JPH09305771A - Id card, card processor and card processing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the forgery and unauthorized use of an ID card. SOLUTION: Wire frame data 11 of a card owner and image data 12 are recorded in an ID card 10. A card processor 20 reads the data of the ID card 10 through a card reader 21 and stores them in a memory 22 for read data. A visual point change instruction part 23 designates the arbitrary visual point of an operator of the card processor 20. An image generating part 24 reads the wire frame data 11 and image data stored in the memory 22 for read data, composes the face image of three-dimensional model of the card owner and outputs the face image onto a display 25 as the face image from the arbitrary visual point according to the instruction of the visual point change instruction part 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ID card for surely recognizing a cardholder, a card processing device and a card processing system.

[0002]

2. Description of the Related Art Conventionally, an ID card of this type is, for example,
As disclosed in Japanese Patent Application Laid-Open No. 6-262888, forgery of an ID card is performed by recording unique information of the card holder and printing a three-dimensional image of the person's face photograph or hologram on the card. And we are trying to prevent unauthorized use.

[0003]

However, in the conventional ID card, since the face photograph and hologram printed on the card are small and unclear, the information and the person who uses the card are not recorded. There is a possibility that the comparison work cannot be performed accurately. Also, as in the photograph, it may be difficult to determine that the person is the person he / she sees from the front, and even if the hologram is used to display stereoscopically, the image is small. The lack of clarity makes it difficult to identify the person.

From this point of view, it has been desired to realize a system having a high effect of preventing forgery and illegal use of the ID card.

[0005]

The present invention employs the following structure to solve the above-mentioned problems. <Structure of Claim 1> It has three-dimensional shape information of the head of the cardholder and image data of the head.
It is a D card.

<Explanation of Claim 1> The three-dimensional shape information of the head is, for example, wireframe data or data indicating a characteristic point of the wireframe data. The image data is, for example, a two-dimensional image of the entire circumference of the head of the cardholder. In other words, by these data, the cardholder's 3
This is the data that can restore the dimensional model. With such a configuration, the effect of preventing forgery as an ID card is high, and the effect of preventing unauthorized use can be improved.

<Structure of Claim 2> In the ID card according to claim 1, the three-dimensional shape information is wireframe data, and the image data is an image of the entire circumference of the head. is there.

<Explanation of Claim 2> In the invention of Claim 2,
Since the image of the entire circumference of the head is used as the image data, the three-dimensional model can be restored with a much smaller amount of data than when recording a moving image of the head taken from the entire circumference direction. Therefore, it is possible to effectively use the memory resources of the ID card.

<Structure of Claim 3> A card reading device for reading the three-dimensional shape information of the head of the card holder stored in the ID card and the image data of the head, and an arbitrary viewpoint position data are designated. Based on the viewpoint change command unit, the three-dimensional shape information and the image data read by the card reading device, the three-dimensional model of the cardholder is restored, and the viewpoint change command unit specifies the three-dimensional model. A card processing device, comprising: an image generation unit that generates a face image viewed from the selected viewpoint position; and a display that displays the face image generated by the image generation unit.

<Explanation of Claim 3> When confirming the card user by the ID card, first, the card reading device reads the three-dimensional shape information and the image data in the ID card. Here, the three-dimensional shape information of the head of the ID card is, for example, wireframe data or data indicating a characteristic point of the wireframe data. The image data is, for example, a two-dimensional image of the entire circumference of the head of the cardholder. Then, the operator of the card processing device designates a desired viewpoint position from the viewpoint change command section. The image generation unit reads the 3
Based on 3D shape information and image data, the cardholder's 3
The dimensional model is restored and is displayed on the display as a face image viewed from the designated viewpoint position.

With such a configuration, the face image of the cardholder recorded in the ID card can be displayed as an image viewed from an arbitrary direction. The owner of the card can be easily and surely confirmed.

<Structure of Claim 4> An ID card having the characteristic data of the head of the cardholder and the image data of the head, and a card processing device. The card processing device is I
A card reading device that reads the feature data stored in the D card and the image data of the head, a viewpoint change command unit that specifies arbitrary viewpoint position data, and a standard head 3
A standard three-dimensional shape information storage unit for storing three-dimensional shape information,
The standard three-dimensional shape information is transformed by the characteristic data read by the card reading device, and the 3
Based on the wireframe deforming section for reconstructing the dimensional shape information, the three-dimensional shape information reconstructed by the wireframe deforming section, and the image data, the cardholder's three-dimensional model is restored, and this three-dimensional model is created. On the other hand, in a card processing system characterized by including an image generation unit that generates a face image viewed from the viewpoint position designated by the viewpoint change command unit, and a display that displays the face image generated by the image generation unit. is there.

<Explanation of Claim 4> According to the invention of Claim 4, the card processor has a function of reconstructing a three-dimensional model of the head of the cardholder, and a standard three-dimensional model is provided in the ID card. Only the characteristic data, which is information for deforming the shape information, is recorded. Here, the feature data is, for example, data such as coordinate values of some predetermined vertices in the wire frame and vertical and horizontal scale values. In addition, the standard three-dimensional shape information of the head is
For example, it is wireframe data composed of vertex coordinate data and link data for an average head shape of a plurality of persons rather than a specific individual.

When confirming the card user by the ID card, first, the characteristic data and the image data in the ID card are read by the card reading device. The wire frame transformation unit transforms the standard three-dimensional shape information with the characteristic data to reconstruct the cardholder's three-dimensional shape information. Further, the operator of the card processing device designates a desired viewpoint position from the viewpoint change command section. The image generation unit restores the three-dimensional model of the cardholder based on the three-dimensional shape information reconstructed by the wireframe deformation unit and the image data read by the card reading device,
Moreover, it is displayed on the display as a face image viewed from the specified viewpoint position. Therefore, the amount of recorded information in the ID card can be reduced.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. << Specific Example 1 >><Configuration> FIG. 1 is a specific example 1 of the card processing system of the present invention.
It is a block diagram which shows. The system shown in the figure is an ID card 10
And a card processing device 20. The ID card 10 is composed of, for example, an IC card, a credit card,
It is a card that requires confirmation of its identity when used. Face data of the person himself / herself is recorded in a signal state on the ID card 10. The face data is wireframe data 11 and image data 12.

2 and 3, wireframe data 11
And the image data 12 are shown. Wireframe data 1
1 is composed of vertex coordinate data in which three-dimensional vertex coordinates are arranged and link data indicating which vertex is connected to which vertex in order to form one polygon. The wire frame data 11 is created by previously measuring the shape of the entire head of the card owner using a range sensor or the like.

The image data 12 is a two-dimensional image of the face of the person photographed by a range sensor or the like. As shown in FIG. 3, this is image data obtained by a slit-shaped camera having the length of a person's head, making one round around the person's head. The wire frame data 11 and the image data 12 are digitally encrypted and recorded in the card.

The card processing device 20 comprises a card reading device 21, a read data memory 22, a viewpoint changing command section 23, an image generating section 24, and a display 25. The card reading device 21 is a device for reading the wire frame data 11 and the image data 12 recorded on the ID card 10, and a read data memory 22.
Is a memory for temporarily storing the data read by the card reading device 21. The viewpoint change command unit 23
It has a function of sending a viewpoint change command to the image generation unit 24 in response to user input. The image generation unit 24 digitally combines the wire frame data 11 and the image data 12 stored in the read data memory 22,
It has a function of synthesizing an image by computer graphics (hereinafter referred to as CG) from these data. The display 25 is a device for displaying the face image generated by the image generation unit 24.

FIG. 4 is an explanatory diagram of a usage state of the card processing system of this specific example. As shown in the figure, when the card user uses the card, the ID card 10 of the user is inserted into the card reading device 21. Card processing device 2
The operator of 0 can operate the viewpoint change command unit 23 to rotate the CG face image displayed on the display 25 in an arbitrary direction.

<Operation> FIG. 5 is an operation flowchart of the card processing apparatus 20 in the first embodiment. First, the ID
The user of the card 10 or the operator of the card processing device 20 inserts the ID card 10 into the card reading device 21 and stores the face data recorded in the card in the read data memory 22 in the card processing device 20. (Step S1). Next, the image generation unit 24 synthesizes the face image based on the wire frame data 11 and the image data 12 of the read data memory 22, and displays it on the display 25 (step S2). The synthesizing process will be described later. Further, the operator of the card processing device 20 inputs a desired direction from the viewpoint changing command section 23, and the image generating section 24 rotates the face image according to this instruction and displays it on the display 25. Thus, the operator of the card processing device 20 confirms that the card user is surely the owner of the ID card 10 based on the face image displayed on the display 25 (step S3).

6 and 7 are explanatory views of the face image synthesis. The texture of the face image data is attached to each polygon on the wire frame of the face to synthesize the CG face image. Here, a polygon is a unit of a plane when drawing a CG. As shown in FIG. 6A, first, the face wireframe (wireframe data 11) is overlaid on the face image (image data 12), and then cut along the shape of each polygon on the wireframe. The surface (texture) on the image is attached to the polygon as the surface color of the polygon {FIG. 6 (b)}. Then, mapping is performed for all the polygons in the wire frame, so that I
A three-dimensional head model of the person who owns the D card is completed {FIG. 7 (c)}.

The head model synthesized by CG can freely rotate and scale the viewpoint. That is,
The operator of the card processing device 20 inputs the angle of view point and the enlargement ratio from the view point change command unit 23 to display the face of the owner recorded in the ID card from a view point viewed from an arbitrary direction. 25 can be displayed.

<Effect> As described above, in the first specific example, I
Since the wire frame data 11 and the image data 12 are provided as the information of the card owner of the D card 10, it is possible to reliably prevent the forgery and unauthorized use of the card. Further, since such data is used as the data for forming the three-dimensional model of the person, the amount of data viewed from the entire circumference is much smaller than that of recording a moving image of the head taken from the entire circumference. The image can be reproduced.

Further, the operator of the card processing device 20 is
Since the face of the owner recorded in the D card 10 can be displayed on the display 25 as an image viewed from an arbitrary direction, is the card user really the owner of the ID card 10? Can be confirmed easily and surely.

<Specific example 2> In this specific example 2, the standard face wire frame data is stored in advance in the card processing device to reduce the amount of data to be recorded on the ID card.

<Structure> FIG. 8 is a block diagram of the card processing system of the second specific example. The system shown is an ID card 1.
0a and the card processing device 20a, and this configuration is the same as that of the first specific example.

The ID card 10 is a card, such as a credit card, which requires confirmation that the user is who he / she is at the time of use, like the first embodiment. The three-dimensional shape information is used instead of the wireframe data 11 in the first embodiment. Characteristic data 13 is recorded as. The characteristic data 13 is the coordinate values of some vertices in a predetermined wire frame and the vertical and horizontal scale values. These values are called feature points, and are used to specify the position and shape of the nose, eyes, mouth, etc., and the number thereof is much smaller than that of the wireframe data 11. Further, the image data 12 is a two-dimensional image of a face as in the first specific example.

The card processing device 20a comprises a card reading device 21, a read data memory 22, a viewpoint changing command section 23, an image generating section 24a, a display 25, a standard wireframe data storage section 26, and a wireframe deforming section 27. Here, since the card reading device 21 to the viewpoint changing command unit 23 and the display 25 are the same as those in the specific example 1, the same reference numerals are given and the description thereof will be omitted.

The standard wireframe data storage unit 26 is
It is a memory that stores standard wireframe data. This standard wireframe data is similar to the wireframe data 11 of the specific example 1 shown in FIG. 2, but the vertex coordinates for the average head shape of a plurality of persons, not a specific individual. They are data and link data. The wire frame deforming unit 27 has a function of deforming the standard wire frame data based on the characteristic data 13 read from the read data memory 22 and reconstructing the wire frame of the head of the owner of the ID card 10a. There is. In addition, the image generation unit 24 a is similar to the specific example 1 based on the wire frame of the head of the card holder reconstructed by the wire frame deformation unit 27 and the image data stored in the read data memory 22. It has the function of performing processing.

<Operation> FIG. 9 is an operation flowchart of the card processing apparatus 20a according to the second specific example. here,
Steps S1, S3, and S4 are the same as the processing of steps S1, S2, and S3 in the first specific example.

In the wire frame deformation process in step S2, the standard wire frame is deformed based on the characteristic data 13 stored in the read data memory 22. FIG. 10 is an explanatory diagram of a wire frame deformation process. Since there are individual differences in the size of the head itself, first, the feature data 1 stored in the read data memory 22 is stored.
Out of 3, the size of the entire standard wireframe is changed using the data regarding scaling. For example, in the feature data 13, when the vertical scale is 0.65 and the horizontal scale is 0.70, the standard wire frame is multiplied by 0.65 in the vertical direction and 0.70 in the horizontal direction. And change the size of the standard wireframe.

Next, the coordinates of the vertices are moved according to the coordinate values described in the characteristic data 13. FIG. 11 is an example of data in the characteristic data 13. In the vertex coordinate data data of the standard wireframe data, each vertex of the wireframe is assigned a unique vertex number. Which vertex of the standard wireframe is used as a feature point that serves as a reference for deformation of the wireframe is It is predetermined. Then, when the coordinates as shown in FIG. 11 are written in the feature data 13, the vertices with the vertex numbers α to ω of the standard wire frame after the size change are written in FIG. 11. Move to the coordinate you are in. As for the vertices other than the feature points, for example, when the vertices α, β, and γ each form a triangular vertex as shown in FIG. 10, the vertex i in the range surrounded by the vertices α, β, and γ is , Vertices α, β, γ move according to the moving direction and the respective distances.

For example, the vertices α, β, γ are A,
If it moves to B and Γ, the vertex i is (| αi | / | AI |) = (| βi | / | BI |) =
Move to the vertex I that satisfies (| γi | / | ΓI |). However, the notation | αi | represents the distance between α and i. That is, the triangle αβ of the vertex i
The vertex i is moved to the vertex I so that the relative position in γ and the relative position of the vertex I in the triangle ABΓ are equal.

In this way, by changing the coordinates of all the vertices of the standard wireframe, the three-dimensional wireframe model of the head of the authorized owner of the ID card 10a is reconstructed, and the subsequent process is By performing the same as in Example 1, the face image of the ID card owner is synthesized.

<Effect> As described above, according to the second specific example, the standard wireframe data and the ID card 10 are used.
By deforming the standard wire frame based on the information in a, the card processing device 20a has a function of reconstructing the three-dimensional model of the head of the cardholder, and the standard in the ID card 10a. Since only the information (0 feature data 13) for deforming the wire frame is recorded, the amount of recorded information in the ID card 10a can be reduced.

Further, in the second specific example, the vertex number of the feature point is not described in the ID card 10a, and which vertex is used as the feature point is changed for each individual, and it is a secret of the card company. If the information is stored, the effect of preventing forgery of the ID card 10a can be further enhanced.

<< Usage Mode >> The card processing system of the present invention is not limited to the above specific examples. For example, in the above specific example, the data for the face image to be recorded in the ID cards 10 and 10a is stored in the form of a digital signal. However, for example, the image data 12 is two-dimensional as shown in FIG. It is displayed as an image and this is displayed on the card processing device 20.
A scanner may be prepared on the (20a) side, optically read, and CG is synthesized from this signal.
By doing so, the amount of data recorded in the ID card 10 (10a) can be further reduced.

The card user may be identified by the card processing device 20 (20a) instead of the operator. For example, some cameras are installed at a place where the card processing device 20 (20a) is present, and the ID card 10 (10
a) was taken from several directions and these images and C
By performing pattern matching with the G image, it is possible to determine whether the card user is an authorized user.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a card processing system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an example of wireframe data in Example 1 of the present invention.

FIG. 3 is a diagram showing an example of image data in Example 1 of the present invention.

FIG. 4 is an explanatory diagram of a usage state of the card processing system of the present invention.

FIG. 5 is a flowchart showing an operation of the card processing apparatus according to the first embodiment of the present invention.

FIG. 6 is an explanatory diagram (No. 1) of face image composition in the card processing system of the present invention.

FIG. 7 is an explanatory diagram (No. 2) of face image composition in the card processing system of the present invention.

FIG. 8 is a configuration diagram of a card processing system according to a second specific example of the present invention.

FIG. 9 is a flowchart showing an operation of the card processing apparatus according to the second embodiment of the present invention.

FIG. 10 is an explanatory diagram of a wire frame deforming process according to the second example of the present invention.

FIG. 11 is a diagram showing an example of characteristic data according to a second specific example of the present invention.

[Explanation of symbols]

 10, 10a ID card 11 Wireframe data (three-dimensional shape information) 12 Image data 13 Characteristic data 20, 20a Card processing device 21 Card reading device 23 Viewpoint change command unit 24, 24a Image synthesis unit 25 Display 26 Standard wireframe data storage Part 27 Wireframe deformation part

Claims (4)

[Claims] 1. An ID comprising three-dimensional shape information of a cardholder's head and image data of the head.
card. 2. The ID card according to claim 1, wherein the three-dimensional shape information is wireframe data and the image data is an image of the entire circumference of the head. 3. A card reading device for reading the three-dimensional shape information of the head of the card holder stored in the ID card and the image data of the head, and a viewpoint change command unit for designating arbitrary viewpoint position data. And a three-dimensional model of the cardholder is restored based on the three-dimensional shape information and image data read by the card reading device, and the viewpoint specified by the viewpoint change command unit for this three-dimensional model. A card processing device comprising: an image generation unit that generates a face image viewed from a position; and a display that displays the face image generated by the image generation unit. 4. An ID card having characteristic data of the head of the cardholder and image data of the head, and a card processing device, wherein the card processing device is stored in the ID card. A card reading device for reading the feature data and the image data of the head, a viewpoint change command unit for designating arbitrary viewpoint position data, and a standard three-dimensional shape information storage unit for storing standard three-dimensional shape information of the head. A wireframe deforming unit that deforms the standard three-dimensional shape information with the characteristic data read by the card reading device to reconstruct the three-dimensional shape information of the head of the cardholder; Based on the three-dimensional shape information reconstructed by the transformation unit and the image data, the three-dimensional model of the cardholder is restored, and the viewpoint change command is applied to the three-dimensional model. A card processing system comprising: an image generation unit that generates a face image viewed from a viewpoint position designated by the command unit; and a display that displays the face image generated by the image generation unit.