Steganographic image encoding
US7313248B2 · kind B2 · utility
19Cited by
8References
45Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 1, 2003 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Jul 31, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2201/0083
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A steganographic image encoding method (100) is disclosed. The method (100) defines a candidate set of incoherent pixel groups in a digital image, each pixel group comprising at least two pixels. A subset of the candidate set of pixel groups is selected using a predefined selection criterion and an integer colour value is assigned to each of a plurality of colours. The information is embedded in the image by modifying colour values of pixels of the selected subset of pixel groups such that the information is embedded in accordance with the order of the integer colour values corresponding to the colour values after modification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.