US 11,991,397 B2
Palette mode with local dual tree modetype definition
Zhipin Deng, Beijing (CN); Ye-kui Wang, San Diego, CA (US); Li Zhang, San Diego, CA (US); and Kai Zhang, San Diego, CA (US)
Assigned to BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., Beijing (CN); and BYTEDANCE INC., Los Angeles, CA (US)
Filed by Beijing Bytedance Network Technology Co., Ltd., Beijing (CN); and Bytedance Inc., Los Angeles, CA (US)
Filed on Nov. 29, 2022, as Appl. No. 18/071,335.
Application 18/071,335 is a continuation of application No. PCT/CN2021/096707, filed on May 28, 2021.
Prior Publication US 2023/0111806 A1, Apr. 13, 2023
Int. Cl. H04N 19/70 (2014.01); H04N 19/169 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/1883 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of processing video data, comprising:
performing a conversion between a video comprising a video block and a bitstream of the video according to a rule,
wherein the video block is a coding tree node that includes one or more coding blocks,
wherein the rule specifies that one or more of the following coding modes are allowed to be used by one or more luma blocks of the one or more coding blocks: an intra prediction coding mode, an intra block copy (IBC) mode and a palette coding mode, and the intra prediction coding mode is applied to one or more chroma blocks of the one or more coding blocks, when a local dual tree is applied to the one or more coding blocks inside the coding tree node, and that an inter prediction coding mode is not allowed for the one or more coding blocks in the coding tree node to which the local dual tree is applied,
wherein the rule specifies that a presence of a first syntax element is at least based on that a value of a variable named mode type is MODE_TYPE_INTRA or MODE_TYPE_ALL, and in a case that the value of the variable named mode type is MODE_TYPE_INTER, the first syntax element is not present, and wherein the first syntax element indicates whether the palette coding mode is enabled for a coding block of the one or more coding blocks, and
wherein the rule further specifies that a third syntax element in a general constraint information syntax structure controls a value of a fourth syntax element in a sequence parameter set, wherein the fourth syntax element indicates whether subpicture information is present in a coded layer video sequence and whether more than one subpictures are included in each picture of the coded layer video sequence.