inversion unit 18. Have The imprint reversing unit 18 has an internal structure shown in FIG. Moreover, although not shown, it has an input device which performs a menu operation or the like of a seal collator.

  The cutting position control unit 31 targets “straight line” as the type of cutting pattern shape. In addition, there is an operation for specifying whether or not to change the movement information of the cutting pattern in a time period and an operation for specifying the change type, and notifies the periodic movement generation unit 28 of the presence / absence of the change and the change type. Also, the change movement information from the periodic movement generator 28 is combined with the movement information of the cutting pattern and output to the cutting mask generator 35 and the imprint reversing unit 38. Other operations are the same as those in the first embodiment.

  FIG. 19 is a flowchart showing the operation of the fourth exemplary embodiment of the present invention. In the fourth embodiment, steps having the same functions as those in the first to third embodiments are assigned the same numbers, and the steps different from the first to third embodiments in the fourth embodiment are described in detail. explain.

  As in the first to third embodiments, first, the seal collation determiner reads out the registered seal imprint to the registered seal holding unit 2 (step 1) and stores the collated seal imprint in the collated seal holding unit 3. Perform (Step 2).

  Next, the type of the cutting pattern shape is selected, and the parallel movement amount and the rotation angle are designated. In the fourth embodiment, the type of the shape of the cutting pattern is “straight line”. Also, the seal collator determines whether or not the change is made periodically, and if the change is made periodically, the change type is also specified (step 41). Next, it is determined whether or not there is a time periodic change and whether or not a change type is designated (step 31).

  The cutting position control unit 31 interprets these designations, outputs the cutting pattern shape to the cutting pattern generation unit 4, and outputs the movement information of the parallel movement amount and the rotation angle to the cutting mask generation unit 5 and the imprint inversion unit 18. Further, the presence / absence of change and the change type are output to the periodic movement generator 28.

  If the time periodic change and change type are not specified in step 31, the processes of steps 4, 5, 16 to 22 are performed. As in the second embodiment, the cutting pattern generation unit 4, the cutting mask generation unit 5, and the imprint reversing unit 18 operate, and the imprint of the registered seal stamp that is reversed with respect to the registered seal stamp and the cutting line according to the generated cutting mask. The imprint selection output unit 16 cuts and combines them, and the resulting imprint is input to the display control unit 7 and displayed on the CRT (steps 4, 5, 16 to 22, 7).

  A case where a time periodic change and a change type are designated in step 31 will be described. When the periodic movement generating unit 28 receives an instruction from the cutting position control unit 31 to change periodically, the amount of change and the rotation angle of the changed movement information are changed according to the change type at regular intervals, and the change The movement information is output to the cutting position control unit 31 (step 32).

  When the cutting position control unit 31 receives this change movement information at regular time intervals, the cutting position control unit 31 combines the first movement information and the change movement information, calculates new movement information, sends it to the cutting mask generation unit 5, and The new movement information is also output to the seal inversion unit 16 that inverts the seal of the verification seal (step 33).

  Thereafter, the process proceeds to step 5 where a cutting mask is generated based on the changed movement information, and an imprint cut and synthesized according to the new movement information is displayed.

In step 34, it is determined whether or not there is an instruction to end the display of the seal impression. If it is to end, the process is ended. If not, the process proceeds to step 21.

  As in the third embodiment, the state of the change in the cutting line at fixed time intervals is as shown in FIGS. Regarding (g), the cross cut pattern shape is not used in the fourth embodiment, but the change in the oblique direction can be applied.

<Effect of the fourth embodiment>
As described above, the imprint reversing unit 18 and the periodic movement generating unit 28 are provided, and the straight line that is the cutting position is automatically changed periodically, and the imprint of the collated seal is reversed with respect to this straight line. By displaying the seal imprinted with the seal of the registered seal and the registered seal, it is no longer necessary for the seal collation judge to move the cutting position, and the continuity of the seal and the left-right symmetry at the cutting position are reduced. There is an effect that it is possible to focus on visual confirmation.

  The fifth embodiment of the present invention will be described in detail. In the “alternate display method”, the fifth embodiment is a seal collation apparatus that can automatically change the alternate display switching period together with the enlarged display when a local matching condition is seen. FIG. 20 is a block diagram showing a fifth embodiment of the seal collation apparatus of the present invention.

  In the fifth embodiment, blocks having the same functions as those in the first embodiment are assigned the same numbers, and only blocks different from the first embodiment in the fifth embodiment will be described in detail.

  In FIG. 20, a registration mark holding unit 2, a check mark holding unit 3, a switching signal generation unit 41, an imprint switching unit 44, an imprinting enlargement unit 45, an enlarged display instruction unit 47, and a display control unit 7 are provided. Moreover, although not shown, it has an input device which performs a menu operation or the like of a seal collator.

  The switching signal generation unit 41 has a function of generating a signal at a constant time period, the time period to be generated is variable, and has a function of changing the signal generation time period in accordance with an instruction from the enlarged display instruction unit 47. . For example, it has a switching signal generation time interval value for non-enlarged display and a switching signal generation time interval value for enlarged display.

  The seal imprint switching unit 44 has a function of outputting either one of the registered stamp holding unit 2 or the collated stamp holding unit 3 as a whole, and which one to output is an imprint selection flag (for example, an imprint selection flag) Is performed according to the seal stamp of the registered seal stamp when it is ON, and the seal stamp of the collated seal stamp when it is OFF. When this imprint selection flag receives a signal from the switching signal generator 41, it reverses the value of the flag (turns it OFF if it is ON, and converts it ON if it is OFF). Therefore, every time a signal is input from the switching signal generating unit 41 to the imprint switching unit 44, the imprint output by the imprint switching unit 44 is switched between the imprint of the registered seal stamp and the imprint of the collated seal stamp.

  The imprint enlargement unit 45 has a function of enlarging and outputting the input imprint in accordance with an enlargement instruction. For the enlargement process, a general method such as a method of simply overlapping the same pixel values or a method of interpolation by a linear interpolation method may be used. An enlargement instruction for the seal imprint is issued from the enlargement display instructing unit 47, the image of the registered seal stamp or the seal of the collation stamp to be input input from the imprint switching unit 44 is enlarged according to the enlargement instruction, and is output to the display control unit 7. .

  The enlargement display instruction unit 47 interprets the operation of whether or not the seal collation determination person performs enlargement display, and outputs an enlargement display instruction to the seal imprint enlargement unit 45 and also outputs an enlargement display instruction to the switching signal generation unit 41. To do.

  FIG. 19 is a flowchart showing the operation of the fifth exemplary embodiment of the present invention. In the fifth embodiment, steps having the same functions as those in the first embodiment are assigned the same numbers, and steps different from those in the first embodiment in the fifth embodiment will be described in detail.

  As in the first embodiment, first, the seal collation determiner reads out the registered seal imprint to the registered seal holding unit 2 (step 1) and stores the collated seal imprint in the collated seal holding unit 3. (Step 2).

  Here, it is determined whether or not the seal stamp checker has instructed to enlarge and display the seal impression. If the enlarged display is not performed, the process proceeds to step 52. If the enlarged display is performed, the process proceeds to step 56.

  First, a case where the seal collation determination person does not perform enlarged display in step 51 will be described. The enlargement display instruction unit 47 outputs an instruction not to enlarge display (non-enlargement display) to the switching signal generation unit 41 and the seal impression enlargement unit 45 (step 52).

  The switching signal generation unit 41 sets the switching cycle for non-enlarged display and generates a switching signal according to the non-enlarged display switching signal generation time interval value (step 53).

  Upon receiving a signal from the switching signal generator 41, the seal imprint switching unit 44 changes the internal imprint selection flag, and in accordance with the imprint selection flag, the entire imprint of the registered seal or the entire imprint of the collated seal stamp 45. (Step 54).

  Since the imprint enlargement unit 45 has received an instruction not to enlarge and display from the enlargement display instruction unit 47, the input imprint is output to the display control unit 7 as an image of the same size, and the display control unit 7 is displayed on the CRT. The display is output (step 55). If, as a result of these processes, the seal collation judge does not perform an operation for enlarging display, the imprint of the registered seal and the imprint of the collated seal are displayed on the CRT as a switching signal generation time interval value for non-enlarging display. Are alternately displayed in the size of the seal stamp stored in the registered mark holding unit 2 and the check mark holding unit 3.

  Next, a case where the seal collation determination person performs enlarged display in step 51 will be described. The enlarged display instructing unit 47 outputs an instruction to perform enlarged display (enlarged display) to the switching signal generating unit 41 and the seal impression enlarging unit 45 (step 56).

  The switching signal generation unit 41 sets the switching cycle for enlarged display, and generates a switching signal according to the switching signal generation time interval value of the enlarged display (step 57).

  In accordance with this switching signal, the seal impression switching unit 44 outputs the entire seal of the registered seal stamp or the entire seal of the collated seal stamp to the seal enlargement unit 45 (step 58). Since the seal imprint enlargement unit 45 has received an instruction to perform enlargement display from the enlargement display instruction unit 47, it enlarges either the input seal of the registered seal stamp or the seal stamp of the collated seal stamp (step 59). The resulting enlarged image is output to the display control unit 7, and the display control unit 7 displays and outputs the enlarged seal on the CRT. (Step 55).

  As a result of these processes, if the seal collation judge performs an operation for enlarged display, the imprint of the registered seal and the seal of the collated seal are alternately displayed on the CRT with the switching signal generation time interval value for enlarged display. , Displayed in an enlarged size.

  In step 34, it is determined whether or not there is an instruction to end the display of the seal impression.

  As described above, the seal stamp of the registered seal stamp and the seal stamp of the collated seal stamp are enlarged as they are and alternately displayed according to the operation of whether or not to perform magnified display by the seal stamp collation judge, and the switching time interval displayed alternately is expanded. It changes automatically depending on the presence or absence of display.

  The setting of the switching signal generation time interval value for non-enlarged display and the switching signal generation time interval value for enlarged display is effective for visual seal verification determination by setting as follows.

  First, the seal stamp collation judge sees the overall difference in the seal impression and finds a portion that needs to be observed with particular attention. In this case, it is effective to shorten the switching time interval of the alternate display in order to find a place where the seal stamp of the registered seal stamp and the seal stamp of the collated seal stamp appear to flicker.

  Next, when the seal collation judgment person finds a place that should be noticed, it is enlarged and displayed alternately so that the place can be clearly seen. In this case, in order to verify the difference from the visual afterimage phenomenon due to the alternate display of the seal stamp of the registered seal stamp and the seal stamp of the collated seal stamp, it is effective not to shorten the switching time interval of the alternate display.

  Therefore, for the above reason, it is effective to set the switching signal generation time interval value for enlarged display larger than the switching signal generation time interval value for non-enlarged display. For example, the switching signal generation time interval value for enlarged display is set to 300 milliseconds, and the switching signal generation time interval value for non-enlarged display is set to 100 milliseconds.

  The switching time interval and the size of the enlarged display can be arbitrarily designated by a plurality of registered default values or seal collation determiners.

<Effect of Fifth Embodiment>
As described above, the enlarged display instructing unit 47 and the imprint enlargement unit 45 are provided, and the switching time interval for alternately displaying the imprints is changed according to whether or not the enlarged display is performed. In the case of non-enlarged display that searches for a point of interest by comparison and in the case of enlarged display that verifies the difference between the two imprints at the point of interest, the effect of automatically changing to the appropriate alternate display switching time interval This eliminates the need for the seal collation judgment person to change the switching time interval each time, and has an effect of focusing on visual confirmation.

  The sixth embodiment of the present invention will be described in detail. The sixth embodiment is a seal collation device that periodically changes a threshold value for binarizing a multi-tone grayscale image in the “coincidence / inconsistency color classification display method”.

  Before describing the configuration of the sixth embodiment, first, the “match / mismatch color classification display method” will be described. FIG. 22 (na) shows the character “mouth” taken out of the seal of the registered seal stamp, which is displayed with wavy stripes. FIG. 22 (d) shows one character “Ta” in the seal stamp of the collated seal stamp, which is displayed with vertical stripes. FIG. 22 (N) shows the overlapping portions of these two imprints with different stripes. In FIG. 22 (nu), the overlapping portion is displayed with dotted stripes. In FIG. 22, each part is represented by a striped pattern for convenience of drawing, but is displayed using different colors. However, as shown in FIG. 22, it may be displayed using different striped patterns instead of different colors.

  By displaying in this way, the same partial area and different partial areas of the two seal impressions are clearly displayed, and from this display, the seal collation determiner determines whether or not the registered seal stamp and the collated seal stamp match. .

  Next, binarization of a multi-tone grayscale image will be described. For example, a multi-grayscale grayscale image is a 256-tone image in which the value of each pixel is 0 to 255, and the pixel value 0 is black and 255 is not a black and white binary image. The value between white and gray is gray. The closer to 0, the closer to black, the closer to 255, the closer to white. Such an image can be obtained by reading with a scanner or the like having a multi-gradation gray scale reading capability. Therefore, in the seal imprint, the imprint is not uniformly shaded due to the adhesion of vermilion, the way of imprinting, etc., and “blur” or “smear” of the imprint also occurs.

  Accordingly, when the seal imprint is read by the scanner having the multi-gradation gray scale reading capability described above, the pixel value of the seal imprint portion is not a constant gray value but exists in a distribution having a certain width. Thus, setting a certain threshold value and converting the pixel value of each pixel on the black side from the threshold value to black and converting the pixel value on the white side to white is called binarization processing.

  As described above, the above-described coincidence / inconsistency color classification display method is applied to an image obtained by binarizing the impression image of the multi-tone grayscale image. However, as described above, since the imprinted portion does not have a constant gray value, the binarized imprinted portion differs depending on the threshold value. FIG. 22 (ne) represents the situation in a pseudo manner. FIG. 22 (ne) shows the outlines of the multi-grayscale grayscale image of the character “upper” read by the scanner and binarized with four threshold values. It is set. As described above, since the imprint changes greatly depending on the setting of the threshold value, the effect of the setting of the threshold value is large when performing the seal collation using the matching / unmatched color classification display method.

  Therefore, in the sixth embodiment, the threshold value is not uniquely determined, and the threshold value is automatically changed in a time period, and the display by the “coincidence / inconsistency color classification display method” at each threshold value is performed.

  FIG. 23 is a block diagram showing a sixth embodiment of the seal collation apparatus of the present invention.

  In the sixth embodiment, blocks having the same functions as those in the first embodiment are assigned the same numbers, and only blocks different from the first embodiment in the sixth embodiment will be described in detail.

  In FIG. 23, a registration mark holding unit 2, a check mark holding unit 3, a threshold generation unit 51, a binarization processing unit 54, an imprint color conversion unit 55, a periodic signal generation unit 57, and a display control unit 7 are provided.

  The threshold generation unit 51 first calculates an initial threshold, and when receiving a signal from the periodic signal generation unit 57, the threshold generation unit 51 increases or decreases the initial threshold, periodically changes the threshold, and binarizes the resultant threshold. Output to. As the initial threshold value calculation method, a method conventionally known as a threshold value calculation method is used. For example, a method of obtaining a density histogram based on the number of pixels for each pixel value and using a pixel value that is a minimum value of the histogram is used. is there. In addition, the method of increasing / decreasing from the initial threshold is, for example, firstly incremented by a constant value up to the maximum value of the pixel value, and when reaching the maximum value, this is sequentially decremented by a certain constant value, and again when reaching the minimum value. Take a way to increase. In another method, instead of increasing or decreasing by the above-mentioned constant value, it is also possible to take a method in which the value to be increased or decreased within the range in which the imprint pixel values are distributed is reduced from the previous histogram and finely changed. Is possible.

  The binarization processing unit 54 binarizes the seal stamp of the collation stamp according to the threshold value output from the threshold value generation unit 51 and outputs the resulting binary image to the seal color conversion unit 55.

  The seal color conversion unit 55 uses different colors for the seal of the registered seal stamp and the seal of the collated seal stamp binarized by the binarization processing unit 54, as described above for the “matching / unmatched color classification display method”. And the portion where the two imprints overlap is further converted into a different color. For example, the seal stamp of the registered seal stamp is converted to red, the seal stamp of the collated seal stamp is converted to green, and the color of the overlapping portion is converted to yellow. These color conversions may be performed for each pixel while examining whether the pixel is one of the imprints or both. As another method, the imprint of the registered seal stamp image is converted to red (color data value is 100 in binary), and the seal stamp image of the collated seal stamp is green (color data value is 010 in binary). When the bit OR processing of the two images after conversion is performed, the overlapping portion is converted to yellow (the color data value is 110 = 100 OR 010 in binary). The seal color is converted in this way, and the resulting seal color image is output to the display control unit 7.

  The periodic signal generator 57 generates a signal at regular time intervals and outputs the signal to the threshold generator 51 to notify the timing when the threshold generator 51 changes the threshold.

  FIG. 24 is a flowchart showing the operation of the sixth embodiment of the present invention. In the sixth embodiment, steps having the same functions as those in the first embodiment are assigned the same numbers, and steps different from those in the first embodiment in the sixth embodiment will be described in detail.

  As in the first embodiment, first, the seal collation determiner reads out the registered seal imprint to the registered seal holding unit 2 (step 1) and stores the collated seal imprint in the collated seal holding unit 3. (Step 2).

  Here, in the sixth embodiment, a black and white binary image is used for the seal of the registered seal, and a multi-tone gray scale image is used for the seal of the collated seal.

  Therefore, as described above, the threshold value generating unit 51 creates a density histogram of the impression of the collated seal, and calculates an initial threshold value for binarization from this histogram (step 61).

  Next, it is determined whether or not a signal is generated from the periodic signal generator 57 at regular time intervals (for example, 300 millisecond intervals). If a periodic signal has been generated, the process proceeds to step 64, and if no periodic signal has been generated, the process proceeds to step 63 (step 62).

  First, the process when no periodic signal is generated in step 62 will be described. The threshold generation unit 51 first outputs the initial threshold calculated in step 61 to the binarization processing unit 54, and the binarization processing unit 54 stores the multi-tone grayscale image stored in the collation mark holding unit 53. Is binarized with this initial threshold value, and the resulting binary image is output to the imprint color converter 55 (step 64).

  Next, processing when a periodic signal is generated in step 62 will be described. The periodic signal is sequentially output to the threshold generator 51. Upon receiving this signal, the threshold generator 51 calculates a new threshold by increasing or decreasing the initial threshold as described above, and outputs the resulting threshold to the binarization processor 54 (step 63).

  The binarization processing unit 54 binarizes the imprint of the multi-tone grayscale image stored in the collated mark holding unit 53 with the new threshold value converted, and outputs the resulting binary image to the imprint color conversion unit 55. (Step 64).

  The imprint color conversion unit 55 receives the binarized imprint of this collated seal stamp and the imprint stored in the registered stamp holding unit 52, and converts the color of each imprint portion and the portion where the imprint overlaps. Then, the resulting color image is output to the display controller 7 (step 65). The display control apparatus displays this color image on the CRT (step 66).

  In step 34, it is determined whether or not there is an instruction to end the display of the seal impression. If it is to be ended, the process is ended. If not, the process proceeds to step 62.

  This series of operations is repeated at a constant time interval, and each time the repetition is repeated, the binarization threshold value of the collated seal stamp changes continuously, and as a result, the imprint of the collated seal stamp is binarized. Therefore, the overlapping part of the registered seal stamp and the binarized seal stamp of the collated seal stamp is changed, and a display in which the color-converted area is changed every certain time is performed.

  In the sixth embodiment, the method of displaying the seal stamp of the registered seal stamp and the seal stamp to be verified using different colors or stripe patterns as display forms has been described. However, the present invention is not limited to colors and patterns, and both seal stamps are displayed. Any display form that can be distinguished may be used. In addition, although the binarization processing of the seal stamp of the collated seal stamp is performed with different threshold values, the seal stamp of the registered seal stamp or both of the seal stamps may be binarized with different threshold values.

<Effect of the sixth embodiment>
As described above, the periodic signal generating unit 57 is provided, and the binarization threshold value is automatically changed continuously, and the impression of the collated seal is binarized every time with respect to the continuously changing threshold value. By using the match / mismatch color-coded display method, there is no need to calculate or set the optimum value of the binarization threshold, and the change in the density of the imprint in the multi-tone grayscale image does not match. This is reflected as a continuous change in the color-coded display, and there is an effect that the influence of vermilion sticking, uneven stamping, etc. can be inferred from the display, and the influence can be taken into account in the judgment of seal verification.

  Of course, the first to sixth embodiments of the present invention can be implemented in any combination.

It is a block diagram which shows 1st Embodiment of the stamp collation apparatus of this invention. It is a flowchart which shows operation | movement of the seal | sticker collation apparatus of 1st Embodiment. It is a figure explaining the continuity verification method by cutting | disconnection synthesis | combination. It is a figure (a straight line, a cross) explaining the production | generation method of a cutting mask. It is a figure (circle) explaining the production | generation method of a cutting mask. It is a figure (L shape) explaining the production | generation method of a cutting mask. It is a figure (curve) explaining the production | generation method of a cutting mask. It is a figure explaining the cutting | disconnection synthesis | combination of the reverse imprint in 2nd Embodiment. It is a block diagram which shows 2nd Embodiment of the stamp collation apparatus of this invention. It is a flowchart which shows operation | movement of the seal | sticker collation apparatus of 2nd Embodiment. It is a figure (1) which shows the example of the reversal imprint including translation and cutting composition. It is a figure (2) which shows the example of the reverse imprint including translation and cutting composition. It is a figure (1) which shows the example of the reverse imprint including rotation and cutting composition. It is a figure (2) which shows the example of the reverse imprint including rotation and cutting composition. It is a block diagram which shows 3rd Embodiment of the stamp collation apparatus of this invention. It is a flowchart which shows operation | movement of the seal | sticker collation apparatus of 3rd Embodiment. It is a figure explaining the automatic movement of a cutting position. It is a block diagram which shows 4th Embodiment of the stamp collation apparatus of this invention. It is a flowchart which shows operation | movement of the seal | sticker collation apparatus of 4th Embodiment. It is a block diagram which shows 5th Embodiment of the seal | sticker collation apparatus of this invention. It is a flowchart which shows operation | movement of the seal | sticker collation apparatus of 5th Embodiment. It is a figure explaining the coincidence mismatch color classification display method. It is a block diagram which shows 6th Embodiment of the stamp collation apparatus of this invention. It is a flowchart which shows operation | movement of the seal | sticker collation apparatus of 6th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cutting position control part 11 Cutting position control part 21 Cutting position control part 31 Cutting position control part 2 Registration mark holding part 3 Checked mark holding part 4 Cutting pattern generation part 5 Cutting mask generation part 6 Imprint selection output part 16 Imprint selection output Unit 7 display control unit 18 imprint inversion unit 28 periodic movement generation unit 41 switching signal generation unit 44 imprint switching unit 45 imprint enlargement unit 47 enlargement display instruction unit 51 threshold generation unit 54 binarization processing unit 55 imprint color conversion unit 57 period Signal generator.

Claims (6)

Registered seal storage means for storing the seal of the registered seal,
Checked seal storage means for storing the seal stamp of the verified seal;
An enlarged display instruction means for outputting enlarged display information indicating an instruction to enlarge or non-enlarge and display the seal of the registered seal and the seal of the collated seal;
In the case of the enlarged display and the non-enlarged display, each of the enlarged display switching signal and the non-enlarged display switching signal for generating a switching signal at an arbitrarily determined time period, and the enlarged display information is the enlarged display Switching signal generating means for setting the switching signal to the enlarged display switching signal, and when the enlarged display information is the non-enlarged display, the switching signal is set to the non-enlarged display switching signal;
Based on the enlarging display switching signal or the non-enlarging display switching signal, the imprint of the registered seal stamp and the imprint of the collated seal stamp are switched, and either the imprint of the registered seal stamp or the imprint of the collated seal stamp is used as a switching imprint. Imprint switching means for outputting;
In the case where the enlarged display information is the enlarged display, an imprint enlargement means for enlarging the switching imprint to an arbitrary size,
A seal collation apparatus comprising display means for alternately outputting the enlarged switching impression or the switching impression according to a time period of the switching signal.
Registered seal storage means for storing the seal of the registered seal,
Checked seal storage means for storing the seal stamp of the verified seal;
Periodic signal generating means for generating a threshold change signal at an arbitrary time period;
A threshold generation means for calculating an initial threshold and calculating a change threshold so as to repeat the increase and decrease of the threshold by changing the initial threshold based on an arbitrary increase / decrease value upon receiving the threshold change signal;
Binarization processing means for continuously binarizing the seal stamp of the collation stamp based on the initial threshold or the change threshold to create a binary image;
First color conversion means for converting the seal stamp of the registered seal stamp and the seal stamp of the checked seal stamp binarized based on the change threshold;
The part of the registered seal stamp and the seal of the collated seal stamp, which are converted into the different display forms by the first color conversion means, respectively, and the part of the registration seal stamp and the part of the collated seal stamp overlap or do not overlap Second color conversion means for converting the image into a different display form;
A seal collation apparatus, comprising: a display means for outputting an imprint of the registered seal stamp that has been converted to the further different display form by the second color conversion means and a seal impression of the collated seal stamp.
  3. The seal collation apparatus according to claim 2, wherein the binarization processing unit binarizes the seal image of the registered seal stamp to create a binary image, and the first color conversion unit imprints the seal stamp of the collated seal stamp. And a seal stamping apparatus for converting the seal stamp of the registered seal stamp binarized based on the change threshold value into different colors.   4. The seal stamp verification apparatus according to claim 2, wherein the display form is displayed with a color or a pattern. About stored seals of registered seals and verified seals ,
An enlarged display instruction means for performing an enlarged display instruction process for outputting enlarged display information representing an instruction to enlarge or non-enlarge and display the seal of the registered seal and the seal of the collated seal;
Switching signal generating means, if the enlargement display information of the enlarged display is to generate the enlarged display switching signal at time periods in the case of enlarged display, when the enlarged display information of the non-enlarged display is non enlarge Performing a switching signal generation process for generating a non-enlarged display switching signal in a time period of the case ,
An imprint switching means switches the imprint of the registered seal stamp and the imprint of the collated seal stamp on the basis of the enlarged display switching signal or the non-enlarged display switch signal, and either the imprint of the registered seal stamp or the imprint of the collated seal stamp A step of performing an imprint switching process for outputting k as a switching imprint;
An imprinting means for performing an imprinting process for enlarging the switching imprint to an arbitrary size when the enlarged display information is the enlarged display;
Seal collation method by the display means, characterized by having a <br/> and performing a display process of outputting the switching imprint or the switching imprint was the expanded alternately according to the time period of the switching signal.
About stored seals of registered seals and verified seals ,
A periodic signal generating means for performing a periodic signal generating process for generating an arbitrary time period threshold change signal;
A step of performing threshold generation processing for calculating a change threshold so that the threshold generation means calculates an initial threshold and, upon receiving the threshold change signal, changes the initial threshold based on an arbitrary increase / decrease value and repeats the increase and decrease of the threshold. When,
A step of performing binarization processing in which binarization processing means binarizes the imprint of the collated seal stamp continuously in the time period based on the initial threshold or the change threshold; and
Performing a first color conversion process in which the first color conversion means converts the seal stamp of the registered seal stamp and the seal stamp of the collated seal stamp binarized based on the change threshold to different display forms;
A second color conversion unit superimposes the seal of the registered seal stamp and the seal of the collated seal stamp converted into the different display forms by the first color converting unit, respectively, and imprints of the registered seal stamp and the collated seal stamp Performing a second color conversion process for converting the overlapping part or the non-overlapping part into a different display form;
Performing a display process of outputting an imprint in which the seal of the registered seal stamp and the seal of the collated seal stamp that have been converted into the further different display form by the second color converting means are superimposed on each other. A seal verification method.

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