发明名称 |
METHOD AND APPARATUS FOR VIDEO INTERMODAL TRANSCODING |
摘要 |
A video intermodal transcoder converts a compressed bitstream formulated according a type-1 compression scheme to a type-2 compressed bitstream formulated according to a type-2 compression scheme. The transcoder includes an augmented type-1 decoder, a transcoder kernel, and an augmented type-2 encoder. The transcoder kernel performs processes of creating motion- vector candidates and pre-computing prediction errors for each cell of a predefined image coding block and for each candidate motion vector for repetitive use in evaluating various image partitions. In an implementation where the type-1 compression scheme follows the H.264 standard and the type-2 compression scheme follows the HEVC standard, the transcoder exploits the flexibility of the coding-tree structure and other HEVC features to significantly reduce the bit rate of the compressed bit stream. The pre-computation of prediction errors significantly reduces the processing effort, hence increases the throughput of the transcoder. |
申请公布号 |
WO2016119048(A1) |
申请公布日期 |
2016.08.04 |
申请号 |
WO2016CA00027 |
申请日期 |
2016.01.29 |
申请人 |
ÉCOLE DE TECHNOLOGIE SUPÉRIEURE |
发明人 |
FRANCHE, JEAN-FRANCOIS;COULOMBE, STÉPHANE |
分类号 |
H04N19/40;H04N19/122;H04N19/139;H04N19/17;H04N19/65 |
主分类号 |
H04N19/40 |
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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