发明名称 |
Method and device for motion vector prediction in video transcoding using full resolution residuals |
摘要 |
A transcoder and methods of encoding inter-prediction frames of a downsampled video wherein the downsampled video is a spatially downsampled version of a full-resolution video. Full-resolution motion vectors are downscaled and a weighting factor is calculated for each downscaled motion vector based upon the transform domain residual coefficients associated with that full-resolution motion vector. A motion vector prediction is made based on the weighted average using the downscaled motion vectors and their weighting factors.
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申请公布号 |
US8315310(B2) |
申请公布日期 |
2012.11.20 |
申请号 |
US20100684219 |
申请日期 |
2010.01.08 |
申请人 |
SHI XUN;YU XIANG;HE DAKE;RESEARCH IN MOTION LIMITED |
发明人 |
SHI XUN;YU XIANG;HE DAKE |
分类号 |
H04B1/66;H04N5/14 |
主分类号 |
H04B1/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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