Motion compensated temporal filtering based on multiple reference frames for wavelet based coding
US7023923B2 · kind B2 · utility
7Cited by
4References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2002 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Jun 9, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is directed to a method and device for encoding a group of video frames. According to the present invention, regions in at least one frame in the group are matched to regions in multiple reference frames. The difference between pixel values of the regions in the at least one frame and the regions in the multiple reference frames is calculated. The difference is transformed into wavelet coefficients. The present invention is also directed to a method and device for decoding a group of frames by performing the inverse of the above described encoding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.