Hierarchical coding and decoding method
US7848429B2 · kind B2 · utility
1Cited by
5References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 12, 2006 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Oct 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/635
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The method comprising a wavelet-based spatial analysis step comprising filtering operations of the picture at the high resolution format and horizontal and/or vertical decimation operations of the filtered picture to supply subband signals, is wherein a decimation operation is carried out according to a factor different from an even value and corresponds to the quotient of the horizontal and vertical dimensions of the first and second format such that the low frequency picture thus obtained relative to the low frequency subband signals, corresponds to the second format.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.