US 11,889,079 B2
Constrained prediction mode for video coding
Jianle Chen, San Diego, CA (US); Yin Zhao, Hangzhou (CN); and Semih Esenlik, Munich (DE)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Feb. 20, 2023, as Appl. No. 18/171,596.
Application 18/171,596 is a continuation of application No. 17/318,071, filed on May 12, 2021, granted, now 11,589,048.
Application 17/318,071 is a continuation of application No. PCT/US2019/065015, filed on Dec. 6, 2019.
Claims priority of provisional application 62/785,208, filed on Dec. 26, 2018.
Claims priority of provisional application 62/776,868, filed on Dec. 7, 2018.
Prior Publication US 2023/0209053 A1, Jun. 29, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/119 (2014.01); H04N 19/132 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/169 (2014.01); H04N 19/46 (2014.01); H04N 19/96 (2014.01)
CPC H04N 19/119 (2014.11) [H04N 19/132 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/1883 (2014.11); H04N 19/46 (2014.11); H04N 19/96 (2014.11)] 16 Claims
OG exemplary drawing
 
1. An encoding method, comprising:
splitting a coding tree node into at least one coding node (CU) according to a split mode, wherein the split mode is one of quad tree (QT) split, triple tree (TT) split, or binary tree (BT) split, and wherein the TT split comprises vertical TT and horizontal TT, and the BT split comprises vertical BT and horizontal BT;
determining that the coding tree node is not allowed to use the BT split when a width or a height of the coding tree node is greater than a maximum BT Size (maxBTSize);
encoding a syntax element related to the split mode into a bitstream;
determining the CU is not allowed to be predicted by intra prediction when:
the split mode of the coding tree node is the TT split and the width of the coding tree node or the height of the coding tree node is greater than a threshold;
the split mode of the coding tree node is the vertical BT and the width of the coding tree node is less than or equal to the threshold, and the height of the coding tree node is greater than the threshold; or
the split mode of the coding tree node is the horizontal BT and the height of the coding tree node is less than or equal to the threshold, and the width of the coding tree node is greater than the threshold; and
determining that a prediction mode flag is not encoded into the bitstream when the CU is not allowed to be predicted by intra prediction.