发明名称 |
METHOD AND APPARATUS OF ADAPTIVE LOOP FILTERING |
摘要 |
A method and apparatus for processing in-loop reconstructed video using an in-loop filter is disclosed. In the recent HEVC development, adaptive loop filtering (ALF) is being adopted to process in-loop reconstruction video data, where ALF can be selectively turned ON or OFF for each block in a frame or a slice. An advanced ALF is disclosed later that allows a choice of multiple filter sets that can be applied to the reconstructed video data adaptively. In the present disclosure, pixels of the in-loop reconstructed video data are divided into a plurality of to-be-filtered regions, and an in-loop filter from a filter set is determined for each to-be-filtered region based on a rate-distortion optimization procedure. According to one embodiment of the present invention, computation of cost function associated with the rate-distortion optimization procedure is related to correlation values associated with original video data and the in-loop reconstructed video data. Furthermore, the correlation values can be shared by the multiple candidate filters during the rate-distortion optimization procedure for said each to-be-filtered region. In another embodiment, the correlation values can be shared by multiple candidate to-be-filtered regions of an area of the in-loop reconstructed video data during the rate-distortion optimization procedure for the area of the in-loop reconstructed video data. |
申请公布号 |
EP2625860(A4) |
申请公布日期 |
2015.06.03 |
申请号 |
EP20110830226 |
申请日期 |
2011.09.30 |
申请人 |
MEDIATEK INC. |
发明人 |
TSAI, CHIA-YANG;FU, CHIH-MING;CHEN, CHING-YEH;HUANG, YU-WEN;LEI, SHAW-MIN |
分类号 |
H04N19/119;H04N19/117;H04N19/147;H04N19/17;H04N19/176;H04N19/182;H04N19/82 |
主分类号 |
H04N19/119 |
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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