Method for encoding and decoding images, encoding and decoding device, and corresponding computer programs
US9374599B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2012 |
| Grant date | Jun 21, 2016 |
| Priority date | — |
| Expiry date | Dec 16, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/593
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for encoding an image having been cut up into partitions. The method includes: predicting data of a current partition based on an already encoded and then decoded reference partition, generating a predicted partition; determining residual data by comparing data relating to the current partition with the predicted partition, the residual data associated with various digital data items. Prior producing a signal containing the encoded information, performing the following steps: determining, from the predetermined residual data, a subset containing residual data capable of being modified; calculating the value of a function representative of the residual data; comparing the calculated value with a value of at least one of the digital data items; based on the comparison, modification or non-modification of at least one of the residual data items of the subset; and, in the event of a modification, entropy encoding the at least one modified residual data item.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.