# US 7,613,318 B2 · Image processing apparatus, image processing method, and print product

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- Number: US 7,613,318 B2
- Document ID: US7613318B2
- Status: Granted
- Kind: B2
- Application number: 11/337,002
- Filed: 2006-01-23
- Published: 2006-07-27
- Granted: 2009-11-03
- Earliest claimed: 2005-01-24
- Assignees: Kabushiki Kaisha Toshiba
- Inventors: Takashi Yamaguchi; Shinya Tokuda
- Web page: https://patentgrep.com/patent/US7613318B2

## CPC

- H04N 1/32203: {Spatial or amplitude domain methods (H04N1/32309 takes precedence)}
- H04N 1/32229: {with selective or adaptive application of the additional information, e.g. in selected regions of the image (H04N1/32213 takes precedence)}
- H04N 1/32336: {Informed embedding, i.e. the original image being known for the encoding or decoding method}
- B42D 25/333: Watermarks
- H04N 2201/327: which are undetectable to the naked eye, e.g. embedded codes
- H04N 2201/3271: Printing or stamping
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- B42D: BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS

## Abstract

An image processing apparatus determines an embedding method for embedding sub information into a main image to be printed on a recording layer based on the degree of optical shielding of a protection layer or a security layer formed on the surface of the recording layer, on which an image is to be printed, with respect to the surface of the recording layer in a recording medium, and generates a composite image obtained by embedding the sub information into the main image by the determined embedding method as the image to be printed on the recording layer of the recording medium.

## Claims

### Claim 1

An image processing apparatus for generating an image to be printed on a recording medium, comprising:
a determination unit configured to determine an embedding position of respective pieces of a plurality of sub information into a main image to be printed on a print surface;
an image processing unit configured to generate a composite image obtained by embedding respective pieces of the sub information into the main image by the embedding position determined by the determination unit;
a first memory configured to store first information indicating a degree of optical shielding of each of a plurality of regions of a protection layer formed on the print surface of the recording medium;
a second memory configured to store second information indicating a priority level of the embedding position of the sub information corresponding to the degree of optical shielding; and
a third memory configured to store third information indicating importance levels of the respective pieces of the sub information,
wherein the determination unit determines the embedding position of the respective pieces of the sub information based on:
the first information indicating the degree of optical shielding of each of the plurality of regions of the protection layer,
the second information indicating the priority level of the embedding position of the sub information corresponding to the degree of optical shielding, and
the third information indicating importance levels of the respective pieces of the sub information such that the pieces of the sub information with higher importance levels are assigned to regions with lower degrees of optical shielding and the pieces of the sub information with lower importance levels are assigned to regions with higher degrees of optical shielding.

### Claim 2 (depends on 1)

An apparatus according to claim 1, which further comprises:
a print unit which prints the composite image generated by the image processing unit on the print surface of the recording medium.

### Claim 3 (depends on 2)

An apparatus according to claim 2, which further comprises:
a layer forming unit which forms a layer, which exhibits the degree of optical shielding, on the print surface on which the composite image is printed by the print unit.

### Claim 4

An image processing method for generating an image to be printed on a recording medium, comprising:
determining an embedding position of respective pieces of a plurality of sub information into a main image to be printed on a print surface;
generating a composite image obtained by embedding the respective pieces of the sub information into the main image by the determined embedding position;
storing, in a first memory, first information indicating a degree of optical shielding of each of a plurality of regions of a protection layer formed on the print surface of the recording medium;
storing, in a second memory, second information indicating a priority level of the embedding position of the sub information corresponding to the degree of optical shielding; and
storing, in a third memory, third information indicating importance levels of the respective pieces of the sub information,
wherein the determination unit determines the embedding position of the respective pieces of the sub information based on:
the first information indicating the degree of optical shielding of each of the
plurality of regions of the protection layer,
the second information indicating the priority level of the embedding
position of the sub information corresponding to the degree of optical shielding, and
the third information indicating importance levels of the respective pieces of the sub information such that the pieces of the sub information with higher importance levels are assigned to regions with lower degrees of optical shielding and the pieces of the sub information with lower importance levels are assigned to regions with higher degrees of optical shielding.

### Claim 5 (depends on 4)

The image processing method of claim 4, further comprising forming a layer, which exhibits the degree of optical shielding, on the print surface on which the composite image is printed.

### Claim 6 (depends on 4)

A print product prepared by using the image processing method of claim 4.