发明名称 |
INTRA-MODE PREDICTION 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 learned statistics of intra-mode transcoding are used to constrain the search of intra modes for the output video bit-stream. The statistics of intra-mode transcoding can be gathered, e.g., by applying brute-force downsizing to a training set of video frames and then analyzing the observed intra-mode transcoding patterns to determine a transition-probability matrix for use during normal operation of the transcoder. The transition-probability matrix enables the transcoder to select appropriate intra modes for the output video bit-stream without performing a corresponding exhaustive full search, 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 |
US2012082220(A1) |
申请公布日期 |
2012.04.05 |
申请号 |
US201113163853 |
申请日期 |
2011.06.20 |
申请人 |
MAZURENKO IVAN LEONIDOVICH;LETUNOVSKIY ALEKSEY ALEXANDROVICH;MARKOVIC ALEXANDER;PARFENOV DENIS VASSILEVICH;PETYUSHKO ALEXANDER ALEXANDROVICH;LSI CORPORATION |
发明人 |
MAZURENKO IVAN LEONIDOVICH;LETUNOVSKIY ALEKSEY ALEXANDROVICH;MARKOVIC ALEXANDER;PARFENOV DENIS VASSILEVICH;PETYUSHKO ALEXANDER ALEXANDROVICH |
分类号 |
H04N7/32 |
主分类号 |
H04N7/32 |
代理机构 |
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