JP2019153212A - Counterfeit determination device, counterfeit determination method, and counterfeit determination program - Google Patents

Abstract

To detect counterfeiting by rewriting a number described on a license plate.SOLUTION: A segmentation unit 11a processes a picked-up image obtained by picking up a license plate 3a of a vehicle 3, which is input to an image input unit 12, and segments a number described on the license plate 3a. A determination unit 11b collates the number segmented from the license plate 3a by the segmentation unit 11a with a counterfeited number image related to the counterfeited number stored in a counterfeited number storage DB 13 and determines whether the number segmented from the license plate 3a is counterfeited.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technique for determining counterfeiting of a license plate attached to a vehicle.

  Conventionally, license plates (car registration number signs) attached to the front and rear of the vehicle are processed to recognize the license plate number, and the license plate includes the replacement of the license plate depending on whether the two match. (For example, refer to Patent Document 1).

JP 2014-115961 A

  However, Patent Document 1 is configured to detect forgery of a license plate depending on whether or not the number information written on the license plate attached to the front surface and the rear surface of the vehicle is different. That is, Patent Document 1 detects that the number plate is not counterfeited if the number information written on the number plate attached to the front surface and the rear surface of the vehicle is the same.

  Therefore, Patent Document 1 cannot detect forgery in which numbers written on the license plate are rewritten. Forgery by rewriting the numbers written on the license plate is, for example, rewriting “0” to “8” or “6” for each license plate attached to the front and rear of the vehicle. This refers to counterfeiting such as “8”.

  An object of the present invention is to provide a technique capable of detecting forgery in which numbers written on a license plate are rewritten.

  The counterfeit determination device according to the present invention is configured as follows to achieve the above object.

  A captured image obtained by capturing a vehicle license plate (car registration number mark) is input to the image input unit. The cutout unit processes the captured image of the vehicle license plate input to the image input unit, and cuts out the numbers written on the license plate. Then, whether the number cut out from the number plate is forged by the judgment unit comparing the number cut out from the number plate by the cutout unit with the forged number image related to the forged number stored in the storage unit Determine if.

  According to this configuration, when the written “0” is rewritten to “8” or the written “6” is rewritten to “8” for the license plate, the rewritten “8” is written. ”Is stored in the storage unit as a forged number image, it is possible to determine whether or not the number written on the license plate has been rewritten.

  In addition, the cutout unit individually cuts out the numbers written on the license plate, and the determination unit determines that any one of the numbers cut out from the license plate is forged. Is preferably determined to be counterfeited.

  Further, the image input unit may be configured to input a captured image obtained by imaging a license plate attached to the vehicle tail side of the vehicle, or an image obtained by imaging a license plate attached to the vehicle head side of the vehicle. An image may be input.

  Furthermore, if the picked-up image which imaged the number plate attached to the vehicle rear side of a vehicle is input into an image input part, you may provide the detection part which detects whether the number plate is sealed.

  According to the present invention, it is possible to detect forgery in which numbers written on a license plate are rewritten.

It is a block diagram which shows the structure of the principal part of a forgery determination apparatus. It is a figure which shows the example of installation of the camera which inputs a captured image with respect to a forgery determination apparatus. It is the schematic which shows a general license plate. 4A, 4B, and 4C are diagrams showing forged characters. It is a flowchart which shows operation | movement of the forgery determination apparatus concerning this example. It is a block diagram which shows the structure of the principal part of the forgery determination apparatus concerning another example. It is a flowchart which shows operation | movement of the forgery determination apparatus concerning another example.

  Embodiments of the present invention will be described below.

<1. Application example>
FIG. 1 is a block diagram showing a configuration of a main part of a forgery determination device according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an installation example of a camera that inputs a captured image to the forgery determination device according to this example. As shown in FIG. 2, the camera 2 captures an image of the rear side (the rear end side of the vehicle) of the vehicle 3 traveling on the traveling path 5 from above the road surface of the traveling path 5 with a certain depression angle. Is installed. The camera 2 is installed so that the target area 6 shown in FIG. 2 fits in the imaging area (the entire imaging area of the camera 2 is not the target area 6). In FIG. 2, a single camera 2 covers two lanes, but a camera 2 may be provided for each lane.

  A captured image captured by the camera 2 is input to the forgery determination device 1. The forgery determination device 1 processes the input captured image and cuts out a license plate 3a (automobile registration number mark) attached to the vehicle rear side of the vehicle 3 being imaged. Further, the forgery determination device 1 cuts out the serial designation number written on the license plate 3a one digit at a time.

  FIG. 3 is a schematic view showing a general license plate. On the license plate 3a, a registered place name, a classification number, a hiragana, and a series designation number are written. The registered place name indicates a place name (land transportation station or municipality) where the vehicle is registered. The classification symbol indicates the classification according to the type and use of the vehicle. Hiragana indicates business use, private use, etc. The series designation number is usually a maximum of 4 digits (exceptionally, there are 5 digits or more, or a combination of alphabets and numbers).

  Further, the license plate 3a attached to the rear of the vehicle 3 is sealed. The number plate 3a is attached to the vehicle 3 with screws on both the left and right sides on the upper end side. The seal is placed on the left screw head (the right screw is not sealed).

  The forgery determination device 1 determines whether the extracted serial designation number is forged by one digit at a time. If it is determined that even one digit is forged, it determines that the license plate 3a is forged. In other words, if the forgery determination device 1 determines that all the digits of the cut out serial designation number are not forged, it determines that the license plate 3a is not forged. If the forgery determination device 1 determines that the license plate 3a is forged, the counterfeit determination device 1 notifies the host device or the like to that effect. The host device may be, for example, a report reception device at a police station in the area where the camera 2 is installed, or may be another device.

<2. Configuration example>
The configuration of the forgery determination device 1 according to this example will be described in detail with reference to FIG. The forgery determination device 1 includes a control unit 11, an image input unit 12, a forged number storage database 13 (forged number storage DB 13), and a communication unit 14.

  The control unit 11 controls the operation of each part of the forgery determination device 1 main body. The control unit 11 includes a cutout part 11a and a determination part 11b. Details of the cutout unit 11a and the determination unit 11b will be described later.

  A captured image obtained by capturing the target area 6 with the camera 2 is input to the image input unit 12. The image input unit 12 has an image memory that temporarily stores the input captured image.

  The forged number storage DB 13 stores a forged number pattern image (forged number image referred to in the present invention) in which the numbers 0 to 9 written on the license plate 3a are forged. For example, a forged number pattern image of “8” forged “0” (see FIG. 4A), a forged number pattern image of “8” forged “6” (see FIG. 4B), A counterfeit digit pattern image of “4” in which “1” is counterfeited (see FIG. 4C) and the like are stored. The forged number storage DB 13 corresponds to the storage unit referred to in the present invention.

  The communication unit 14 performs data communication with an external device such as a host device.

  Next, the cutout unit 11a and the determination unit 11b included in the control unit 11 will be described. The cutout unit 11a cuts out from the captured image input to the image input unit 12 a series of designated numbers written on the license plate 3a of the vehicle 3 captured in the captured image one digit at a time.

  The determination unit 11b collates the image of the serially designated number cut out by the cutout unit 11a with the forged number pattern image stored in the forged number storage DB 13 one by one, and is a number forged by the degree of similarity. Determine whether or not. If the determination unit 11b determines that at least one of the series designation numbers cut out by the cutout unit 11a is forged, the determination unit 11b determines that the license plate 3a is forged.

  The control unit 11 of the forgery determination device 1 includes a hardware CPU, a memory, and other electronic circuits. When the hardware CPU executes the forgery determination program according to the present invention, it operates as the cutout unit 11a and the determination unit 11b. Further, the memory has an area for developing the forgery determination program according to the present invention and an area for temporarily storing data generated when the forgery determination program is executed. The control unit 11 may be an LSI in which a hardware CPU, a memory, and the like are integrated. The hardware CPU is a computer that executes the forgery determination method according to the present invention.

<3. Example of operation>
FIG. 5 is a flowchart showing the operation of the forgery determination device according to this example. The forgery determination device 1 according to this example is attached to the stern side of the vehicle 3 captured in the captured image (captured image in which the target area 6 is captured by the camera 2) input to the image input unit 12. A series designation number written on the license plate 3a is cut out by one digit (s1). The cutout unit 11a executes the process related to s1.

  The determination unit 11b collates the series designation number cut out in s1 one by one with the forged number pattern image stored in the forged number storage DB 13, and determines whether the number is a forged number or not by the similarity. (S2). If the determination unit 11b determines that at least any one digit is a forged number, the vehicle 3 captured in the captured image processed this time is the vehicle 3 for which the license plate 3a is forged. And notifies the host device of that fact (s3, s4), and returns to s1.

  On the other hand, if the determination unit 11b determines that all the digits are not forged numbers, the vehicle 3 captured in the captured image processed this time is the vehicle 3 for which the license plate 3a is not counterfeited. Judge (s3) and return to s1.

  In this way, the counterfeit determination device 1 according to this example rewrites the written “0” to “8” or rewrites the written “6” to “8” for the license plate 3a. It is possible to determine whether or not forgery is performed such as rewriting “1” to “4”.

  In the above example, the captured image of the license plate 3a attached to the vehicle tail side of the vehicle 3 is processed, but the captured image of the license plate attached to the vehicle head side of the vehicle 3 is processed. There may be.

  Further, not only the serial designation number but also the registered place name, classification number, hiragana, etc. written on the license plate 3a may be determined as to whether or not forgery is performed by rewriting. In this case, the registered place name, classification number, forged characters for hiragana, etc., or pattern images for forged numbers may be stored in the forged number storage DB 13.

<4. Modification>
FIG. 6 is a diagram illustrating a configuration of a main part of a forgery determination device according to another example. The forgery determination device 1 according to this example is different from the above example in that the control unit 11 includes a detection unit 11c. In the detection unit 11c, the license plate 3a attached to the vehicle rear side of the vehicle 3 captured in the captured image (the captured image in which the target area 6 is captured by the camera 2) input to the image input unit 12 is sealed. Detect whether it has been. The detection unit 11c detects whether or not the license plate 3a is sealed by determining the presence or absence of sealing by a known technique such as pattern matching.

  FIG. 7 is a flowchart illustrating the operation of the forgery determination device according to another example. The forgery determination device 1 according to this example is attached to the stern side of the vehicle 3 captured in the captured image (captured image in which the target area 6 is captured by the camera 2) input to the image input unit 12. It is detected whether the license plate 3a is sealed (s11). The detection unit 11c executes the process related to s11.

  If the forgery determination device 1 according to this example determines that the license plate 3a is sealed at s11, the forgery determination device 1 executes the above-described processing after s1. On the other hand, if the counterfeit determination device 1 determines that the license plate 3a is not sealed in s11, the counterfeit determination device 1 determines that the license plate 3a is a counterfeited vehicle 3, and notifies the host device of that fact in s4. Return.

  Thus, the forgery determination device 1 according to this example can also detect forgery related to the replacement of the license plate 3a.

  Further, the determination relating to s11 is executed when it is determined that all the digits of the serial designation number cut out in s1 are not forged numbers (when it is determined in s3 that there are no forged numbers). It may be.

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

Furthermore, the correspondence between the configuration according to the present invention and the configuration according to the above-described embodiment can be described as in the following supplementary notes.
<Appendix>
An image input unit (12) to which a captured image obtained by imaging the license plate (3a) of the vehicle (3) is input;
A cutout unit (11a) that processes a captured image of the license plate (3a) of the vehicle (3) input to the image input unit (12), and cuts out a number written on the license plate (3a); ,
A storage unit (13) for storing a forged number image relating to a forged number;
The number cut out from the number plate (3a) by the cutout part (11a) and the forged number image stored in the storage part (13) are collated, and the number cut out from the number plate (3a) A forgery determination device (1) comprising: a determination unit (11b) that determines whether the forgery has been made.

DESCRIPTION OF SYMBOLS 1 ... Counterfeit determination apparatus 2 ... Camera 3 ... Vehicle 3a ... License plate 4 ... Normal maximum 5 ... Traveling path 6 ... Target area 11 ... Control unit 11b ... Determination part 11c ... Detection part 12 ... Image input part 13 ... Counterfeit number storage database (Counterfeit Number DB)
14 ... Communication Department

Claims (6)

An image input unit to which a captured image obtained by imaging a vehicle license plate is input;
A cut-out unit that processes the captured image of the license plate of the vehicle input to the image input unit, and cuts out the numbers written on the license plate;
A storage unit for storing a forged number image relating to a forged number;
Judgment by comparing the number cut out from the license plate by the cutout unit with the forged number image stored in the storage unit and determining whether the number cut out from the number plate is forged A counterfeit determination device. The cutout part individually cuts out the numbers written on the license plate,
The counterfeit according to claim 1, wherein the determination unit determines that the license plate is counterfeited when the cutout unit determines that any number cut out from the license plate is counterfeit. Judgment device.   The forgery determination device according to claim 1 or 2, wherein a captured image obtained by capturing the license plate attached to a vehicle rear side of the vehicle is input to the image input unit.   The forgery determination device according to claim 3, further comprising a detection unit that processes an image of the license plate input to the image input unit and detects whether the license plate is sealed. A cut-out step of processing a picked-up image obtained by picking up a license plate of a vehicle input to the image input unit and cutting out a number written on the license plate;
The number cut out from the number plate in the cutout step is compared with the forged number image related to the forged number stored in the storage unit to determine whether the number cut out from the number plate is forged. A forgery determination method executed by a computer. A cut-out step of processing a picked-up image obtained by picking up a license plate of a vehicle input to the image input unit and cutting out a number written on the license plate;
The number cut out from the number plate in the cutout step is compared with the forged number image related to the forged number stored in the storage unit to determine whether the number cut out from the number plate is forged. A forgery determination program for causing a computer to execute the determination step.

Images