Methods and devices for processing data and notably for compressing and decompressing images
US6498866B2 · kind B2 · utility
16Cited by
3References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1998 |
| Grant date | Dec 24, 2002 |
| Priority date | — |
| Expiry date | Aug 24, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/98
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to the invention, the method of primary processing of a first set of primary data (IM,f) representing physical quantities includes:a set division step (200A to 202) during which the first set of data is divided into sub-sets of first data, andfor each first sub-set of data:a step (205 to 207) of “constructing” a global contractive mapping of the first type, for the said first sub-set of data, whose fixed point constitutes an approximation of all or part of this sub-set. The set of parameters (ai, b) thus determined constitutes a primary representation of the said first set of data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.