发明名称 |
A METHOD FOR PRE-DELETING NOISE OF IMAGE |
摘要 |
<p>A method for pre-suppress noise of an image at least includes the following steps: detecting whether the currently processed DCT coefficient value is equal to or less than a corresponding threshold used for this time during quantizing DCT (Discrete Cosine Transform) coefficients of a CIF (Common Intermediate Format) image blocks in sequence, if it is, setting the DCT coefficient to zero, then increasing the threshold of this time to be used as a threshold of next time for the DCT coefficient processing, otherwise recovering the threshold used for this time to a predetermined initial threshold, which will be used as the next time threshold for the next processing of DCT coefficient; detecting whether the increased threshold is greater than a predetermined upper limit of a threshold, if it is, substituting the increased threshold with the predetermined upper limit. <IMAGE></p> |
申请公布号 |
EP1365590(A1) |
申请公布日期 |
2003.11.26 |
申请号 |
EP20020703466 |
申请日期 |
2002.02.25 |
申请人 |
HUAWEI TECHNOLOGIES CO., LTD. |
发明人 |
XIONG, LIANHUAN;WANG, JING;CHEN, ZHEN;WANG, HONGYUAN |
分类号 |
H04N1/00;H04N19/124;H04N19/132;H04N19/136;H04N19/164;H04N19/18;H04N19/196;H04N19/80;H04N19/85;(IPC1-7):H04N7/50;G06T9/00;H04N7/30 |
主分类号 |
H04N1/00 |
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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