Coding apparatus and method, decoding apparatus and method, data processing system, storage medium, and signal

• US 7,738,711 B2
• Filed: 05/20/2005
• Issued: 06/15/2010
• Est. Priority Date: 07/15/1998
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Tanaka, Kenji, Kondo, Tetsujiro, Watanabe, Yoshinori
• Primary Examiner(s): Do; Anh Hong
• Application Number:
  US11/134,737
• Publication Number:
  US 20050265443A1
• Time in Patent Office: 1,852 Days
• Field of Search: 382/232, 382/100, 382/233, 382/248, 380/201, 380/54, 380/278, 380/201.54, 709/219, 709/224, 709/217, 713/176, 713/153, 713/179, 713/193, 375/E7.255, 375/E7.265, 375/254, 375/285, 726/23, 726/22, 348/436.1, 348/400.1, 704/200.1, 704/268, 704/269
• US Class Current: 382/232
• CPC Class Codes: G06T 1/0028 Adaptive watermarking, e.g. Human Visual System [HVS]-based watermarking
• CPC Class Codes: G06T 1/0035 Output size adaptive watermarking
• CPC Class Codes: G06T 2201/0051 Embedding of the watermark in the spatial domain
• CPC Class Codes: G06T 2201/0053 Embedding of the watermark in the coding stream, possibly without decoding; Embedding of the watermark in the compressed domain
• CPC Class Codes: G06T 2201/0061 Embedding of the watermark in each block of the image, e.g. segmented watermarking
• CPC Class Codes: G06T 2201/0083 whereby only watermarked image required at decoder, e.g. source-based, blind, oblivious
• CPC Class Codes: H04N 1/32203 Spatial or amplitude domain methods H04N1/32309 takes precedence
• CPC Class Codes: H04N 1/32219 involving changing the position of selected pixels, e.g. word shifting, or involving modulating the size of image components, e.g. of characters H04N1/32224 takes precedence
• CPC Class Codes: H04N 1/32251 in multilevel data, e.g. greyscale or continuous tone data
• CPC Class Codes: H04N 1/32347 Reversible embedding, i.e. lossless, invertible, erasable, removable or distorsion-free embedding
• CPC Class Codes: H04N 19/467 characterised by the embedded information being invisible, e.g. watermarking
• CPC Class Codes: H04N 19/503 involving temporal prediction adaptive coding with adaptive selection between spatial and temporal predictive coding H04N19/107; adaptive coding with adaptive selection among a plurality of temporal predictive coding modes H04N19/109
• CPC Class Codes: H04N 19/593 involving spatial prediction techniques
• CPC Class Codes: H04N 19/99 involving fractal coding
• CPC Class Codes: H04N 7/08 Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band , e.g. by time division H04N7/007 takes precedence

Abstract

A coding apparatus for embedding second data into first data without deteriorating the first data includes a memory for storing at least partial data of the first data. An embedding coder embeds the second data into the first data by rearranging, according to the second data, at least partial data of the first data stored in the memory. A decoding apparatus for decoding coded data in to the original first data and the original second data without deteriorating the quality of the data includes a relation calculating unit for calculating a relation between first partial data and second partial data of the coded data. A decoder decodes the coded data into the original first data by moving the first partial data and the second partial data of the coded data based on the relation calculated by the relation calculating unit, and decodes the second data that is embedded in the coded data according to the movement.

Claims

1. A coding apparatus, comprising:

a receiving unit configured to receive first information and second information; and

a coding unit configured to embed the second information into the first information and producing coded data so that decoding the coded data is performed by utilizing an energy distribution possessed by the first information,

wherein the decoding is performed by utilizing a correlation of the first information.

2. The coding apparatus according to claim 1, wherein the first and second information are information of identical or different media.

3. The coding device according to claim 1, wherein the first information is an image or audio.

4. The decoding apparatus configured to decode data obtained by coding first information according to second information, comprising:

a receiving unit configured to receive the coded data, the coded data including the second information embedded into the first information; and

a decoding unit configured to decode the coded data into the first information and the second information by utilizing an energy distribution possessed by the first information,

wherein the decoding is performed by utilizing a correlation of the first information.

5. The decoding apparatus according to claim 4, wherein the first information and second information are information of identical or different media.

6. The decoding apparatus according to claim 4, wherein the first information is an image or audio.

7. A medium to provide coded data obtained by embedding second information into first information and producing coded data so that decoding the coded data is performed by utilizing an energy distribution of the first information,

wherein the decoding is performed by utilizing a correlation of the first information.

8. The medium according to claim 7, wherein the first information and the second information are information of identical or different media.

9. The medium according to claim 7, wherein the first information is an image or audio.