JP7040902B2 - Certificate verification device, certificate verification method and certificate verification program - Google Patents

Description

The present invention relates to a certificate verification device, a certificate verification method, and a certificate verification program for supporting the determination of authenticity of a certificate such as a driver's license.

If identity verification is required, we may check the identity verification materials presented by the service user. In this case, a technique for determining the authenticity of the identity verification material from the identity verification material or the image data of a copy thereof is also being studied (see, for example, Patent Document 1). In the technique described in this document, the image analysis unit analyzes the character string and the layout of the image in the scanned image data of the identity verification material or a copy thereof. The OCR engine recognizes the character string or image. The authenticity determination processing unit collates the analysis result and the recognition result with the authenticity determination logic template relating to the layout of the characters and images described in the identity verification material, and determines the authenticity of the identity verification material.

Further, a technique for cutting out a character image of each character forming a serial number printed on paper such as banknotes and reading the serial number is also being studied (see, for example, Patent Document 2). The paper leaf serial number reading system described in this document uses the paper leaf image to read the serial number assigned to the paper leaf. In this case, the paper leaf image of the paper leaf transported by the paper leaf transport unit is acquired, and the type of the paper leaf is identified by using the paper leaf image. Based on the type of paper leaf identified by the paper leaf identification sensor unit, the character image of each digit of the serial number is cut out from the paper leaf image based on the number cutting condition with reference to the storage unit, and the character font is identified. Character recognition of each character image is performed using the corresponding template data based on the information.

Japanese Unexamined Patent Publication No. 2011-178575 International Publication No. 2013/140563

In each of the above patent documents, the authenticity of a medium such as an identity verification material or a banknote is determined based on a character image. However, in Patent Document 1, it is necessary to print the identity verification material based on the authenticity determination logic. Further, in Patent Document 2, banknotes are printed collectively at the Printing Bureau, but a driver's license or the like is printed and issued in a plurality of areas. In this case, the characteristics of the character font used for the certificate may differ depending on the region. Therefore, it is not possible to accurately determine the authenticity of the certificate.

The certificate verification device that solves the above problems is subject to verification from the pattern information storage unit that records the registered character patterns of the characters included in the certificate and the image generation unit in relation to the certificate issuance area and issuance period. An image acquisition unit that acquires an image of a certificate, a character recognition unit that recognizes characters contained in the image, a character verification unit that specifies a character pattern to be used using the image of the certificate, and character recognition of the image. Based on the result, the registered character pattern associated with the issuance area and the issuance time of the certificate is acquired from the pattern information storage unit, and it is determined whether or not the used character pattern and the registered character pattern match. It is equipped with a judgment support unit.

According to the present invention, it is possible to support an efficient determination of the authenticity of a certificate such as a driver's license.

Explanatory drawing of the certificate verification apparatus of 1st Embodiment. It is explanatory drawing of the storage part of 1st Embodiment, (a) is the dictionary storage part, (b) is the pattern information storage part, (c) is the explanatory drawing of the reevaluation information storage part. Explanatory drawing of the processing procedure of 1st Embodiment. Explanatory drawing of the processing procedure of 1st Embodiment. It is explanatory drawing of 2nd Embodiment, (a) is the pattern information recording part, (b) is explanatory drawing of the processing procedure.

(First Embodiment)
Hereinafter, an embodiment in which the certificate verification device, the certificate verification method, and the certificate verification program are embodied will be described with reference to FIGS. 1 to 4. In this embodiment, it is assumed that the authenticity (validity) of the driver's license as a certificate is determined. Here, a user terminal 10 and a verification support server 20 that communicate via a network are used.

The user terminal 10 is a computer terminal (client terminal) used by a person in charge of confirming a driver's license.
The user terminal 10 includes a control unit 11, an input unit 12, an output unit 13, and a camera 14.

The control unit 11 executes a process of controlling the input unit 12 to the camera 14.
The input unit 12 is composed of, for example, a keyboard and a pointing device, and is a device for inputting various information. The output unit 13 is composed of, for example, a display or the like, and is a device for outputting various information acquired from the verification support server 20. In the user terminal 10 such as a smart phone or a tablet terminal, the touch panel display may be made to function as an input unit 12 and an output unit 13.
The camera 14 functions as an image generation means for generating a photographed image of a certificate (in this embodiment, a driver's license).

The verification support server 20 is a computer system (certificate verification device) that supports confirmation of the validity of a certificate. The verification support server 20 includes a control unit 21, a dictionary storage unit 22, a pattern information storage unit 23, and a re-evaluation information storage unit 24.

The control unit 21 includes control means (CPU, RAM, ROM, etc.) and performs processes described later (each process such as an image acquisition step, a character recognition step, a character verification step, and a determination step). By executing the certificate verification program (application) for that purpose, the control unit 21 functions as an image acquisition unit 211, a character recognition unit 212, a character verification unit 213, and a determination support unit 214.

The image acquisition unit 211 executes a process of acquiring a captured image from the camera 14.
The character recognition unit 212 executes a process of recognizing characters included in the captured image.
The character verification unit 213 executes a process of verifying a pattern based on a character image.
The determination support unit 214 executes a process of determining the validity of the certificate. The determination support unit 214 holds data on the commonality determination ratio for determining the commonality of the pattern codes included in the certificate to be verified, and the confirmation determination reference value for proposing a review of the character pattern. .. Further, the determination support unit 214 functions as an output unit that outputs information regarding the validity of the certificate.

As shown in FIG. 2A, the dictionary management record 220 for identifying the verification target character included in the certificate is recorded in the dictionary storage unit 22. The dictionary management record 220 is recorded when a feature relating to the form of characters used in the certificate is registered. Data related to the verification target character, the morphological feature, and the pattern code are recorded in the dictionary management record 220.

Data related to the character (text) to be verified is recorded in the verification target character data area.
In the morphological feature data area, data relating to the morphological features of the character to be verified is recorded. As the characteristics in the form, the font type and the characteristics of the shape of the partial morphological elements constituting the character are used. For example, when a character contains a morphological element (for example, a stroke "dot"), the distance and arrangement relationship with other strokes are used. Further, the shape (straight line or curve) of the vertical line portion (for example, the stroke "vertical") of the character to be verified and the aspect ratio of the character are patterned and used as morphological features.

In the pattern code data area, data regarding an identifier for specifying a pattern regarding the form of the character to be verified is recorded. In the present embodiment, the same pattern code is assigned to different verification target characters that may be included in one certificate for a plurality of verification target characters.

As shown in FIG. 2B, a pattern management record 230 for determining a certificate is recorded in the pattern information storage unit 23. This pattern management record 230 is recorded when a character pattern used in a certificate is registered. Data regarding the delivery period, the delivery area, and the pattern code (registered character pattern) are recorded in the pattern management record 230.

In the issuance period data area, data regarding the time (period) when the certificate was issued is recorded. Here, the range of the issuance time when the driver's license was issued is used.
The delivery area data area records data about the area to which the certificate was issued. Here, the area under the jurisdiction of the Public Safety Commission that issued the driver's license is used.

In the pattern code data area, data regarding an identifier for specifying a registered character pattern, which is a morphological feature of characters used in the delivery area during this delivery period, is recorded.

As shown in FIG. 2 (c), the re-evaluation management record 240 for confirming the registered character pattern is recorded in the re-evaluation information storage unit 24. This re-evaluation management record 240 is recorded when a genuine certificate that does not correspond to the registered character pattern is detected. In this re-evaluation management record 240, data regarding the delivery time, the delivery area, the verification target character, the pattern code, and the representative pattern code are recorded.

In the issuance time data area, data regarding the time when a genuine certificate that does not correspond to the registered character pattern is delivered is recorded.
The delivery area data area records data about the area to which this certificate was issued.

Data related to the characters contained in this certificate is recorded in the character data area to be verified.
In the pattern code data area, data relating to an identifier for identifying a pattern relating to the form of the character to be verified is recorded.
In the representative pattern code data area, data related to the pattern code of the verification target character included in this certificate, which is equal to or higher than the commonality determination ratio, is recorded.

(Certificate verification process)
Next, the processing procedure of the certificate verification process will be described with reference to FIGS. 3 and 4.
First, the control unit 21 of the verification support server 20 executes the acquisition process of the certificate image (step S1-1). Specifically, the person in charge photographs a driver's license (driver's license to be verified) whose authenticity (validity) is desired to be confirmed by using the camera 14. In this case, the image acquisition unit 211 of the control unit 21 acquires a captured image from the camera 14.

Next, the control unit 21 of the verification support server 20 executes a character identification process included in the certificate image (step S1-2). Specifically, the character recognition unit 212 of the control unit 21 specifies a character image area included in the captured image of the driver's license, and performs character recognition for each character image area. Then, the character recognition unit 212 identifies the characters printed on the driver's license by pattern recognition. Here, as driver's license items, the name, address, number, Public Safety Commission name, expiration date display, license classification (green, blue, gold (excellent driver's license)), etc. are specified.

Next, the control unit 21 of the verification support server 20 executes the verification target character specifying process (step S1-3). Specifically, the character verification unit 213 of the control unit 21 specifies the verification target character in the recognition character group. If the recognition character group contains multiple verification target characters, specify all verification target characters. In the present embodiment, the characters constituting the display character of the expiration date are specified as the verification target characters.

Next, the control unit 21 of the verification support server 20 executes the specification processing of the character pattern used for the verification target character for each of the specified verification target characters (step S1-4). Here, the character pattern used, which is a morphological feature of the character used in the driver's license for determining authenticity (validity), is specified. Specifically, the character verification unit 213 of the control unit 21 cuts out a character image of the verification target character extracted from the driver's license image. Then, the character verification unit 213 uses the dictionary storage unit 22 to compare the morphological characteristics of the verification target character recorded in the dictionary management record 220 with the cut out character image, and identifies the pattern code having the closest morphological characteristics. do. Then, the character verification unit 213 temporarily stores the specified pattern code in the memory in association with the verification target character.

As shown in FIG. 4, for the character "valid until 2018" of the display character 501 of the expiration date of the driver's license 500, the characters "flat" to "effective" are specified as the verification target character group, respectively. Then, it repeats until the specification of the pattern code for all the verification target characters is completed. Here, the pattern code 502 of "A" to "C" is specified corresponding to the characters "flat" to "effect".

Next, the control unit 21 of the verification support server 20 executes a determination process as to whether or not the pattern codes are common (step S1-5). Specifically, the determination support unit 214 of the control unit 21 extracts the pattern codes of all the verification target characters temporarily stored in the memory. Then, the determination support unit 214 determines that the pattern codes are common when the pattern codes of the characters to be verified match at a commonality determination ratio or higher. In the pattern code 502 shown in FIG. 4, "A" is one, "B" is two, "C" is six, and 60% (commonness determination ratio) or more is "C". The pattern code is determined to be common. Then, a pattern code (here, “C”) having a commonality determination ratio or more is specified as a representative pattern code.

When it is determined that the pattern codes are composed of the commonality determination ratio or more and the pattern codes are common (when "YES" in step S1-5), the control unit 21 of the verification support server 20 specifies the delivery time and the delivery area. The process is executed (step S1-6). Specifically, the determination support unit 214 of the control unit 21 specifies the delivery area based on the name of the Public Safety Commission of the driver's license to be verified.

Next, the control unit 21 of the verification support server 20 executes the process of specifying the delivery time and the registered character pattern of the delivery area (step S1-7). Specifically, the determination support unit 214 of the control unit 21 specifies the issuance time and the issuance area from the driver's license item. Then, the determination support unit 214 acquires the pattern management record 230 including the delivery time and the delivery area from the pattern information storage unit 23. Then, the pattern code recorded in the pattern management record 230 is specified as the registered character pattern.

As shown in FIG. 4, in the case of a driver's license, the issuance time 504 is calculated based on the display of the expiration date and the validity period according to the license classification. Furthermore, the grant area 505 is specified based on the name of the Public Safety Commission.

Next, the control unit 21 of the verification support server 20 executes a determination process as to whether or not the registered character pattern matches (step S1-8). Specifically, the determination support unit 214 of the control unit 21 compares the representative pattern code with the pattern code recorded in the pattern management record 230 acquired from the pattern information storage unit 23.

When it is determined that the character pattern matches the registered character pattern (when "YES" in step S1-8), the control unit 21 of the verification support server 20 executes the output processing of the validity determination result (step S1-9). Specifically, the determination support unit 214 of the control unit 21 determines that the driver's license to be verified is valid (authentic), and outputs the determination result to the display of the user terminal 10.

On the other hand, when the ratio of each pattern code is less than the commonality judgment ratio and it is determined that the pattern codes are not common, or when it is determined that the pattern code does not match the registered character pattern ("NO" in steps S1-5 and S1-8). ), The control unit 21 of the verification support server 20 executes the output process of the confirmation screen (step S1-10). Specifically, the determination support unit 214 of the control unit 21 outputs a confirmation screen to the display of the user terminal 10. This confirmation screen contains a message urging the driver's license to be verified to be scrutinized. Further, the confirmation screen includes a selection button (authenticity or forgery) for inputting the confirmation result.

Next, the control unit 21 of the verification support server 20 executes a determination process as to whether or not it is valid (step S1-11). Specifically, when the confirmation result is input to the confirmation screen of the user terminal 10 by the person in charge, the determination support unit 214 of the control unit 21 determines the authenticity based on the input confirmation result.

When the genuine selection button is selected and it is determined to be valid (when "YES" in step S1-11), the control unit 21 of the verification support server 20 executes the change information storage process (step S1-12). .. Specifically, the determination support unit 214 of the control unit 21 re-evaluates and manages the pattern code for each character to be verified and the representative pattern code in association with the issuance time and the issuance area of the driver's license determined to be valid. The record 240 is recorded in the re-evaluation information storage unit 24.

On the other hand, when it is determined that it is not valid (when "NO" in step S1-11), the control unit 21 of the verification support server 20 skips the change information accumulation process (step S1-12) and ends the process. do.

When the number of records of the re-evaluation management record 240 associated with the same delivery area exceeds the confirmation determination reference value, the dictionary storage unit 22 and the pattern information storage unit 23 are reviewed by batch processing. Specifically, when the determination support unit 214 of the control unit 21 of the verification support server 20 reaches the confirmation determination reference value in the re-evaluation information storage unit 24, the number of records of the re-evaluation management record 240 in the same delivery area is reached. , A warning message is output to the output unit 13 of the user terminal 10. In this case, the determination support unit 214 specifies the delivery period based on the delivery time recorded in the re-evaluation management record 240. Then, in the alert message, it is proposed to register a new pattern management record 230 in which the representative pattern code is recorded for the delivery period and the delivery area. When the approval input of this proposal is made in the user terminal 10, the determination support unit 214 generates a new pattern management record 230 in which the delivery period, the delivery area, and the representative pattern code are recorded, and the pattern information storage unit 23 generates a new pattern management record 230. Record.

As described above, according to the present embodiment, the following effects can be obtained.
(1-1) In the present embodiment, the dictionary management record 220 for identifying the verification target character included in the certificate is recorded in the dictionary storage unit 22. Data related to the verification target character, the morphological feature, and the pattern code are recorded in the dictionary management record 220. In the dictionary storage unit 22, a pattern code is recorded in association with the morphological characteristics of the character to be verified. In this case, a common pattern code is assigned to the plurality of verification target characters for the verification target characters that may be included in one certificate. As a result, it is possible to support the validity determination of the certificate based on the pattern code included in the plurality of verification target characters included in one certificate.

(1-2) In the present embodiment, the pattern management record 230 for determining the certificate is recorded in the pattern information storage unit 23. Data regarding the delivery period, delivery area, and pattern code are recorded in the pattern management record 230. Thereby, it is possible to support the validity determination of the certificate based on the character form used in the certificate according to the delivery time and the delivery area.

(1-3) In the present embodiment, the control unit 21 of the verification support server 20 specifies a character pattern to be used for each specified verification target character (step S1-4), and determines whether or not the pattern code is common. (Step S1-5) is executed. When it is determined that the pattern codes are not common (when "NO" in step S1-5), the control unit 21 of the verification support server 20 executes the output process of the confirmation screen (step S1-10). This makes it possible to support the validity determination of the certificate based on the variation in the character form of each verification target character. That is, when the variation of the pattern code is large, it is possible to detect the possibility that it is not effective.

(1-4) In the present embodiment, the control unit 21 of the verification support server 20 determines the delivery time, the process of specifying the registered character pattern for the delivery area (step S1-7), and whether or not the registration character pattern matches. The determination process (step S1-8) is executed. This makes it possible to support the validity determination of the certificate based on the confirmation record of the certificate.

(1-5) In the present embodiment, when the genuine selection button is selected and it is determined to be valid (when "YES" in step S1-11), the control unit 21 of the verification support server 20 accumulates change information. The process is executed (step S1-12). As a result, even when a character of a new pattern code is used in the certificate, it is possible to prompt the update of the registered character pattern by using the change information.

(Second embodiment)
Next, the second embodiment will be described with reference to FIG. In the first embodiment, the dictionary storage unit 22 is used to specify a pattern code based on the morphological characteristics of the characters to be verified, and the effectiveness is based on the commonality of the pattern codes and the matching with the registered character patterns. To judge. The method for determining effectiveness is not limited to this. In the second embodiment, the effectiveness is determined based on the morphological characteristics of each character to be verified. In the second embodiment, detailed description of the same parts as those in the first embodiment will be omitted.

In this case, the determination support unit 214 holds data on the matching reference value for determining the matching status with the character form of the registered character pattern for the verification target character group.
Further, as shown in FIG. 5A, data regarding the delivery period, the delivery area, the verification target character, and the morphological feature are recorded in the pattern management record 231 of the pattern information storage unit 23.

In the issuance period data area, data regarding the time (range) when the certificate was issued is recorded.
The delivery area data area records data about the area to which the certificate was issued.
Data related to the character (text) to be verified is recorded in the verification target character data area.
In the morphological feature data area, data related to the morphology of the character to be verified is recorded.

Next, the processing procedure of the certificate verification process will be described with reference to FIG. 5 (b).
First, the control unit 21 of the verification support server 20 performs a certificate image acquisition process (step S2-1) and a character identification process included in the certificate image (step S1), as in steps S1-1 to S1-3. -2) Execute the verification target character identification process (step S1-3).

Next, the control unit 21 of the verification support server 20 determines the delivery time, the delivery area identification process (step S2-4), the delivery time, and the registered character pattern of the delivery area, as in steps S1-6 and S1-7. The specific process (step S2-5) is executed. Specifically, the determination support unit 214 of the control unit 21 records from the pattern information storage unit 23 the pattern management record 230 in which the issuance period and the issuance area corresponding to the issuance time and the issuance area of the driver's license to be verified are recorded. To get.

Next, the control unit 21 of the verification support server 20 sequentially specifies the verification target character as a processing target, and repeats the following processing.
Here, the control unit 21 of the verification support server 20 executes a process for specifying the morphological characteristics of the verification target character (step S2-6). Specifically, the character verification unit 213 of the control unit 21 acquires the morphological characteristics of the verification target character in the acquired pattern management record 230.

Next, the control unit 21 of the verification support server 20 executes a comparison process with the registered character pattern (step S2-7). Specifically, the character verification unit 213 of the control unit 21 cuts out a character image of the verification target character extracted from the driver's license image. Then, the character verification unit 213 determines whether or not the form of the character image (character pattern used) has the form feature acquired from the pattern management record 230, and determines whether the character image matches or does not match. Then, the character verification unit 213 temporarily records the determination result of the verification target character to be processed in the memory.
The control unit 21 of the verification support server 20 repeats all the verification target characters until the above processing is completed.

Next, the control unit 21 of the verification support server 20 executes a determination process as to whether or not the match rate is equal to or higher than the reference value (step S2-8). Specifically, the determination support unit 214 of the control unit 21 calculates the ratio (match rate) of the determination result of the match in the determination result temporarily stored in the memory. Then, the determination support unit 214 compares the calculated match rate with the match reference value.

When it is determined that the match rate is equal to or higher than the match reference value (when "YES" in step S1-8), the control unit 21 of the verification support server 20 executes the output processing of the validity determination result as in step S1-9. (Step S2-9).

On the other hand, when it is determined that the match rate has not reached the match reference value (when "NO" in step S2-8), the control unit 21 of the verification support server 20 is similarly to steps S1-10 to S1-12. , The confirmation screen output process (step S2-10) to the change information storage process (step S2-12) are executed. In the change information storage process (step S2-12), the re-evaluation information storage unit 24 records the driver's license issuance time, issuance area, verification target characters, and morphological features.

Then, when the number of records of the re-evaluation management record 240 associated with the same delivery area becomes equal to or more than the confirmation determination reference value, the pattern information storage unit 23 is reviewed by batch processing. Specifically, when the determination support unit 214 of the control unit 21 of the verification support server 20 reaches the review reference value in the re-evaluation information storage unit 24 when the number of records of the re-evaluation management record 240 in the same delivery area reaches the review reference value. A warning message is output to the output unit 13 of the user terminal 10. In this case, the determination support unit 214 specifies the delivery period based on the delivery time recorded in the re-evaluation management record 240. Then, in the alert message, it is proposed to register a new pattern management record 231 that records the delivery period, the delivery area, and the morphological characteristics. When the approval input of this proposal is made on the user terminal 10, the determination support unit 214 generates a new pattern management record 231 that records the delivery period, the delivery area, the characters to be verified, and the morphological features, and stores the pattern information. Record in unit 23.

As described above, according to the present embodiment, the following effects can be obtained.
(2-1) In the present embodiment, the pattern management record 231 of the pattern information storage unit 23 records data related to the delivery period, the delivery area, the characters to be verified, and the morphological features. Then, the control unit 21 of the verification support server 20 executes a comparison process with the registered character pattern (step S2-7) and a determination process (step S2-8) as to whether or not the match rate is equal to or higher than the reference value.

Further, each of the above embodiments may be changed to the following aspects.
-In each of the above embodiments, the driver's license is applied as a certificate, but the application is not limited to this. For example, it can be applied to a certificate issued by a local government in each region.
-In each of the above embodiments, a user terminal 10 and a verification support server 20 that communicate via a network are used. The hardware configuration is not limited to this. For example, the character recognition unit 212 to the determination support unit 214 may be processed in one piece of hardware (user terminal 10 provided with the camera 14).

-In each of the above embodiments, the characters of each item included in the driver's license are used as the characters to be verified. The characters to be verified are not limited to these.
-In each of the above embodiments, the camera 14 provided in the user terminal 10 is used to acquire the certificate image. If the certificate image can be acquired, the image acquisition method is not limited to the case of using the camera 14. For example, it is also possible to use a scanner connected to a computer terminal.

-In each of the above embodiments, the morphological features are recorded for the characters to be verified. In this case, a plurality of morphological features may be set for the verification target character. For example, a plurality of strokes constituting one verification target character and morphological features for the entire shape are set, and the same pattern code is assigned to the morphological characteristics of the verification target character included in the same certificate.

-In the first embodiment, in the dictionary storage unit 22, the morphological features are recorded in association with the verification target character and the pattern code. In the second embodiment, the pattern information storage unit 23 records the delivery period, the delivery area, and the verification target character in association with the morphological features. Here, in the dictionary storage unit 22 and the pattern information storage unit 23, the pattern code may be further recorded in association with the resolution of the image generation means (camera 14). In this case, when the certificate image is acquired, the information regarding the resolution of the camera 14 used for shooting is also acquired. Then, the pattern code is specified based on the morphological features corresponding to the resolution. The form of characters may change depending on the resolution, but the effectiveness can be accurately determined in consideration of this resolution.

-In the first embodiment, a pattern code having a commonality determination ratio or more is specified as a representative pattern code. In this case, as long as the pattern code representing the certificate to be verified can be specified, the method is not limited to the method using the commonality determination ratio. For example, the most common pattern code may be specified as a representative pattern code.

10 ... User terminal, 11 ... Control unit, 12 ... Input unit, 13 ... Output unit, 14 ... Camera, 20 ... Verification support server, 21 ... Control unit, 211 ... Image acquisition unit, 212 ... Character recognition unit, 213 ... Character Verification unit, 214 ... Judgment support unit, 22 ... Dictionary storage unit, 23 ... Pattern information storage unit, 24 ... Re-evaluation information storage unit.

Claims (6)

A pattern information storage unit that records registered character patterns that are characteristic of the shape of the partial morphological elements that make up the characters contained in the certificate in relation to the certificate issuance area and issuance period.
A re-evaluation information storage unit that records re-evaluation management records including character patterns in relation to the issuance time and delivery area of the certificate determined to be valid,
The image acquisition unit that acquires the image of the certificate to be verified from the user terminal ,
A character recognition unit that recognizes characters included in the image, and
Using the image of the certificate, a character verification unit that specifies the character pattern used as a feature of the shape of the partial morphological elements that make up the character used,
Based on the character recognition result of the image, the registered character pattern associated with the issuance area and the issuance time of the certificate is acquired from the pattern information storage unit, and whether the used character pattern and the registered character pattern match. If it is determined whether or not it is inconsistent, a confirmation screen is output to the user terminal, and if it is determined to be valid on the confirmation screen, it is associated with the issuance area and issuance time of the certificate to be verified . The re-evaluation management record including the used character pattern is recorded in the re-evaluation information storage unit, and when the number of records of the re-evaluation management record associated with the same delivery area exceeds the confirmation judgment reference value, a warning is issued. A certificate verification device equipped with a judgment support unit that outputs . A plurality of characters to be verified are extracted from the image of the certificate, and the characters to be verified are extracted.
A character pattern is specified for each character to be verified, and the character pattern is specified.
The certificate verification device according to claim 1, wherein the character pattern used in the certificate is specified based on the number of the specified character patterns. A plurality of characters to be verified are extracted from the image of the certificate, and the characters to be verified are extracted.
The character pattern used is specified for each character to be verified, and the character pattern used is specified.
The invention according to claim 1 or 2, wherein the character pattern used is compared with the registered character pattern for each character to be verified, and information on the validity of the certificate is output based on the result of the comparison. Certificate verification device. Claims 1 to 3 further include an output unit that outputs information regarding the validity of the certificate based on the result of determination as to whether or not the used character pattern and the registered character pattern match. The certificate verification device described in any one of the items. A pattern information storage unit that records registered character patterns that are characteristic of the shape of the partial morphological elements that make up the characters contained in the certificate in relation to the certificate issuance area and issuance period.
A re-evaluation information storage unit that records re-evaluation management records including character patterns in relation to the issuance time and delivery area of the certificate determined to be valid,
It is a method for performing certificate verification using a certificate verification device equipped with a control unit connected to a user terminal .
The control unit
The image of the certificate to be verified is acquired from the user terminal , and the image is obtained.
Recognize the characters contained in the image and
Using the image of the certificate, the character pattern used was identified as a feature of the shape of the partial morphological elements constituting the character used.
Based on the character recognition result of the image, the registered character pattern associated with the issuance area and the issuance time of the certificate is acquired from the pattern information storage unit, and whether the used character pattern and the registered character pattern match. If it is determined whether or not it is inconsistent, a confirmation screen is output to the user terminal, and if it is determined to be valid on the confirmation screen, it is associated with the issuance area and issuance time of the certificate to be verified . The re-evaluation management record including the used character pattern is recorded in the re-evaluation information storage unit, and when the number of records of the re-evaluation management record associated with the same delivery area exceeds the confirmation judgment reference value, a warning is issued. A certificate verification method characterized by outputting . A pattern information storage unit that records registered character patterns that are characteristic of the shape of the partial morphological elements that make up the characters contained in the certificate in relation to the certificate issuance area and issuance period.
A re-evaluation information storage unit that records re-evaluation management records including character patterns in relation to the issuance time and delivery area of the certificate determined to be valid,
A program for performing certificate verification using a certificate verification device equipped with a control unit connected to a user terminal .
The control unit
Image acquisition unit that acquires the image of the certificate to be verified from the user terminal ,
A character recognition unit that recognizes characters included in the image,
A character verification unit that uses the image of the certificate to specify the character pattern used as a feature of the shape of the partial morphological elements that make up the character used.
Based on the character recognition result of the image, the registered character pattern associated with the issuance area and the issuance time of the certificate is acquired from the pattern information storage unit, and whether the used character pattern and the registered character pattern match. If it is determined whether or not it is inconsistent, a confirmation screen is output to the user terminal, and if it is determined to be valid on the confirmation screen, it is associated with the issuance area and issuance time of the certificate to be verified . The re-evaluation management record including the used character pattern is recorded in the re-evaluation information storage unit, and when the number of records of the re-evaluation management record associated with the same delivery area exceeds the confirmation judgment reference value, a warning is issued. A certificate verification program characterized by functioning as a judgment support unit that outputs .

Images