CPC H04N 19/66 (2014.11) [H04N 19/176 (2014.11); H04N 19/593 (2014.11); H04N 19/80 (2014.11)] | 23 Claims |
10. A method for deblocking a sub-partitions boundary within a coding block during an image encoding or image decoding process, wherein the coding block is coded in an intra prediction mode and the coding block is partitioned into sub-partitions by an intra sub-partition (ISP) tool and the sub-partitions including a first sub-partition and a second sub-partition, and the first sub-partition is horizontally adjacent to a second sub-partition, the method comprising:
determining a first maximum filter length to be 1 for the first sub-partition, when a width of the first sub-partition is 4 samples or a width of the second sub-partition is 4 samples; and
modifying, based on the first maximum filter length, a value of up to one sample of the first sub-partition, wherein the up to one sample is obtained from a row of the first sub-partition that is perpendicular to the sub-partitions boundary between the first sub-partition and the second sub-partition and the up to one sample is adjacent to the sub-partitions boundary between the first sub-partition and the second sub-partition,
wherein the sub-partitions boundary between the first sub-partition and the second sub-partition is caused by the intra sub-partition tool, and the sub-partitions boundary between the first sub-partition and the second sub-partition is an internal boundary.
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