Drifting reduction and macroblock-based control in progressive fine granularity scalable video coding
US6907070B2 · kind B2 · utility
32Cited by
6References
53Claims
0Family size
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Key dates
| Filing date | Nov 8, 2001 |
| Grant date | Jun 14, 2005 |
| Priority date | — |
| Expiry date | May 17, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/51
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A motion-compensated video encoding scheme employs progressive fine-granularity layered coding to encode macroblocks of video data into frames having multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video. Some of the enhancement layers in a current frame are predicted from different quality layers in reference frames. The video encoding scheme estimates drifting errors during the encoding and chooses a coding mode for each macroblock in the enhancement layer to maximize high coding efficiency while minimizing drifting errors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.