JPS5962983A - Collating device of seal impression - Google Patents

Abstract

PURPOSE:To collate a seal impression surely by synthesizing a combinational picture on the screen of a CRT on a basis of picture data of the seal impression to be collated and a reference seal impression and each partition set data. CONSTITUTION:The seal impression to be collated is converted to a picture by a camera device 5 and is sent to a picture memory 10 of a picture processing device 7. The reference seal impression picture stored in an external memory 6 is sent to the memory 10 also. Data of both pictures are taken into the memory 10, and data are read out from the memory 10 by a CPU12 and are sent to a display circuit 18. The reference seal impression and the seal impression to be collated are displayed on both sides of partitions having a certain angle and the combinational picture which is formed by overlapping of both seal impressions is displayed on the inside of them on the screen of a CRT18. Further, the inked part of the reference seal impression, the inked part of the seal impression to be collated, their background parts, and the overlapped seal impression part are displayed in red, blue, white, and purple respectively, and the inclination of partitions is changed by the operation of a keyboard 23.

Description

[Detailed Description of the Invention] <Technical Field of the Invention> The present invention provides a seal verification device that reads a stamp imprint to be verified stamped on a check, etc., converts it into an image, and compares it with an image of a reference seal imprint stored in a storage unit in advance. In particular, the present invention relates to a seal matching device that displays each image of a seal impression to be compared and a reference seal impression on the screen of a display means and visually compares the images of the two river shadows to determine the authenticity of the seal impression to be compared. .

<Background of the Invention> Conventionally, stamps affixed to securities such as checks and bills,
As a method for determining the authenticity of a used seal, for example, institutions such as banks use a method of marking. First, the securities are folded in the center of the stamped area, half of the stamp to be verified is folded to the back side, and the other half is left on the front side. Next, the remaining half of the seal impression to be verified is superimposed on the corresponding portion of the reference seal impression registered in advance, and both seal impressions are combined via a fold line.

Then, regarding the combined seal impression, the state of connection between the two seal impressions at the broken line portion is observed, and the presence or absence of a fault between the strokes is checked.

However, this type of method requires manual labor, which takes a considerable amount of time and effort to determine authenticity, lowers work efficiency, and tends to cause errors in the overlapping of seal impressions, leading to erroneous judgments. ing.

On the other hand, there is also a method of displaying the images of the seal imprint to be verified and the reference imprint side by side on the screen of a cathode ray tube, and comparing the images on the screen to determine the authenticity of the imprint to be verified. However, in this method, the only way to distinguish between the two is based on the overall impression of the seal, and it is difficult to compare the details of the strokes, which reduces the accuracy of determining authenticity.

<Object of the Invention> The present invention provides a novel method that is efficient and can realize detailed comparison and verification of seal impressions by combining and displaying both sides of the seal impression to be compared and the reference seal impression on the screen of a display means. The purpose of this invention is to provide a seal verification device.

<Structure and Effects of the Invention> In order to achieve the above object, the present invention aligns the seal imprint to be compared imaged with a camera device and the reference seal imprint stored in data in advance, and then aligns both seal imprint images and data stored in advance. Based on the two partition line setting data, each seal imprint image is displayed on both sides of the screen of the display means via the partition line, and both seal imprint images are superimposed and displayed on the inside of the screen, thereby creating a combined image. It was configured to be synthesized.

According to the present invention, it is possible to automatically display a combined image of a verified seal impression and a reference seal impression on the screen of the display means by key operation, etc., and it is possible to streamline the process of determining the authenticity of a seal, and further, by observing the combined image. , Image 1 in the entire image or the partition line part
By checking the connection state of the elephants, it is possible to compare and match the details of the seal imprint, and improve the accuracy of determining the authenticity of the seal.

<Description of Embodiments> FIG. 1 shows an example of a device for determining whether a stamp stamped on a check is a genuine stamp or a forged stamp.

In the illustrated example, a plurality of checks 2 are stacked and stored in a box-like case 1, and the checks located at the bottom of the case 10 are taken out one by one and sent onto a conveyor belt 3. In the middle of the conveyance path along the conveyor belt 3, there are a reading device 4 that reads the code number printed on the check 2 using an optical or magnetic method, and a camera device 5 that images the stamp imprinted on the check 2. The output of the reading device 4 is sent to an external memory 6 and the output of the camera device 5 to an image processor 7 via a data bus 8. A plurality of reference seal impressions are data stored in the external memory 6, and based on the code number read by the reading device 4, image data of the corresponding reference seal impression is extracted and sent to the image processor 7.

The image processor 7 is provided with a program memory 9 that stores programs necessary for seal imprint matching shown in FIG. 6, and each image of the verified seal imprint and the reference seal imprint, and is used for processing such as alignment of both seal imprint images. It is composed of an image memory 10 and an arithmetic control unit (hereinafter simply referred to as CPU) that executes various calculations and processes such as reading data from the image memory, decoding and executing programs, and displaying images on the display means 11. Furthermore, based on the authenticity determination of the seal imprint, the output device 13 operates the sorting device 14 to collect checks with authentic seals, checks with forged seals, and unidentifiable checks. Case 15, 16
．． Allocate to 17.

The display means 11 is, for example, a color cathode ray tube consisting of 256-bit pixels each in the vertical and horizontal directions, and on its screen, as shown in FIG. A combined image consisting of a reference seal imprint 20 and a to-be-verified seal imprint 21 on both sides of the lines 19A and 19B, and a superimposed seal imprint 22 of both seal imprints on the inside thereof, is displayed. In the case of the illustrated example, the vermilion part of the reference seal impression is represented in red, the vermilion part of the verified seal imprint is represented in blue, the background part of both seal impressions is represented in white, and furthermore, the part where the vermilion parts of the superimposed seal impression 22 overlap is represented in purple. Furthermore, the inclination angle θ of the partition lines 19A and 19B can be changed arbitrarily by operating the keyboard 23.

FIG. 3 shows the keyboard 23, with partition lines 19A and 19B.
An angle setting switch 24 for variably setting the inclination angle θ in 1° increments within the range of 00 to 360°, and "true", "false", and "hold" for inputting the authenticity determination result of the seal. 3
Species keys 25, 26, and 27.

FIG. 4 shows an example of the circuit configuration of the display circuit 180.

In the figure, an oscillation circuit 28 outputs a basic clock. The display control circuit 29 controls the display operation on the display means 11, and includes a scanning circuit that obtains a basic clock and outputs horizontal and vertical synchronization signals, and a scanning circuit that detects the current scanning position on the horizontal scanning line 256.
Includes advance counter, etc. Mask table 30A.

30B stores data for setting each of the partition lines 19A and 19B. In this example, the tilt angle is 0° to 36°.
A total of 360 pieces of partition line setting data for each angle of 1° in the 0° range are stored in each mask table 30A, 30B.

In Fig. 5 (t1), each partition line setting data with an inclination angle θ of 15° is shown at t21. Each partition line setting data includes partition lines 19A, 256 lines in each horizontal scanning line,
The 8-bit code indicates whether 1913 is located at the previous bit. For example, in the first horizontal scanning line, the partition lines 19A and 19B are located at the 95th and 105th bits, so The 8-bit code is r 01011111J "01101001"
It will be like this. Similarly, each partition m19A is applied to all horizontal scanning lines.

The position of 19B is represented by an 8-bit code, and therefore the shape of the partition lines 19A and 19B is strictly stepped, as shown in FIG.

The comparison circuits 31A and 31B are the data output of the 256-decimal counter and the mask table 30A.

30B is compared with each partition line setting data, and a match between both data is detected. In addition, each flip-flop 32A, 32B
are set at the start of horizontal scanning, and the comparison circuits 31A and 31A, respectively,
The gate circuit 33 is controlled to open and close by the Q output of the flip-flop 32B and the Q output of the flip-flop 32A, thereby selecting the seal image to be displayed on the display means 11. Then it switches. That is, in the gate circuit 33, the data of the reference seal imprint image is inputted to the AND circuit 34, and the data of the verified seal imprint image is inputted to the other AND circuit 35 from the image memory 10 via shift registers 36 and 37. The outputs of the AND circuits 34 and 35 are input to a NOR circuit 38. Therefore, when the Q output of the flip-flop 31B is in the state of logic "1" and logic "L" data representing the vermilion part of the reference seal is input to the AND circuit 34, the AND circuit 34 outputs a red signal of logic "1". 1(
Output.

Furthermore, when data of logic "0" representing the background part is input to the AND circuit 34, the outputs of both AND circuits 34 and 35 become logic "0", so the NOR circuit 38 outputs the white signal W of logic "1". Output. Similarly, when the q output of the flip-flop 32A is in the state of logic "1", when data of logic "1" representing the vermilion part of the stamp to be verified is input to the AND circuit 35, the AND circuit 35 outputs the logic "1". Blue signal B
, and when logic "0" data representing the background part is input, the outputs of both AND circuits 34 and 35 become logic "0".
0'', and the NOR circuit 38 outputs a white signal W of logic ``1''.

The display control circuit 29 receives red, blue, and white signals,
Display means 11 based on horizontal synchronization signal and vertical synchronization signal
A reference seal imprint image 20 is displayed on the screen via the partition lines 19A' and 19B, from the left end of the screen to the partition line 19B, the vermilion part is red and the background part is white, and from the partition line 19A to the right end of the screen, the vermilion part is The checked seal impression image 21 is displayed in blue with a white background, and a superimposed image 22 is displayed inside the partition lines 19A and 19B with a purple overlapped part of the vermilion parts to synthesize a combined image. (Figure 2).

FIG. 6 shows the operation flow of the seal verification device.

First, in step 41, the stamp to be verified stamped on the check 2 is converted into an image by the camera device 5, and data is stored in the image memo IJ 10 of the image processor 7. Next, in step 42, data of the corresponding reference seal imprint image is read out from the external memory 6 based on the code number of the check 2 read by the reading device 4, and similarly stored in the image memory 10. Finally, in step 43, the CPU 12 detects the positional deviation between each seal imprint image as a parallel movement amount and a rotation angle, and in the next step 44, the image data is coordinate-transformed based on these detected amounts, and the two seal imprint images are aligned. Do the following.

Thus, in the next step 45, the angle setting switch 24 is operated to set the partition line 19A.

When the tilt angle θ of 19B is set, the CPU 12 sets each mask table 30 corresponding to the tilt angle θ in step 46.
Specify the addresses A and 30B to read out the partition line setting data respectively, and in step 47 display circuit 1
8 is operated to display the above-mentioned combined image on the screen of the display means 11 based on the data of both seal imprint images and each partition line setting data. When the scanning of one screen is completed, the judgment in step 48 becomes 'YES', and the operator observes the color tone etc. of the superimposed image 22 between the partition lines 19A and 19B for the entire image, and for comparison between the seal impressions. For example, in Fig. 2 (1), the vermilion part in the superimposed image 22 is purple in tone, and only red appears in the surrounding area. The seal impression is judged to be "authentic." On the other hand, in Figure 2 (2), the vermilion part in the superimposed image 22 is purple.

The three colors red and blue are mixed, and in this case, the verified seal impression is determined to be a "counterfeit." When similar observation is performed along several partition lines 19A, 19]3 with different inclination angles θ, the judgment in step 4 becomes ``YES'' by changing the angle setting switch 24, and the process returns to step 46. Partition line data corresponding to the inclination angle is read out, and combined images with different combination states are displayed on the screen of the display means 11 (step 47).

” - As a result of the verification operation, if the operator determines that the stamp to be verified is a genuine seal, press the “True” key 25; if the operator determines it to be a counterfeit seal, press the “False” key 26; if the operator cannot determine the seal, press the “False” key 26; When the "Hold" key 27 is pressed, the determination in step 50, "Is the 1 determination complete?" becomes == YES, and the CPU 12 operates the sorting device 14 and transfers the check 2 to the corresponding collection cases 15, 16. .17, and the determination result is recorded in a predetermined area of the image memory 10 in step 51.If there is another check 2 to be stamped, the determination in step 52 becomes "YES" and the process returns to step 51. The process returns to step 41, and the same matching process ψ is not executed.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the seal verification device according to the present invention; Fig. 2 is an explanatory diagram showing an example of a combination image displayed on [21] [21 is double-sided]; and Fig. 3 is an explanatory diagram showing the keyboard. FIG. 4 is a block diagram showing the structure of the display circuit, FIG. 5 is an explanatory diagram showing the relationship between partition line setting data, and FIG. 6 is a flowchart showing the seal imprint matching operation. 5...Camera device 6...Out!Memo IJ9...Calculation control unit 10...Image memo 1/11...Display means 18 ...
... Display circuit 19A, 1913 ... Partition line 20 ... Reference seal imprint image 21 ... Verified seal imprint image 22 ... Superimposed image 29 ... ...Display control circuit 3 Control 2 (Fig. 0) ltl 72 2'1te 20 (2) 2ν 2d 2/

Claims (1)

[Claims] ■ A camera device that images the seal imprint to be verified, a first storage unit that stores data of the reference seal imprint image, and a second storage unit that takes in data of the Ryogawa shadow image and aligns the images. a storage unit, a display means for displaying each seal imprint image on both sides thereof via two partition lines, and displaying both river shadow images side by side on the inside, and data for setting the two partition lines. A seal collation device comprising: a third storage section for storing the I) iJ combination image on the screen of the display means based on the Ryokawa shadow image and each partition line setting data. (1) The display means divides the vermilion parts of the verified seal imprint and the reference seal imprint and the background part of the double-use shadow into three types (11 colors) and displays the overlapping vermilion parts in a mixed color.Claim 1 The seal verification device described. (2) The seal verification device according to claim 1, wherein the third storage section stores a plurality of partition line setting data having different inclination angles.