JP2003087551A - System and method for processing image - Google Patents

Abstract

PROBLEM TO BE SOLVED: To certify property of a photograph image by collectively printing the photograph image and an image showing data. SOLUTION: A certificate photograph 64 generated with an image processing method related to this invention, a first digital code image 600 showing personal information with visible resolution is attached to, for example, a background part (A) and hair part (B) which do not include characteristics of a person to be photographed so much, and a second digital code image 620 showing personal information with invisible resolution is attached to a facial part (C) including many characteristics of the person to be photographed. The characteristics of both digital code images 600 and 620 are utilized and the identification property of the certificate photograph itself can also be maintained by attaching both digital code images 600 and 620 to different parts of the certificate photograph 64 in this way. The certificate photograph 64 produced by the image processing method related to the invention is, for example, pasted on an identification card to use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing system and method for adding data to an image such as a photograph and taking out the added data.

[0002]

2. Description of the Related Art Printers capable of printing photographs with high quality are
Very commonly used. In addition, JP-A-9-172
Japanese Patent No. 537 discloses a technique of converting various data into an image, printing the image, and reproducing the original data from the printed image. On the other hand, for example, there is a problem that a photograph of a stolen passport is exchanged and used illegally.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. A photographic image and an image showing data are printed together to check the validity of the photographic image. An object of the present invention is to provide an image processing system and a method thereof that can be proved.

[0004]

[Image Processing System] In order to achieve the above object, an image processing system according to the present invention comprises a target image generating means for generating a first target image to which data is added. First encoding means for encoding the first additional data to be added to the target image to generate a first code indicating the first additional data as an image of a first resolution, The second additional data, which is the same as or different from the first additional data, is encoded to generate the second additional data.
Second additional data generating means for generating a second code indicating the additional data of the first resolution as an image having a second resolution different from the first resolution, and the generated first code for the first target. Image adding means for adding to the first part of the image, adding the generated second code to a second part different from the first part of the target image to make a second target image; And an image addition processing apparatus having the first part and the second part of the second target image, or any one of these, and a code separation for separating the first code and the second code or any one of these. Means, and first decoding means for decoding the first additional data and the second additional data or any of these from the separated first code and second code or any of these. Have.

Preferably, the first target image is an image showing a specific person in an identifiable manner.

[0006] Preferably, the first additional data and the second additional data are data indicating attributes of the specific person.

Preferably, the first additional data and the second additional data are the specific person's name, date of birth, address, telephone number, mail address, work place, educational background,
Includes data showing school, PIN, nationality, place of birth, domicile, medical history and handwriting or any combination thereof.

Preferably, the first additional data and the second additional data include data indicating a physical characteristic of the specific person.

Preferably, the image of the first resolution displays the first code in a visible size, and the image of the second resolution is larger than the visible size of the second code. Is also displayed small.

Preferably, the image addition processing device encrypts the first additional data and the second additional data by using an encryption key to respectively generate the first encrypted additional data and the second encrypted additional data. Further includes an encryption unit for converting the encrypted additional data into the first encoding unit and the second encoding unit of the image addition processing unit, the first encryption additional data and the second encryption unit. The additional data is encoded, and the first decryption means of the decryption processing device uses the separated first code and second code or any one of these codes to generate the encrypted first encrypted additional data. And the second encrypted additional data or any one of them is decrypted, and the decryption processing device uses the decrypted first encrypted additional data and the second encrypted additional data or any one of the decrypted data. Encryption key Further comprising a second decoding means for decoding using a corresponding decryption key.

[Image Addition Processing Apparatus] Further, the image addition processing apparatus according to the present invention is a target image generating means for generating a first target image to which data is to be added, and is added to the target image. A first encoding unit that encodes the first additional data to generate a first code indicating the first additional data as an image of a first resolution, and the same or different from the first additional data. Second encoding means for encoding the second additional data to generate a second code indicating the second additional data as an image having a second resolution different from the first resolution; The first code
The second target image is added to the first part of the first target image, and the generated second code is added to the second part different from the first part of the target image to obtain the second target image. Image adding means for

[Decoding Processing Apparatus] The decoding processing apparatus according to the present invention is a decoding processing apparatus for decoding a second target image, wherein the image addition processing apparatus is the first target to which data is added. Of the target image, and encodes the first additional data added to the target image to generate a first code indicating the first additional data as an image of a first resolution. Second additional data that is the same as or different from the first additional data is encoded to generate a second code that indicates the second additional data as an image of a second resolution different from the first resolution, The generated first code is added to a first part of the first target image, and the generated second code is added to a second part different from the first part of the target image. Generated by adding and making it the second target image It is, first and second portions of the second target image, or any of these, the first
Code and second code or code separation means for separating either of them, and the first additional data and the second code from the separated first code and / or second code. Additional data or a first decoding means for decoding any of these.

[Image Processing Method] Further, the image processing method according to the present invention generates a first target image to which data is to be added, and encodes the first additional data to be added to the target image. To generate a first code indicating the first additional data as an image of a first resolution, encode second additional data that is the same as or different from the first additional data, and generate the second additional data. A second code indicating the additional data as an image having a second resolution different from the first resolution is generated, and the generated first code is added to the first portion of the first target image. And the generated second code is
A second target image is added to a second part different from the first part of the target image, and a first part and a second part of the second target image, or one of these parts, 1 code | symbol and 2nd code | symbol or these are isolate | separated, From said 1st code | symbol and 2nd code | symbol or these which were separated, the said 1st additional data and 2nd additional data Decode any of these.

[Image Addition Processing Method] Further, the image addition processing method according to the present invention generates the first target image to which data is to be added, and adds the first additional data to the target image. To generate a first code that indicates the first additional data as an image of a first resolution, encode second additional data that is the same as or different from the first additional data, and generate the first additional data. A second code indicating the second additional data as an image having a second resolution different from the first resolution is generated, and the generated first code is used as a first portion of the first target image. To the second target image by adding the generated second code to a second part of the target image different from the first part.

[Decoding Processing Method] Further, a decoding processing method according to the present invention is a decoding processing method for decoding a second target image, wherein the second target image is an image having an image addition processing device. A decoding processing device of a processing system,
The image addition processing device is a first target of adding data.
Of the target image, and encodes the first additional data added to the target image to generate a first code indicating the first additional data as an image of a first resolution,
The second additional data, which is the same as or different from the first additional data, is encoded to convert the second additional data into the first additional data.
A second code shown as an image of a second resolution different from that of the first code, and the generated first code is converted to the first code.
To the first part of the target image of the
Is added to a second portion different from the first portion of the target image to obtain the second target image, and the first portion and the second portion of the second target image are generated. Of the first code and the second code or any of these, and from the separated first code and the second code or any of these, the first code and the second code or any of these Additional data and second additional data, or any one of them.

[First Program] Further, a first program according to the present invention comprises a step of generating a first target image to which data is added, and a first program added to the target image. Encoding additional data to generate a first code indicating the first additional data as an image of a first resolution; and encoding second additional data that is the same as or different from the first additional data. And generating a second code indicating the second additional data as an image of a second resolution different from the first resolution; and generating the first code with the first target. First in the image
To the second computer, and adding the generated second code to a second portion different from the first portion of the target image to obtain a second target image. And executing the first portion and the second portion of the second target image.
Separating the first code and the second code or any one of them from the part or any one of the above, and from the separated first code and the second code or any of the above, Causing the second computer to execute the first additional data, the second additional data, or the step of decoding any of these.

[Second program] A second program according to the present invention is a step of generating a first target image to which data is added, and a first program added to the target image. Encoding additional data to generate a first code indicating the first additional data as an image of a first resolution; and encoding second additional data that is the same as or different from the first additional data. And generating a second code indicating the second additional data as an image of a second resolution different from the first resolution; and generating the first code with the first target. First in the image
And adding the generated second code to a second portion different from the first portion of the target image to obtain a second target image.

[Third Program] Further, a third program according to the present invention is a program for decoding a second target image, wherein the second target image is an image having an image addition processing device. A decoding processing device of a processing system, wherein the image addition processing device generates a first target image to which data is added, and encodes first additional data to be added to the target image. , The first additional data is generated as a first resolution image as an image, and second additional data that is the same as or different from the first additional data is encoded to generate the second additional data. Is generated as an image of a second resolution different from the first resolution, and the generated first code is added to the first portion of the first target image, The generated second code is The first part and the second part of the second target image, or the first part and the second part of the second target image, which are generated by adding the second part different from the first part of the target image to the second target image. Separating the first code and / or the second code from any of the above, and adding the first addition from the separated first code and / or the second code. Causing the computer to perform the steps of decoding the data and / or the second additional data.

[Identification Card] The identification card according to the present invention is a person image for identifying a person, a first additional image showing first additional data at a first resolution, and the first additional data. The second additional data, which is the same as or different from
And a second additional image shown in a second resolution different from that of the personal identification image, wherein the first additional image is added to the first portion of the human image. Then, the second additional image is added to a second portion different from the first portion of the person image.

[Description of Image Processing System] The image processing system according to the present invention will be described below with reference to examples. Note that the following examples are intended to embody the present invention and help understanding thereof, and are not intended to limit the technical scope of the present invention.

[Target Image Generating Means] In the image addition processing apparatus, the target image generating means is, for example, an image photographing apparatus such as a digital camera, photographs a person's face, and specifies it in a passport or the like by this photograph. An image (first target image) of a facial photograph of a person to be performed is generated.

[First Encoding Means] The first encoding means is, for example, personal information such as the name, the date of birth, and the place of birth of the person specified by the image of the face photograph (first target image). The (first additional data) is encoded.

By this encoding, each bit of the personal information (first additional data) is, for example, a relatively coarse resolution that allows the presence of the personal information (first additional data) to be recognized when visually observed. Associated with each block, and each block having a predetermined size is changed in accordance with the value of the bit to display the personal information (first additional data) as a digital code (first code). ) Is generated.

[Second Encoding Means] The second encoding means encodes the personal information (second additional data), and the personal information (second additional data) can be visually inspected. A digital image displaying personal information (second additional data) as an image by changing each of the blocks in association with a block having a relatively high resolution such that the existence of the (second additional data) is unknown. Generate a code (second code). Even if the personal information (second additional data) encoded by the second encoding means is all the same as the personal information (first additional data) encoded by the first encoding means, They may be completely different or may partially overlap.

[Image Addition Processing Means] The image addition processing means visually recognizes the first code generated as described above, for example, the background portion and the hair portion of the face photograph, and the like, as a digital code (first code). Even if the presence of is identified, it is added to the portion (first portion) that does not impair the distinguishability of the facial photograph. Further, the image addition processing means identifies the face photograph when the second code having the high resolution is added to the second code having the coarse resolution, for example, the central portion of the face of the face photograph. That adversely affects the sex, but does not cause a problem in the distinctiveness of the face photograph when the second code having a high resolution is added (the second portion (≠ the first portion))
Added to. Thus, the image of the face photograph (first target image) becomes the second target image by adding the first code and the second code.

[Code Separating Means] In the decoding processing device,
The code separating means includes a first portion and a second portion of the face photograph (second target image) to which the first code and the second code are added.
The first code and / or the second code and / or any of these.

[First Decoding Means] Further, the first decoding means is an individual coded by the first coding means from the separated first code and second code or one of them. The information (first additional data), the personal information (second additional data) encoded by the second encoding means, or any one of them is decoded.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Background of the Invention] First, the background of the present invention will be described in order to help understanding of the present invention. ID photos attached to driver's licenses, passports, identification cards (ID cards), etc. will be submitted along with these application documents. As the ID photo, for example, an image taken in a photo studio or an image taken by an automatic photographing device is used, and it is usual that only the face image of a person is shown in the ID photo. On the other hand, driver's license, passport, identification card, etc. (hereinafter, like these,
Documents to which a photograph is attached and which is used to identify a person
Regarding cards, etc., simply referred to as “identification card”), the ID photos attached to these may be reprinted and used illegally, but since the ID photos so far have only information on images. , It is difficult to authenticate / judg whether the owner of the ID card is valid. Therefore, even if it can be judged that the photo of the ID card and the face of the owner are the same, it is in a strict sense to judge whether the person specified by the ID card matches the owner. I can't.

On the other hand, by associating a face photograph with personal information and reading this personal information using a dedicated reading device, the person specified by the photograph and the person specified by the description of the ID card There is a method of determining whether and match. As a method of associating a face photograph and personal information suitable for such an application, for example, a method of printing personal information on a photograph with an invisible material, a method of latently adding personal information by giving a characteristic value to a print screen shape, and the like. Can be mentioned. Alternatively, there is also a method in which personal information is converted into a one-dimensional or two-dimensional digital code symbol such as a bar code and added to a part different from the face photograph.

On the other hand, as a method of printing a photograph attached to an identification card or the like, a method of using a silver salt photographic technique has been generally used so far, but in recent years, a sublimation type or an ink jet type has been used with the improvement of performance. Printing methods using printers have become popular. However, in the sublimation type printer, the ink is likely to spread before reaching the output paper, so the sublimation type printer is not suitable for forming minute dots of several tens of μm to 100 μm. Similarly, normal inks used in inkjet printers are vulnerable to water wetting and deteriorate over time. Further, since ink bleeding easily occurs in the ink jet type printer, the ink jet type printer is not suitable for forming a minute pattern.

On the other hand, as a method for printing a minute pattern with good contrast, a method using a thermal paper type printer or a thermal transfer type printer can be mentioned. Moreover, in recent years, thermal paper type and thermal transfer type printers have become popular.

However, the paper that can be printed by the thermal paper type printer is limited to the special paper, and this paper cannot be stored for a long time. In addition, the thermal transfer type printer is 300 dpi
A fine pattern can be formed with a high resolution of about 600 dpi, but the structure of the print head becomes a problem in order to obtain a higher resolution.

On the other hand, the method of printing personal information on a photograph with an invisible material and the method of latently adding personal information by giving a characteristic value to the shape of the printing screen visually recognizes whether personal information is added to the ID card. Can not. Therefore, when using these methods, all IDs are read even if it is necessary to find a modification of the ID by simply pasting or copying a photo that does not consider invisible personal information. It needs to be put on the device, which is very troublesome. Alternatively, when these methods are used, it is impossible to detect even the alteration of the ID card by simply replacing or copying the photograph without a reading device.

If personal information is converted into a digital code symbol such as a bar code and added to a portion of the personal information medium different from the face photograph, the addition of the digital code symbol can be visually recognized. However, since it is difficult to visually distinguish the digital code symbols, similar to the method of printing personal information on a photo with an invisible material, this method also allows simple photo replacement / copying without a reading device. Even if the ID is altered by copying, it cannot be seen. Furthermore, when creating a personal authentication medium, personal data must be provided to a third party, and personal data may leak due to carelessness.

Therefore, by making it possible to visually recognize that personal information is added to the ID card, it is difficult for the modifier to change the ID card by a simple method such as replacement or copying of photographs. It is desired to realize a method capable of suppressing the modification itself by showing it to the contrary and making such modification actually difficult to improve the security of the identification card.

In such a method, the same information as the image for displaying the information for identifying the person shown in the ID photo at a coarse resolution that is visible to the ID photo etc. Can be realized by adding an image to be displayed at a resolution that is invisible to the naked eye. In an image displaying information at a visible resolution, it is desirable that the size of each pixel block indicating information is 127 μm to 508 μm as the width in the main scanning direction. The "width in the main scanning direction" can be defined as the length of the side of the rectangle parallel to the main scanning direction when the pixel block is rectangular. If the pixel block is set to this size, the image resolution can be set to a value that clearly shows the existence of information to the viewer.
It is possible to discourage the viewer from changing. Moreover, since it is not necessary to use a reading device in order to recognize only the presence of information, even if the reading device is not used, it is possible to change the simple identification card by replacing the photograph, etc.
Easy to spot.

In an image in which information is displayed at an invisible resolution, the size of each pixel block indicating information is, for example, 21 μm to 127 μm in width in the main scanning direction.
It is desirable to set m. If the pixel block is made minute to this extent, the viewer cannot visually recognize the existence of information, and therefore the amount of information that can be recorded can be increased, and therefore, information regarding security can be increased.

On the other hand, in the ID photograph, an image of the face including characteristic parts of the face of the subject, such as eyes, nose, mouth, ears, and kuroko, bruises, and a rough image showing information visually If the images of the resolution overlap, these characteristic parts may be hidden or hard to see, and it may be difficult to identify the person by the ID photo. Therefore,
An image with a high resolution that makes information invisible is added to such a characteristic part, and even in the background or hair part, even if it is hidden a little, it does not affect the person's identification by the photograph. By adding an image with a coarse resolution that shows information visually, it is possible to prevent such problems, and
Both images can be used effectively.

[Embodiment of the Present Invention] An embodiment of the present invention will be described below.

[Identification Photograph Created by Image Processing Method According to the Present Invention] FIG. 1 is a digital code used in the image processing method according to the present invention and showing personal information (encrypted personal information) at a visible resolution. It is a figure which illustrates the identification photograph 60 to which the image 600 was added. FIG. 2 is a diagram showing an example of a certification photograph 62 which is used in the image processing method according to the present invention and to which a digital code image 620 showing personal information (encrypted personal information) at an invisible resolution is added. Note that, in FIG. 2, for convenience of description, the resolution of the certification photograph 62 is coarse enough to be visible. FIG. 3 is a block diagram of the image processing method according to the present invention.
And the digital code images 600 and 620 shown in FIG.
It is a figure which illustrates the identification photograph 64 created using.
FIG. 4 shows an ID card 6 with the ID photo 64 shown in FIG.
It is a figure which illustrates 6.

As illustrated in FIG. 1, the first personal information (encrypted personal information) is encoded, and the value of each bit is set to the width of the pixel block in the main scanning direction between 127 μm and 508 μm described above. The length can be varied and represented as a digital code image 600 with visible resolution. Similarly, as illustrated in FIG. 2, personal data indicating the second personal information (encrypted personal information) is encoded, and the value of each bit is set to the pixel block of 21 μm to 127 μm described above. The width in the main scanning direction can be changed to represent the digital code image 620 with an invisible resolution.

Here, the first personal information represented as the digital code image 600 (first encrypted personal information)
If the second personal information (second encrypted personal information) represented as the digital code image 620 is the same as the personal information of the person to be specified by these, the same or different However, there is a possibility that some of them will overlap.

For example, when the first personal information and the second personal information are different, the first personal information represented by the digital code image 600 having a small capacity because it is represented by a large pixel block is not included in the first personal information. , The second personal information represented by the digital code image 620, which contains only relatively small size information such as the name and date of birth of the person to be photographed, and is represented by a small pixel block, is large. In some cases, only information having a relatively large size is included, such as an image of the fingerprint of the subject. In addition, for example, when the first personal information and the second personal information partially overlap, the first personal information is information of a relatively small size such as the name and date of birth of the person to be photographed. In some cases, the second personal information includes the name and fingerprint image of the person to be photographed.

The ID photograph 64 generated by the image processing method according to the present invention is, for example, a digital code image 600 (see FIG. 1) on the background portion (A) or the hair portion (B) which does not include many features of the person to be photographed. ) Is added, and a digital code image 620 (FIG. 2) is added to the face portion (C) that includes many features of the subject. In this way, by attaching both of the digital code images 600 and 620 to different portions of the ID photo 64, it is possible to make use of the features of both and maintain the identification of the ID photo itself. ID photo 64 created by the image processing method according to the present invention
Is used by being attached to an identification card 66, for example, as shown in FIG.

[Image Processing Apparatus 1] The hardware configuration of the image processing apparatus 1 for producing the identification photograph 64 shown in FIG. 3 will be described below. FIG. 5 is a diagram showing the configuration of the image processing apparatus 1 that realizes the image processing method according to the present invention. As shown in FIG. 5, the image processing apparatus 1 is an image processing apparatus main body 10 including a CPU 100 and a memory 102, a flexible disk device, a CD device, a hard disk device, and the like. It is composed of a recording device 110 for reading, a display / input device 120 including a CRT display device and a keyboard, a digital camera 122, a scanner 124 and a printer 126. That is, the image processing apparatus 1 has a component as a general computer including devices such as the digital camera 122, the scanner 124, and the printer 126 necessary for taking and printing the ID photo.

[Digital Camera 122] The digital camera 122 takes a face photograph of the person to be photographed and generates image data for an identification photograph. In addition, the digital camera 122
The physical characteristics of the photographed person, such as the fingerprint, voice print, palm print and iris of the photographed person, and other information useful for identifying the photographed person, such as a signature, are photographed and their image data is generated. In addition, the digital camera 122 takes a certification photograph 64 (FIG. 3) to which personal information and the like are added, and generates image data thereof.

[Scanner 124] The scanner 124 reads a face photograph taken in advance, and the digital camera 122
Similarly, the image data for the ID photograph is generated. Also,
The scanner 124 reads the above-described image of the physical characteristics of the subject and the image useful for identifying the subject, and, like the digital camera 122, generates image data thereof. Further, the scanner 124 reads the identification photograph 64 (FIG. 3) to which the personal information and the like are added and, like the digital camera 122, generates the image data thereof.

[Printer 126] The printer 126 is, for example, a printer disclosed in “Driving Method of Matrix-Drive VCSEL Array for Laser Printing (Japan Hardcopy 2000 Proceedings p.117, Ashikaga et al., 2000)”, and at least , The image is printed in a resolution necessary for printing the digital code image 620 (FIG. 2) that invisiblely shows the second personal information (second encrypted personal information). That is, the printer 12
6 is a digital code image 620, as described below.
The minimum pixel block (width of 21 μm in the main scanning direction) is capable of printing with a finer resolution.

As an exposure method for printing minute pixels that cannot be output by a general printer, for example, a two-dimensional array disclosed in the above “Driving method of matrix driving VCSEL array for laser printing” is disclosed. There is an exposure method for enlarging and projecting the light emission pattern of the surface emitting laser array thus formed on the photoconductor. According to this method, the spot diameter of the laser beam on the photoconductor can be made a minute spot of about 21 μm, so that an exposure image with high resolution can be obtained. With conventional thermal transfer printers, 42μ
According to this exposure method, one dot size can be reduced to 60% as compared with the limit of the minute dot of m.

As a method of developing such an exposed image, there are generally an electrophotographic method and a transfer method using a donor film. When the printer 126 is an electrophotographic printer, the face image is YMC based on the latent image formed on the photoconductor by the image forming apparatus using the laser.
An image is formed on the member with the K toner, and an image is formed with the K toner on the pixel to be changed. Note that the pixel change may be formed with a single color toner other than the K toner, and the YM
You may form with the color which CK mixed. Printer 12
When 6 is a transfer type printer, an image is formed on a donor film by an image forming apparatus using a laser, and the ink of the donor film is transferred onto a member by heat to print as in the electrophotographic method. To do.

[Software] The software loaded in the memory 102 (FIG. 5) of the image processing apparatus 1 via the recording medium 112 or the like and executed by the image processing apparatus 1 will be described below.

[Image Addition Program 2] FIG. 6 is a diagram showing the configuration of the image addition program 2 which is executed in the image processing apparatus 1 shown in FIG. 5 and creates the identification photograph 64 shown in FIG. As shown in FIG. 6, the image addition program 2 includes a UI control unit 200, a camera control unit 210, an image compression unit 212, an internal data generation / holding unit 220, an encryption unit 222, a first encoding unit 224-1, Second encoding unit 224-2, area identifying unit 260, code adding unit 2
62 and a print controller 270. The image adding program 2 uses these components to take or capture a facial photograph of the person to be photographed to create image data for an identification photograph, and to the created image data, the first personal information (first A digital code image 600 (FIG. 1) showing the encrypted personal information) at a visible resolution, and a second
A digital photo code image 620 (FIG. 2) showing the personal information (second encrypted personal information) of No. 1 in a non-visible resolution is added to create the certification photograph 64.

[UI Control Unit 200] UI Control Unit 200
Displays a user interface image (UI image; not shown) on the display / input device 120, accepts an operation performed on the UI image, and controls each component of the image addition program 2. In addition, the UI control unit 200
Accepts personal information input to the display / input device 120 and an image (fingerprint, signature, etc.) indicating the person to be photographed input from the camera control unit 210, and receives the digital code image 600 (FIG. 1). The first personal information indicated by and the second personal information indicated by the digital code image 620 (FIG. 2) are generated and output to the encryption unit 222.

The personal information is input to the display / input device 120 by the person to be photographed, as described above. Personal information includes the blood type, date of birth, telephone number, place of origin of the photographed person, which cannot be easily known by a third party, in addition to the items (name and address) listed on a general identification card.
Information such as emergency contact information, parents' names, educational background, school, workplace, work address and email address, images of physical characteristics of the subject's fingerprints, voiceprints, palm prints and iris, and signature of the subject The UI control unit 200 selects the necessary ones from these, and generates the first personal information and the second personal information, including images useful for identifying the person to be photographed.

[Camera Control Unit 210] Camera Control Unit 21
0 is the digital camera 122 (scanner 124; FIG. 5)
And the like to take a photograph of the face of the person to be photographed, to generate image data for an identification photograph, and to compress the image data into the image compression unit 2.
12 (and the code addition unit 262).
In addition, the camera control unit 210 controls the digital camera 122.
The image of the physical characteristics of the person to be photographed and the image specifying the person to be photographed, which are input from the (scanner 124), are output to the UI control unit 200.

The image compression section 212 is a camera control section 210.
Image data for ID photo input from
The EG method divides the image data into pixel blocks, compresses the image data in units of the pixel blocks to generate compressed image data, and the encoding units 224-1 and 224.
Output to -2.

[Internal Data Generation / Holding Unit 220] The internal data generation / holding unit 220 uses the date and time of photographing the ID photo 64 (FIG. 3), the serial number used to specify the image processing apparatus 1, and the ID photo 64. The first personal information and the second personal information indicated by the digital code images 600 and 620 added to the
Generates and retains classification information that classifies the personal information of. Further, the internal data generating / holding unit 220 holds an encryption key (public key) that is input via the display / input device 120 or the like and is used in the encryption processing in the encryption unit 222. These pieces of information held by the internal data generation / holding unit 220 are output to the encryption unit 222.

[Encryption Unit 222] The encryption unit 222 is
The first personal information and the second personal information input from the I control unit 200 include, for example, the internal data generating / holding unit 22.
Internal information such as the date and time of photographing input from 0 is added. Further, the encryption unit 222 encrypts the first personal information and the second personal information to which the internal information is added, using the encryption key input from the internal data generation / holding unit 220, for example, and Of the encrypted personal information and the second encrypted personal information. The encryption unit 222 generates the first
And outputs the generated second encrypted personal information to the encoding unit 224-1.
Output to 24-2.

[Encoding Unit 224-1] The first encoding unit 224-1 stores the compressed image data input from the image compression unit 212 and the first encrypted personal information input from the encryption unit 222. A digital code image 600 (FIG. 1) that is encoded and shows the first encrypted personal information at a resolution that can be visually recognized as a change in the pixel pattern is created, and is output to the code adding unit 262.

[Encoding Unit 224-2] The second encoding unit 224-2 stores the compressed image data input from the image compression unit 212 and the second encrypted personal information input from the encryption unit 222. The digital code image 620 (FIG. 2) that is encoded and shows the second encrypted personal information at a resolution that is invisible as a change in the pixel pattern is created and output to the code adding unit 262.

[Format of Digital Code Images 600 and 620] In the digital code images 600 and 620, for example, the line width of a parallel screen (the line width of the screen on which an image is formed and corresponds to the pixel block). The first encrypted personal information and the second encrypted personal information are expressed by the change of. The “line width of the parallel line screen” is the line width of the screen on which an image is formed, and corresponds to the pixel block. Here, as described above, the first
The width of the pixel block of the digital code image 600 in the main scanning direction is about 127 μm to 508 μm, and the width of the pixel block of the second digital code image 620 in the main scanning direction is about 21 μm to 127 μm.

[Area Discriminating Section 260] Area discriminating section 260
Processes the image data for the ID photograph input from the camera control unit 210, identifies the background and the hair portion (portions A and B in FIG. 1 etc.) and the face (also the portion C), and identifies the background and the hair portion. The part is the first digital code image 600
(FIG. 1) is an area to be added, and the face part is determined to be an area to which the digital code image 620 (FIG. 2) is to be added,
The judgment result is output to the code adding unit 262.

[Code addition section 262] Code addition section 26
2 is the area identification unit 260 of the image data for the ID photograph.
The digital code image 600 is added to the area (portions A and B in FIG. 1) determined to be the area to which the first digital code image 600 should be added, and the area is identified in the image data for the ID photo. The digital code image 620 is added to the area (the portion C in FIG. 1 and the like) which is determined to be the area to which the second digital code image 620 should be added by the unit 260, and the print image of the certification photograph 64 (FIG. 3) Data is generated and output to the print control unit 270.

[Print Control Unit 270] The print control unit 270 controls the printer 126 to print the print image data and create the identification photograph 64 (FIG. 3).

[Decoding / Display Program 3] FIG.
Is executed by the image processing apparatus 1 shown in FIG. 3 to decrypt and display personal information from the ID photo 64 shown in FIG.
It is a figure which shows the structure of the display program 3. As shown in FIG. 7, the decoding / display program 3 includes a UI control unit 300,
Scanner / camera control unit 310, area identification unit 312, image separation unit 314, first decoding unit 320-1, second decoding unit 320-2, decryption key holding unit 322, decryption unit 3
24, a display image generation unit 330 and a storage control unit 340. The decryption / display program 3 reads the certification photograph 64 (FIG. 3) via the digital camera 122 or the scanner 124 (FIG. 5) by these components, and the first digital code image 600 attached to the certification photograph 64. And the first personal information and the second personal information are decoded from the digital code image 620 and displayed on the display / input device 120.

[UI Control Unit 300] FIG. 8 is a diagram showing an example of an image 68 in which the display screen for displaying the decrypted personal information is added to the ID photo 64 shown in FIG. The UI control unit 300 displays a UI image (not shown) on the display / input device 120, and the display / input device 1 displays the UI image.
The operation input from 20 is accepted and each component of the decoding / display program 3 is controlled. In addition, the UI control unit 3
00 is the display image input from the display image generation unit 330 in the upper right portion (part D) of the image of the certification photograph 64 (FIG. 3) input from the scanner / camera control unit 310, as illustrated in FIG. An image 68 to which is added is generated and displayed on the display / input device 120.

[Scanner / Camera Control Unit 310] The scanner / camera control unit 310 controls the digital camera 122 and the scanner 124, captures the image of the identification photograph 64 to generate image data, and then the image separation unit 314 and the area identification. It is output to the unit 312 and the UI control unit 300.

[Area Identification Unit 312] Area Identification Unit 312
Processes the image data input from the scanner / camera control unit 310, and in the certification photograph 64, the area (the portions A and B shown in FIG. 3 etc.) to which the first digital code image 600 is added and the certification. In the photograph 64, the area to which the second digital code image 620 is added is identified, and the identification result is output to the image separation unit 314.

[Image Separating Section 314] Image Separating Section 314
Separates the area (portions A and B shown in FIG. 3 etc.) determined by the area identification unit 312 that the first digital code image 600 is added from the image data and decodes it as the first image data. It is output to the unit 320-1.
In addition, the image separation unit 314 determines from the image data that the region identification unit 312 determines that the second digital code image 620 has been added (a region A shown in FIG.
B) is separated and the decoding unit 32 is used as the second image data.
Output to 0-2.

[Decoding unit 320-1] Decoding unit 32
0-1 decrypts the first encrypted personal information from the first image data input from the image separation unit 314, and the decryption unit 3
Output to 24.

[Decoding Unit 320-2] Decoding Unit 32
0-2 decrypts the second encrypted personal information from the second image data input from the image separation unit 314, and the decryption unit 3
Output to 24.

[Decryption Key Holding Unit 322] Decryption Key Holding Unit 32
Reference numeral 2 holds a decryption key (for example, a secret key corresponding to the public key used in the image addition program 2) set from the display / input device 120 and outputs it to the decryption unit 324.

[Decryption Unit 324] The decryption unit 324 converts the first encrypted personal information and the second encrypted personal information input from the decoding units 320-1 and 320-2 into the first personal information and the personal information. Decrypt each second personal information,
The data is output to the storage controller 340 and the display image generator 330.

[Display Image Generating Unit 330] The display image generating unit 330 is the decoding unit 3 illustrated in the portion D in FIG.
A display image for displaying the first personal information and the second personal information input from 24 is generated and output to the UI control unit 300.

[Recording controller 340] Recording controller 340
Controls the recording device 110 (FIG. 5) to store the first personal information and the second personal information input from the decryption unit 324,
The recording is performed on the recording medium 112.

[Operation of Image Processing Apparatus 1] The overall operation of the image processing apparatus 1 will be described below.

[Creation of ID Photo 64] First, the operation of creating the ID photo 64 by the image adding program 2 will be described.
The camera control unit 210 of the image addition program 2 (FIG. 6)
Controls the digital camera 122 (FIG. 5) to take a facial photograph of the person to be photographed, generate image data for a certification photograph, and output the image data to the image compression unit 212. The camera control unit 210 also outputs images such as fingerprints and images input from the digital camera 122 to the UI control unit 200. The UI control unit 200 receives the input personal information and the image such as the fingerprint or signature of the person to be photographed input from the camera control unit 210, and generates the first personal information and the second personal information. , To the encryption unit 222.

The image compression section 212 compresses the image data for the ID photo to generate compressed image data and outputs it to the encoding sections 224-1 and 224-2. Encryption unit 2
22 adds, to the first personal information and the second personal information, internal information such as the date and time of photographing input from the internal data generating / holding unit 220, and further, using the encryption key, the first personal information is added. Encrypt the personal information and the second personal information of
First encrypted personal information and second encrypted personal information are created.

The encoding units 224-1 and 224-2 are
Compressed image data and first encrypted personal information and second
Of the encrypted personal information of the first digital code image 600 (FIG. 1) and the second digital code image 6
Create 20. The area identifying unit 260 identifies the background of the image data for the ID photo, the hair portion, and the face. The code adding unit 262 first detects the background and the hair of the image data according to the identification result of the area identifying unit 260.
A digital photo image 600 of No. 6 is added, and a second digital code image 620 is added to the face portion, and the ID photo 6
4 (FIG. 3) print image data is generated. The print control unit 270 controls the printer 126 to print the print image data of the identification photograph 64 generated as described above. With the above processing, the certification photograph 64 is obtained.

[Decryption / Display of Personal Information] Next, the decryption / display operation of personal information by the decryption / display program 3 (FIG. 7) will be described. The scanner / camera control unit 310 (FIG. 6) causes the digital camera 122 (FIG. 5) to capture the image of the identification photograph 64. The area identification unit 312 processes the image data of the ID photo 64 and identifies the area to which the first digital code image 600 is added and the area to which the second digital code image 620 is added.
The image separation unit 314 separates, from the image data, an area determined to have the first digital code image 600 added and an area determined to have the second digital code image 620 added. .

Decoding sections 320-1 and 320-2 respectively decode the first encrypted personal information and the second encrypted personal information from the first image data and the second image data, respectively. The decryption unit 324 receives the first encrypted personal information and the second encrypted personal information,
It decrypts the first personal information and the second personal information, and outputs them to the storage controller 340 and the display image generator 330. The display image generation unit 330 generates a display image (part D in FIG. 8) displaying the first personal information and the second personal information.

The recording control section 340 records the first personal information and the second personal information on the recording medium 112. The UI control unit 300 includes image data for ID photo,
The first personal information and the second personal information are displayed on the display / input device 120 (FIG. 5) as illustrated in FIG.
Through the above processing, the first personal information and the second personal information are decrypted and displayed.

[Uses of the image processing apparatus 1 according to the present invention
[Effect] ID photo 64 by the image processing apparatus 1 described above
To generate digital code images 600 and 620,
At the institution that uses the identification card 66 (Fig. 4) with the identification photograph 64 attached, the characteristic values associated with each other by predetermined calculation or conversion are registered in the inquiry system of the identification card 66 so that each inquiry can be made. You can check whether the ID photo is registered in the system. In addition, by describing the characteristic value in the identification card 66, it is possible to easily confirm whether the identification photograph is registered without using the inquiry system.

The characteristic value is a value obtained by calculating a change indicating 0 and a change of 1 of a pixel by a predetermined method. For example, it can be considered that the total sum of changes indicating 0 of pixels is made into a number, an alphabet, or a corresponding symbol. In this case, the collation determination may be performed at the rate at which the read value matches the inquired value or the described value.

The advantages of using the image processing apparatus 1 according to the present invention will be described below. When a third person who is very similar to the person to be photographed in the ID photo 64 tries to illegally use the ID card 66, the shooting date and time and the telephone number decrypted from the digital code images 600 and 620 read from the ID photo 64. By inquiring the user of the ID card 66 for personal information such as the Internet address and the like, it is possible to determine whether or not the user is a valid user.

Even if a third party other than the legitimate user of the ID card 66 picks up the ID card 66 and tries to read the information in the ID photo 64, the encryption key set by the image addition program 2 in the image processing apparatus 1 The part encrypted by can not be read without the decryption key. Only a very limited person can know the encryption key / decryption key, so that high security can be maintained.

Even if the encryption key is leaked, for example,
The part encrypted by the password set by the person to be photographed cannot be read without the password. Furthermore, if the pixels are changed based on personal information such as fingerprints, voice prints, palm prints and irises, or signatures, even if a third party knows this regardless of whether or not there is a password, the third party can Since it is extremely difficult to imitate a fingerprint or the like, this ID photograph cannot be used. Therefore, the pixels may be changed based on the setting of the encryption key and the password and the information unique to the individual according to the necessity of security.

Since the digital photo images 600 and 620 are present in the ID photo 64 itself, when the ID photo is to be created by the ID photo taking device to replace the ID photo 64 of the identification card 66, the date and time of shooting If the serial number is set to be automatically input to the digital code, the shooting date and time and the serial number cannot be arbitrarily changed. Therefore, if an ID photo is created after a third party obtains the ID card 66, the shooting date and time after the registration date or the issue date of the personal identification medium is described as a change in the pixels forming the face image as a digital code. Therefore, it is found that it is an unauthorized copy of the ID photo after it was issued.

When the ID photograph 64 on which the digital code images 600 and 620 are printed is created by an apparatus other than the image processing apparatus 1, the encoding method of the ID photograph 64, the data format, the encryption method, the encryption key, and other algorithms are used. If you don't get it, you can't create it. This algorithm can be known only to a very limited number of people, and even if this algorithm is leaked, if the characteristic value of the digital code is used for each specific registration agency, the ID 6
6 and the digital code image 600,
By comparing with the calculated value of 620, it is possible to confirm the authenticity of whether the identification photograph 64 was submitted at the time of application. On the other hand, even if you know the algorithm for creating the ID photo and the method for calculating the characteristic value, the digital information of the face image, the personal information, and the condition information at the time of shooting are acquired so that the characteristic value described in the personal identification medium can be obtained. It is extremely difficult to make it arbitrarily.

Further, since the ID photograph 64 includes the invisible digital code image 620, pixels cannot be copied at the resolution of a normal copying machine, so that the security is improved. Further, even if an image is captured by a scanner having a high resolution, it cannot be output by a general printer, and can be printed only by an image forming apparatus with high definition and high definition. From these points as well, ID photo 6
Unauthorized modification of 4 is very difficult.

[Modification] A modification will be described below.

[Digital Code Images 600 and 620 (FIGS. 1 and 2)] FIG. 3 illustrates the case where the digital code images 600 and 620 are attached to the entire surface of the certification photograph 64. The digital code image 620 is attached to the background (A), the digital code image 600 is attached to the hair portion (B), and the image is not attached to the face portion. There is no need to attach an image to. Further, even if a part of the ID photo 64 is missing, the personal information can be surely decrypted,
An ECC code or the like may be added to the first personal information and the second personal information so that the digital code images 600 and 620 have redundancy. Also, the digital code image 60
0,620 is the first due to the change in the line width of the line screen.
The case of expressing the encrypted personal information and the second encrypted personal information of is illustrated, but, for example,

[Capture of Fingerprint, etc.] As a method of obtaining an image of a fingerprint or the like, in addition to the method of capturing the image from the digital camera 122 and the scanner 124, the display / input device 120 is equipped with an IC card reading device, etc.
A method of loading these pieces of information stored in the card into the image processing apparatus 1 from the IC card reading apparatus, and pre-registering these pieces of information in a dedicated database so that the ID photo-taking apparatus can access the database. You may take the method of obtaining the data in. Further, the display / input device 120 may be provided with a voice recognition device to create a voiceprint, or the display / input device 120 may be provided with a pen input device to capture a signature.

[Determination of Area] As a method for the area identification unit 260 of the image addition program 2 (FIG. 6) to determine the area to which the digital code images 600 and 620 are added,
I showed you how to process image data and identify regions.
A method in which the area identification unit 260 determines the area according to the user's designation or a method in which the area is determined according to a predetermined area may be adopted. The area identification unit 312 of the decryption / display program 3 (FIG. 7) can also adopt the same method.

[Device for Executing Image Addition Program 2 / Decoding / Display Program 3] Further, the case where the image processing device 1 executes both the image addition program 2 and the decoding / display program 3 has been described. It goes without saying that 2 and the decoding / display program 3 may be executed by different computers.

[Digital Code Images 600 and 620] When the digital code images 600 and 620 respectively represent the first encrypted personal information and the second encrypted personal information by the change in the line width of the parallel line screen. However, for example, the digital code images 600 and 620
However, the geometrical shape of the pixel block may be changed to express the information, or the angle of the pixel block may be changed to express the information.

[0097]

As described above, according to the image processing system and method of the present invention, a photographic image,
The validity of the photographic image can be proved by printing together with the image showing the data.

[Brief description of drawings]

FIG. 1 is a diagram exemplifying a certificate photograph used in an image processing method according to the present invention, to which a digital code image showing personal information (encrypted personal information) at a visible resolution is added.

FIG. 2 is a diagram exemplifying a certificate photograph used in the image processing method according to the present invention, to which a digital code image showing personal information (encrypted personal information) at an invisible resolution is added.

FIG. 3 is a diagram exemplifying a certification photograph created using the digital code image shown in FIGS. 1 and 2 by the image processing method according to the present invention.

FIG. 4 is a diagram illustrating an identification card to which the identification photograph shown in FIG. 3 is attached.

FIG. 5 is a diagram showing a configuration of an image processing apparatus for realizing an image processing method according to the present invention.

FIG. 6 is executed in the image processing apparatus shown in FIG.
It is a figure which shows the structure of the image addition program which produces the identification photograph shown in FIG.

7 is executed in the image processing device shown in FIG.
FIG. 4 is a diagram showing a configuration of a decryption / display program for decrypting and displaying personal information from the ID photo shown in FIG. 3.

FIG. 8 is a diagram illustrating an image in which a display screen for displaying decrypted personal information is added to the ID photo shown in FIG.

[Explanation of symbols]

1. Image processing device 10 ... Image processing apparatus main body 100 ... CPU 102 ... memory 110 ... Recording device 112 ... Recording medium 120 ... Display / input device 122 ... Digital camera 124 ... Scanner 126 ... Printer 2 ... Image addition program 200 ... UI control unit 210 ... Camera control unit 212 ... Image compression unit 220 ... Internal data generation / holding unit 222 ... Encryption unit 224-1, 224-2 ... Encoding unit 260: Area identification section 262 ... Code addition unit 270 ... Print control unit 3 ... Decoding / display program 300 ... UI control unit 310: Scanner / camera control unit 312 ... Area identification unit 314 ... Image separation unit 320-1, 320-2 ... Decoding unit 322 ... Decryption key holding unit 324 ... Decoding unit 330 ... Display image generation unit 340 ... Recording control unit

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Fuse Mario             430 Sakai, Nakai-cho, Ashigarakami-gun, Kanagawa Prefecture             Kunakai Fuji Xerox Co., Ltd. (72) Inventor Hideaki Ashikaga             430 Sakai, Nakai-cho, Ashigarakami-gun, Kanagawa Prefecture             Kunakai Fuji Xerox Co., Ltd. (72) Inventor Shoji Yamaguchi             430 Sakai, Nakai-cho, Ashigarakami-gun, Kanagawa Prefecture             Kunakai Fuji Xerox Co., Ltd. F-term (reference) 5B057 AA11 BA02 CA01 CA08 CA12                       CB01 CB06 CB08 CB12 CB16                       CB19 CD05 CE08 CE09 CG07                       CH18 DA08 DA16 DA17                 5C076 AA14 AA21 AA22 BA06 CA10                 5J104 AA07 AA14 KA01 KA16

Claims (16)

[Claims] 1. A target image generating means for generating a first target image to which data is to be added, and first additional data to be added to the target image, the first additional data being encoded. And a second encoding means for generating a first code indicating a first resolution image, and second additional data that is the same as or different from the first additional data, and encodes the second additional data. The first
Second encoding means for generating a second code shown as an image of a second resolution different from the above resolution; and adding the generated first code to the first portion of the first target image. Then, by adding the generated second code to a second portion different from the first portion of the target image,
An image addition processing device having an image addition means for making a second target image; and a first code and a second code from the first part and the second part of the second target image, or any one of these. A code or a code separating means for separating one of these, and the first additional data and the second additional data or these from the separated first code and second code or any of these First to decrypt either
And an image processing system including a decoding processing device including the decoding unit. 2. The image processing system according to claim 1, wherein the first target image is an image that allows a specific person to be identified. 3. The image processing system according to claim 2, wherein the first additional data and the second additional data are data indicating attributes of the specific person. 4. The first additional data and the second additional data are the specific person's name, date of birth, address,
The image processing system according to claim 3, which includes data indicating a telephone number, an email address, a place of work, an educational background, a school, a personal identification number, a nationality, a place of birth, a place of residence, a medical history and a handwriting, or any combination thereof. 5. The image processing system according to claim 3, wherein the first additional data and the second additional data include data indicating a physical characteristic of the specific person. 6. The image of the first resolution displays the first code in a visible size, and the image of the second resolution is smaller than the visible size of the second code. The image processing system according to claim 1, which is displayed. 7. The image addition processing device stores the first additional data and the second additional data,
A first encoding means and an second encoding means of the image addition processing means are further provided, which further include an encryption means for encrypting using the encryption key to obtain the first encrypted additional data and the second encrypted additional data, respectively. Of the second encrypted data and the second encrypted additional data.
Of the encrypted additional data, and the first decryption means of the decryption processing device uses the separated first code and / or the second code or the encrypted first code. Decrypting the encrypted additional data and the second encrypted additional data, or any one of them, and the decryption processing device, the decrypted first encrypted additional data and the second encrypted additional data, or one of these The image processing system according to any one of claims 1 to 6, further comprising a second decryption unit that decrypts the image using a decryption key corresponding to the encryption key. 8. A target image generating means for generating a first target image to which data is to be added, and the first additional data to be added to the target image is encoded to obtain the first additional data. And a second encoding means for generating a first code indicating a first resolution image, and second additional data that is the same as or different from the first additional data, and encodes the second additional data. The first
Second encoding means for generating a second code shown as an image of a second resolution different from the above resolution; and adding the generated first code to the first portion of the first target image. Then, by adding the generated second code to a second portion different from the first portion of the target image,
An image addition processing apparatus having an image addition unit for setting a second target image. 9. A decoding processing device for decoding a second target image, wherein the image addition processing device generates a first target image to which data is added and adds the first target image to the target image. The first additional data to be encoded,
Of the additional data is generated as an image of a first resolution, second additional data that is the same as or different from the first additional data is encoded, and the second additional data is converted into the second additional data. A second code shown as an image having a second resolution different from the first resolution is generated, the generated first code is added to the first portion of the first target image, and the generated second code is generated. A second code is generated by adding a second part to a second part different from the first part of the target image to obtain the second target image, and a first part of the second target image and Code separating means for separating the first code and the second code or any of them from the second part or any of these, and the separated first code and second code or any of these Therefore, the first additional data and the previous First to decode the second one additional data or these
And a decoding processing device including the decoding means. 10. A first target image to which data is added is generated, the first additional data to be added to the target image is encoded, and the first additional data is converted to a first resolution. Of the first additional data is generated, the second additional data that is the same as or different from the first additional data is encoded, and the second additional data is converted into the first additional data.
A second code shown as an image having a second resolution different from that of the first target image is added to the first portion of the first target image to generate the second code. A code of 2 is added to a second portion different from the first portion of the target image,
A second target image, separating the first code and the second code or any of them from the first part and the second part of the second target image, or any of these; An image processing method for decoding the first additional data, the second additional data, or any one of the first code and the second code, or any one of them. 11. A first target image to which data is to be added is generated, the first additional data to be added to the target image is encoded, and the first additional data is converted to a first resolution. Of the first additional data is generated, the second additional data that is the same as or different from the first additional data is encoded, and the second additional data is converted into the first additional data.
A second code shown as an image having a second resolution different from that of the first target image is added to the first portion of the first target image to generate the second code. A code of 2 is added to a second portion different from the first portion of the target image,
An image addition processing method for a second target image. 12. A decoding processing method for decoding a second target image, wherein the second target image is a decoding processing device of an image processing system having an image addition processing device,
The image addition processing device is a first target of adding data.
Of the target image, and encodes the first additional data added to the target image to generate a first code indicating the first additional data as an image of a first resolution,
The second additional data, which is the same as or different from the first additional data, is encoded to convert the second additional data into the first additional data.
A second code shown as an image of a second resolution different from that of the first code, and the generated first code is converted to the first code.
To the first part of the target image of the
Is generated by adding the symbol of No. 2 to a second portion different from the first portion of the target image to obtain the second target image, and the first portion and the second portion of the second target image are generated. Of the first code and the second code or any of these, and the first code and the second code or any of these separated from the first code and the second code Of the additional data and the second additional data, or any one of them. 13. A step of generating a first target image to which data is to be added, the first additional data to be added to the target image being encoded so that the first additional data is converted into a first image. Generating a first code shown as an image having a resolution of 1., encoding second additional data that is the same as or different from the first additional data, and converting the second additional data into the first additional data.
Generating a second code shown as an image of a second resolution different from that of the first target image, adding the generated first code to the first portion of the first target image, and generating the second code. And adding a second code to a second part different from the first part of the target image,
A step of setting the second target image, and causing the first computer to execute the first code and the second code from the first part and the second part of the second target image, or from either of the first part and the second part. Or a step of separating any of the above, and a step of separating the first additional data and the second additional data or any of these from the separated first code and second code or any of these A program that causes a second computer to execute the step of decrypting. 14. A step of generating a first target image to which data is to be added, encoding the first additional data to be added to the target image, and converting the first additional data into the first Generating a first code shown as an image having a resolution of 1., encoding second additional data that is the same as or different from the first additional data, and converting the second additional data into the first additional data.
Generating a second code shown as an image of a second resolution different from that of the first target image, adding the generated first code to the first portion of the first target image, and generating the second code. And adding a second code to a second part different from the first part of the target image,
A program for causing a computer to execute the step of setting a second target image. 15. A program for decoding a second target image, wherein the second target image is a decoding processing device of an image processing system having an image addition processing device, wherein the image addition processing device is , Generating a first target image to which data is to be added, encoding the first additional data to be added to the target image, and showing the first additional data as an image of a first resolution A first code is generated, second additional data that is the same as or different from the first additional data is encoded, and the second additional data is converted into an image having a second resolution different from the first resolution. Generating a second code, adding the generated first code to the first portion of the first target image, and adding the generated second code to the first image of the target image. In addition to the second part different from Second target image, and the first code and / or the second code or either of them is separated from the first part and / or the second part of the second target image. And a step of decoding the first additional data and the second additional data or any one of them from the separated first code and second code or any one of them. Program to let. 16. A person image for identifying a person, a first additional image showing first additional data at a first resolution, and second additional data that is the same as or different from the first additional data, An identification card with a person identifying image including a second additional image shown in a second resolution different from the first resolution, wherein the first additional image is a first portion of the person image. And the second additional image is added to a second portion different from the first portion of the person image.