US 12,407,820 B2
Intra prediction with multiple reference lines
Xin Zhao, San Jose, CA (US); Xiang Li, Saratoga, CA (US); Shan Liu, San Jose, CA (US); and Liang Zhao, Sunnyvale, CA (US)
Assigned to Tencent America LLC, Palo Alto, CA (US)
Filed by Tencent America LLC, Palo Alto, CA (US)
Filed on Feb. 12, 2024, as Appl. No. 18/439,367.
Application 18/439,367 is a continuation of application No. 17/741,383, filed on May 10, 2022, granted, now 11,943,435.
Application 17/741,383 is a continuation of application No. 17/164,187, filed on Feb. 1, 2021, granted, now 11,363,261, issued on Jun. 14, 2022.
Application 17/164,187 is a continuation of application No. 16/534,750, filed on Aug. 7, 2019, granted, now 10,939,101, issued on Mar. 2, 2021.
Application 16/534,750 is a continuation of application No. 16/200,533, filed on Nov. 26, 2018, granted, now 10,419,754, issued on Sep. 17, 2019.
Claims priority of provisional application 62/651,547, filed on Apr. 2, 2018.
Prior Publication US 2024/0187577 A1, Jun. 6, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/11 (2014.01); H04N 19/176 (2014.01); H04N 19/184 (2014.01)
CPC H04N 19/11 (2014.11) [H04N 19/176 (2014.11); H04N 19/184 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method for video decoding, comprising:
decoding prediction information of a current block from a coded video bitstream, the prediction information being indicative of a reference line selected from multiple potential reference lines and an intra prediction mode selected from a set of potential intra prediction modes that is associated with the reference line; and
reconstructing at least one sample of the current block based on the intra prediction mode and at least one reference sample in the reference line, wherein
when the reference line is a non-zero reference line, a first set of potential intra prediction modes associated with the non-zero reference line includes a smaller number of potential intra prediction modes compared to a second set of potential intra prediction modes associated with a zero reference line, and
the first set of potential intra prediction modes only includes most probable modes.