Title:
CONTEXT-BASED INTRA PREDICTION
Document Type and Number:
WIPO Patent Application WO/2020/114445
Kind Code:
A1
Abstract:
A method for video processing is provided. The method includes performing downsampling on chroma and luma samples of a neighboring block of the current video block; determining, for a conversion between a current video block of a video that is a chroma block and a coded representation of the video, parameters of cross-component linear model (CCLM) based on the downsampled chroma and luma samples obtained from the downsampling; applying the CCLM on luma samples located in a luma block corresponding to the current video block to derive prediction values of the current video block; and performing the conversion based on the prediction values.
Inventors:
ZHANG KAI (US)
ZHANG LI (US)
LIU HONGBIN (CN)
XU JIZHENG (US)
WANG YUE (CN)
ZHANG LI (US)
LIU HONGBIN (CN)
XU JIZHENG (US)
WANG YUE (CN)
Application Number:
PCT/CN2019/123229
Publication Date:
June 11, 2020
Filing Date:
December 05, 2019
Export Citation:
Assignee:
BEIJING BYTEDANCE NETWORK TECH CO LTD (CN)
BYTEDANCE INC (US)
BYTEDANCE INC (US)
International Classes:
H04N19/50; H04N19/186
Domestic Patent References:
| WO2018132710A1 | 2018-07-19 |
Foreign References:
| CN103096055A | 2013-05-08 | |||
| US20170295365A1 | 2017-10-12 |
Other References:
JANGWON CHOI ET AL: "CE3-related : Reduced number of reference samples for CCLM parameter calculation", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, no. JVET-L0138, 12 October 2018 (2018-10-12), Macao CN, XP030193668
XIANG MA ET AL: "CE3: CCLM/MDLM using simplified coefficients derivation method (Test 5.6.15.6.2 and 5.6.3)", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, no. JVET-L0340, 12 October 2018 (2018-10-12), Macao CN, pages 1 - 6, XP030194047
KAI ET ZHANG ET AL: "CE3-related: CCLM prediction with single-line neighbouring luma samples", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, no. JVET-L0329, 12 October 2018 (2018-10-12), Macao CN, pages 1 - 3, XP030193850
See also references of EP 3871415A4
XIANG MA ET AL: "CE3: CCLM/MDLM using simplified coefficients derivation method (Test 5.6.15.6.2 and 5.6.3)", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, no. JVET-L0340, 12 October 2018 (2018-10-12), Macao CN, pages 1 - 6, XP030194047
KAI ET ZHANG ET AL: "CE3-related: CCLM prediction with single-line neighbouring luma samples", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, no. JVET-L0329, 12 October 2018 (2018-10-12), Macao CN, pages 1 - 3, XP030193850
See also references of EP 3871415A4
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (CN)
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