发明名称 |
BLOCK-BASED PARALLEL DEBLOCKING FILTER IN VIDEO CODING |
摘要 |
Deblocking filtering is provided in which an 8x8 filtering block covering eight sample vertical and horizontal boundary segments is divided into filtering sub-blocks that can be independently processed. To process the vertical boundary segment, the filtering block is divided into top and bottom 8x4 filtering sub-blocks, each covering a respective top and bottom half of the vertical boundary segment. To process the horizontal boundary segment, the filtering block is divided into left and right 4x8 filtering sub-blocks, each covering a respective left and right half of the horizontal boundary segment. The computation of the deviation d for a boundary segment in a filtering sub-block is performed using only samples from rows or columns in the filtering sub-block. Consequently, the filter on/off decisions and the weak/strong filtering decisions of the deblocking filtering are performed using samples contained within individual filtering blocks, thus allowing full parallel processing of the filtering blocks. |
申请公布号 |
US2016119650(A1) |
申请公布日期 |
2016.04.28 |
申请号 |
US201614987570 |
申请日期 |
2016.01.04 |
申请人 |
Texas Instruments Incorporated |
发明人 |
Sadafale Mangesh Devidas;Zhou Minhua |
分类号 |
H04N19/86;H04N19/436;H04N19/176;H04N19/117;H04N19/157 |
主分类号 |
H04N19/86 |
代理机构 |
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代理人 |
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主权项 |
1. A method for deblocking filtering a reconstructed picture in a video encoder or a video decoder, the method comprising:
computing a first measure of deviation at a first four sample boundary segment covered by a first filtering sub-block of an 8×8 filtering block, wherein the first measure of deviation is computed using only samples of the reconstructed picture in the first filtering sub-block; using the first measure of deviation in deblocking filter decisions for the first boundary segment; computing a second measure of deviation at a second boundary segment covered by a second filtering sub-block of the 8×8 filtering block, wherein the second measure of deviation is computed using only samples of the reconstructed picture in the second filtering sub-block; and using the second measure of deviation in deblocking filter decisions for the second boundary segment, wherein the first filtering sub-block is a top 8×4 filtering sub-block, the second filtering sub-block is a bottom 8×4 filtering sub-block, and the first and second four sample boundary segments are vertical boundary segments, or the first filtering sub-block is a left 4×8 filtering sub-block, the second filtering sub-block is a right 4×8 filtering sub-block, and the first and second four sample boundary segments are horizontal boundary segments. |
地址 |
Dallas TX US |