发明名称 |
CODING METHOD, DECODING METHOD, AND EQUIPMENTS FOR TRANSFORM COEFFICIENTS |
摘要 |
A method and an apparatus for encoding and decoding transform coefficients are disclosed. The encoding method includes: encoding transform coefficients of a transform coefficient block according to a predetermined scan order, and encoding a set number of transform coefficients in each group until a last group of the transform coefficient block is encoded; storing an obtained map of non-zero transform coefficients, absolute values of transform coefficients, and positive and negative signs of non-zero transform coefficients; when the last group is being encoded, after obtaining a map of non-zero transform coefficients encoded in the last group, encoding the stored map of non-zero transform coefficients and the map of non-zero transform coefficients encoded in the last group into a bit stream; and after obtaining absolute values of transform coefficients and positive and negative signs of non-zero transform coefficients encoded in the last group, encoding the stored absolute values of transform coefficients and positive and negative signs of non-zero transform coefficients and the absolute values of transform coefficients and positive and negative signs of non-zero transform coefficients encoded in the last group into the bit stream. Encoding and decoding efficiency can be increased. |
申请公布号 |
EP2677750(A4) |
申请公布日期 |
2014.08.27 |
申请号 |
EP20110860213 |
申请日期 |
2011.11.22 |
申请人 |
HUAWEI TECHNOLOGIES CO., LTD. |
发明人 |
SONG, JIN;YANG, MINGYUAN;WANG, DONG |
分类号 |
H04N19/117;H04N19/129;H04N19/132;H04N19/60;H04N19/61;H04N19/645;H04N19/86;H04N19/91 |
主分类号 |
H04N19/117 |
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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