US 12,355,986 B2
Intra mode coding
Liang Zhao, Palo Alto, CA (US); Xin Zhao, San Diego, CA (US); Xiang Li, Los Gatos, 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 Oct. 5, 2023, as Appl. No. 18/376,980.
Application 18/376,980 is a continuation of application No. 17/550,486, filed on Dec. 14, 2021, granted, now 11,818,366.
Application 17/550,486 is a continuation of application No. 17/036,342, filed on Sep. 29, 2020, granted, now 11,240,514, issued on Feb. 1, 2022.
Application 17/036,342 is a continuation of application No. 16/549,524, filed on Aug. 23, 2019, granted, now 10,819,986, issued on Oct. 27, 2020.
Application 16/549,524 is a continuation of application No. 16/198,951, filed on Nov. 23, 2018, granted, now 10,469,845, issued on Nov. 5, 2019.
Claims priority of provisional application 62/734,996, filed on Sep. 21, 2018.
Prior Publication US 2024/0048728 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/167 (2014.01); H04N 19/11 (2014.01)
CPC H04N 19/167 (2014.11) [H04N 19/11 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of controlling intra prediction for decoding a video sequence, the method being performed by at least one processor, and the method comprising:
determining a ratio of a width to a height of a coding unit;
based on the ratio being different than one, determining that a table comprises a plurality of intra prediction modes corresponding to intra prediction angles, first wide angles toward a left portion of bottom edge of the coding unit, second wide angles toward a top portion of right edge of the coding unit, and additional intra prediction modes respectively corresponding to the first wide angles and the second wide angles, wherein each of the intra prediction angles included in the table has an angular direction α with tan(α) equal to {0/32, 1/32, 2/32, 3/32, 4/32, 6/32, 8/32, 10/32, 12/32, 14/32, 16/32, 18/32, 20/32, 23/32, 26/32, 29/32, 32/32}; and
determining, for decoding the video sequence, one of the plurality of intra prediction modes and the additional intra prediction modes comprised in the table.