US 12,250,401 B2
Harmonized design for offset based refinement and multiple reference line selection
Liang Zhao, Sunnyvale, CA (US); Xin Zhao, San Jose, CA (US); and Shan Liu, San Jose, CA (US)
Assigned to TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed by Tencent America LLC, Palo Alto, CA (US)
Filed on Jan. 12, 2022, as Appl. No. 17/573,823.
Claims priority of provisional application 63/217,061, filed on Jun. 30, 2021.
Prior Publication US 2023/0007299 A1, Jan. 5, 2023
Int. Cl. H04N 19/593 (2014.01); H04N 19/11 (2014.01); H04N 19/13 (2014.01); H04N 19/136 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/593 (2014.11) [H04N 19/11 (2014.11); H04N 19/13 (2014.11); H04N 19/136 (2014.11); H04N 19/176 (2014.11)] 19 Claims
OG exemplary drawing
 
1. A method of video decoding, the method comprising:
receiving, by a device comprising a memory storing instructions and a processor in communication with the memory, a coded video bitstream for a block;
determining, by the device and based on a reference line index of the block, whether an offset-based intra prediction refinement (ORIP) mode is enabled for the block, wherein determining whether the ORIP mode is enabled based on the reference line index of the block comprises:
when the reference line index is less than a predefined value, determining that the ORIP mode is enabled for the block; and
when the reference line index is greater than the predefined value, determining that the ORIP mode is disabled for the block;
when the ORIP mode is enabled for the block, performing, by the device, an offset refinement to generate an intra predictor for intra prediction of the block.