US 12,231,693 B2
Entropy coding for palette escape symbol
Weijia Zhu, San Diego, CA (US); Jizheng Xu, San Diego, CA (US); Li Zhang, San Diego, CA (US); and Hsiao Chiang Chuang, San Diego, CA (US)
Assigned to Bytedance Inc., Los Angeles, CA (US)
Filed by Bytedance Inc., Los Angeles, CA (US)
Filed on Oct. 11, 2023, as Appl. No. 18/485,088.
Application 18/485,088 is a continuation of application No. 17/965,325, filed on Oct. 13, 2022, granted, now 11,943,481.
Application 17/965,325 is a continuation of application No. 17/671,422, filed on Feb. 14, 2022, granted, now 11,503,344, issued on Nov. 15, 2022.
Application 17/671,422 is a continuation of application No. PCT/US2020/046581, filed on Aug. 15, 2020.
Claims priority of application No. PCT/CN2019/100850 (WO), filed on Aug. 15, 2019; application No. PCT/CN2019/106700 (WO), filed on Sep. 19, 2019; application No. PCT/CN2019/107494 (WO), filed on Sep. 24, 2019; application No. PCT/CN2019/108736 (WO), filed on Sep. 27, 2019; application No. PCT/CN2019/109793 (WO), filed on Oct. 1, 2019; application No. PCT/CN2019/113931 (WO), filed on Oct. 29, 2019; and application No. PCT/CN2020/071221 (WO), filed on Jan. 9, 2020.
Prior Publication US 2024/0056609 A1, Feb. 15, 2024
Int. Cl. H04N 19/70 (2014.01); H04N 19/132 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/132 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method for processing video data, comprising:
determining, for a conversion between a current video block of a video and a bitstream of the video, that a prediction mode is applied to the current video block, wherein in the prediction mode, reconstructed samples are represented by a set of representative color values, and the set of representative color values comprises at least one of 1) palette predictors, 2) escaped samples, or 3) palette information included in the bitstream; and
performing the conversion at least based on the prediction mode,
wherein a first syntax element specifying a quantized value of the escaped sample is included in the bitstream, and wherein a binarization of the first syntax element uses an exponential-Golomb (EG) code of order K, K a non-negative integer that is unequal to three,
wherein a reconstructed escaped sample is generated based on a Clip function and the quantized value of the escaped sample,
wherein the reconstructed escaped sample is further determined based on qP which specifies a quantization parameter, and
wherein the qP is determined based on Max (QpPrimeTsMin, Qp′Y), where QpPrimeTsMin denotes a minimum allowed quantization parameter for a transform skip mode, and Qp′Y denotes a luma quantization parameter.