Method of encoding and decoding an image sequence by means of hierarchical temporal analysis
US8175153B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Feb 21, 2005 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Oct 3, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The method realizes a motion compensated temporal filtering (MCTF), the temporal filtering being replaced by an intra mode coding to obtain at least one low (L) or high (H) frequency picture if the current picture has a level of correlation with a lower previous picture at a threshold, the low frequency pictures obtained (L) being thus scaled to be adapted, at the energy level, to the pictures obtained by motion compensated temporal filtering, and comprises, at the end of analysis: The applications relate to video compression with temporal prediction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.