Methods and transcoders that estimate an output macroblock and motion vector for video transcoding
US7903731B2 · kind B2 · utility
3Cited by
1References
2Claims
0Family size
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Key dates
| Filing date | Sep 29, 2005 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Jan 6, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/56
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and transcoders are disclosed for video transcoding input macroblocks to an output macroblock. One of the methods estimates an output macroblock mode for the video transcoding. A spatial weight is determined based on size of overlapping areas of each of the input macroblocks with a correlation area that is correlated with the output macroblock. A discrete cosine transform (DCT) weight is determined based on a number of zero DCT coefficients of each of the input macroblocks that overlap the correlation area. The output macroblock mode is estimated based on the spatial weight and the DCT weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.