US 12,113,991 B2
Systems and methods for liner model derivation
Xinwei Li, Beijing (CN); Jie Chen, Beijing (CN); Ru-Ling Liao, Beijing (CN); and Yan Ye, San Mateo, CA (US)
Assigned to Alibaba Group Holding Limited, Grand Cayman (KY)
Filed by ALIBABA GROUP HOLDING LIMITED, Grand Cayman (KY)
Filed on May 26, 2023, as Appl. No. 18/324,684.
Application 18/324,684 is a continuation of application No. 17/650,336, filed on Feb. 8, 2022, granted, now 11,711,528.
Claims priority of provisional application 63/151,850, filed on Feb. 22, 2021.
Prior Publication US 2023/0300352 A1, Sep. 21, 2023
Int. Cl. H04N 19/196 (2014.01); H04N 19/159 (2014.01); H04N 19/184 (2014.01); H04N 19/44 (2014.01)
CPC H04N 19/196 (2014.11) [H04N 19/159 (2014.11); H04N 19/184 (2014.11); H04N 19/44 (2014.11)] 12 Claims
OG exemplary drawing
 
1. A video data processing method, comprising:
receiving a bitstream;
decoding an index associated with a coding unit based on the bitstream, the index indicating a selection mode among at least four selection modes;
determining whether a plurality of top neighboring samples and a plurality of left neighboring samples are available;
determining four samples based on the index;
determining two parameters based on the four samples;
determining predicted samples of the coding unit based on the two parameters; and
decoding the coding unit based on the predicted samples;
wherein determining the four samples based on the index further comprises:
determining the four samples based on an availability of the plurality of the top neighboring samples and the plurality of the left neighboring samples; and
in response to both of the plurality of the top neighboring samples and the plurality of the left neighboring samples being available, determining two of the four samples among the plurality of top neighboring samples and other two of the four samples among the plurality of left neighboring samples;
in response to the plurality of the top neighboring samples being not available and the plurality of the left neighboring samples being available, determining the four samples among the plurality of left neighboring samples; or
in response to the plurality of the top neighboring samples being available and the plurality of the left neighboring samples being not available, determining the four samples among the plurality of top neighboring samples.