发明名称 |
Motion Estimation for a Video Transcoder |
摘要 |
A video transcoder for converting an encoded input video bit-stream having one spatial resolution into an encoded output video bit-stream having a lower spatial resolution, wherein motion-vector dispersion observed at the higher spatial resolution is quantified and used to configure the motion-vector search at the lower spatial resolution. For example, for video-frame areas characterized by relatively low motion-vector dispersion values, the motion-vector search may be performed over a relatively small vector space and with the use of fewer search patterns and/or hierarchical search levels. These constraints enable the transcoder to find appropriate motion vectors for inter-prediction coding without having to perform an exhaustive motion-vector search for these video-frame areas, which advantageously reduces the computational complexity and processor load compared to those of a comparably performing prior-art video transcoder.
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申请公布号 |
US2012106642(A1) |
申请公布日期 |
2012.05.03 |
申请号 |
US201113165056 |
申请日期 |
2011.06.21 |
申请人 |
LETUNOVSKIY ALEKSEY ALEXANDROVICH;MARKOVIC ALEXANDER;MAZURENKO IVAN LEONIDOVICH;PARFENOV DENIS VASSILEVICH;PETYUSHKO ALEXANDER ALEXANDROVICH;LSI CORPORATION |
发明人 |
LETUNOVSKIY ALEKSEY ALEXANDROVICH;MARKOVIC ALEXANDER;MAZURENKO IVAN LEONIDOVICH;PARFENOV DENIS VASSILEVICH;PETYUSHKO ALEXANDER ALEXANDROVICH |
分类号 |
H04N7/26 |
主分类号 |
H04N7/26 |
代理机构 |
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