US 11,917,166 B2
Weighted angular prediction coding for intra coding
Yue Yu, San Diego, CA (US); Limin Wang, San Diego, CA (US); and Krit Panusopone, San Diego, CA (US)
Assigned to ARRIS Enterprises LLC, Suwanee, GA (US)
Filed by ARRIS Enterprises LLC, Suwanee, GA (US)
Filed on Dec. 9, 2022, as Appl. No. 18/078,743.
Application 18/078,743 is a continuation of application No. 17/475,136, filed on Sep. 14, 2021, granted, now 11,553,189.
Application 17/475,136 is a continuation of application No. 16/823,853, filed on Mar. 19, 2020, granted, now 11,153,573, issued on Oct. 19, 2021.
Application 16/823,853 is a continuation of application No. 15/605,905, filed on May 25, 2017, granted, now 10,645,395, issued on May 5, 2020.
Claims priority of provisional application 62/486,939, filed on Apr. 18, 2017.
Claims priority of provisional application 62/481,671, filed on Apr. 4, 2017.
Claims priority of provisional application 62/481,285, filed on Apr. 4, 2017.
Claims priority of provisional application 62/341,210, filed on May 25, 2016.
Prior Publication US 2023/0105035 A1, Apr. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/159 (2014.01); H04N 19/126 (2014.01); H04N 19/184 (2014.01); H04N 19/593 (2014.01); H04N 19/169 (2014.01); G01B 11/00 (2006.01)
CPC H04N 19/159 (2014.11) [G01B 11/002 (2013.01); H04N 19/126 (2014.11); H04N 19/184 (2014.11); H04N 19/1883 (2014.11); H04N 19/593 (2014.11)] 4 Claims
OG exemplary drawing
 
1. An apparatus for decoding video data using a decoder comprising one or more processors configured to:
(a) receive a bitstream indicating how a coding tree unit was partitioned into coding units according to a partitioning structure that allows nodes to be split according to a partitioning technique, where said partitioning technique allows nodes to be partitioned with quadtree partitioning, where said partitioning technique allows nodes to be partitioned with binary partitioning, wherein a node is recursively partitionable using said binary partitioning, where at least one of said binary partitioning results in a rectangular node;
(b) parsing said bitstream to generate at least one predictor based on an intra prediction mode signaled in the bitstream, the intra prediction mode selected from a plurality of intra prediction modes for calculating a prediction pixel P[x,y] at coordinate x,y for the coding unit;
(c) wherein the prediction pixel is calculated based upon a value where said value is determined based upon, a vertical pixel value being based upon at least one reconstructed pixel value of a next adjacent row above the coding unit, a horizontal pixel value being based upon at least one reconstructed pixel value of a next adjacent column left of the coding unit, said vertical pixel value having an associated vertical weight, said horizontal pixel value having an associated horizontal weight, a summation of (i) said vertical pixel value multiplied by said vertical weight (ii) said horizontal pixel value multiplied by said horizontal weight and (iii) an adjustment value based upon said vertical weight and said horizontal weight, and a value based upon said summation shifted by a bit shift operation to the right,
(d) wherein 65 intra angular prediction modes are reduced to 64 intra prediction modes by replacing a first non-weighted intra prediction mode 2 directed in a first direction and a second non-weighted intra prediction mode 66 directed in a second direction opposite of the first direction with at least one of a weighted intra prediction mode 2 or a weighted intra prediction mode 66.