发明名称 |
Adaptive filtering based upon boundary strength |
摘要 |
Adjacent regions are identified in an image. Coding parameters for the adjacent regions are identified. Selective filtering is performed at the region between the identified adjacent regions. |
申请公布号 |
US9407913(B2) |
申请公布日期 |
2016.08.02 |
申请号 |
US201615001700 |
申请日期 |
2016.01.20 |
申请人 |
Dolby Laboratories Licensing Corporation |
发明人 |
Sun Shijun;Lei Shawmin;Katata Hiroyuki |
分类号 |
H04N7/12;H04N19/117;H04N19/196;H04N19/139;H04N19/159;H04N19/176;H04N19/46;H04N19/61;H04N19/60;H04N19/136;H04N19/14;H04N19/137;H04N19/82;H04N19/43;H04N19/527;H04N19/85;H04N19/86;H04N19/573;H04N19/58;H04N19/51;H04N19/615;H04N19/167 |
主分类号 |
H04N7/12 |
代理机构 |
Fish & Richardson P.C. |
代理人 |
Fish & Richardson P.C. |
主权项 |
1. An image decoding method comprising:
motion compensation predicting a block to be decoded by using a previously reconstructed image as a reference image;
inverse quantizing a block of transformed and quantized coefficients;inverse transforming the block of inverse quantized coefficients;reconstructing an image using the motion compensation predicted block and the inverse transformed block; anddeblock filtering the reconstructed image;wherein the deblock filtering comprises determining whether or not to conduct filtering a boundary between two adjacent blocks in the reconstructed image, where:(1) filtering is conducted when at least one of the two adjacent blocks is intra-coded, and(2) filtering is not conducted when both of the two adjacent blocks are not intra-coded, a non-zero transformation coefficient is not coded in both of the two adjacent blocks, the two adjacent blocks are predicted by a same reference frame, and an absolute value of a difference between motion vectors of the two adjacent blocks is smaller than a specified threshold value. |
地址 |
San Francisco CA US |