发明名称 |
MULTI-LEVEL SIGNIFICANCE MAP SCANNING |
摘要 |
Methods of encoding and decoding for video data are described in which multi- level significance maps are used in the encoding and decoding processes. The significant-coefficient flags that form the significance map are grouped into contiguous groups, and a significant-coefficient-group flag signifies for each group whether that group contains no non-zero significant-coefficient flags. A multi-level scan order may be used in which significant-coefficient flags are scanned group-by-group. The group scan order specifies the order in which the groups are processed, and the scan order specifies the order in which individual significant-coefficient flags within the group are processed. The bitstream may interleave the significant-coefficient-group flags and their corresponding significant-coefficient flags, if any. |
申请公布号 |
CA2773990(C) |
申请公布日期 |
2015.06.30 |
申请号 |
CA20122773990 |
申请日期 |
2012.04.13 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
HE, DAKE;NGUYEN, NGUYEN;JI, TIANYING |
分类号 |
H04N19/64;H04N19/176;H04N19/18;H04N19/184;H04N19/61 |
主分类号 |
H04N19/64 |
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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