Title:
SYNTAX ELEMENT FOR CHROMA RESIDUAL SCALING
Document Type and Number:
WIPO Patent Application WO/2020/259427
Kind Code:
A1
Abstract:
A method for visual media processing includes processing a bitstream representation for a conversion between a current video block in a video region of a visual media data and the bitstream representation. The bitstream representation is based on a rule that specifies that one or more syntax elements used in a luma-dependent chroma residual scaling step are selectively included in the bitstream representation. The luma-dependent chroma residual scaling step includes scaling chroma samples based on neighboring reconstructed luma samples during the conversion. The one or more syntax elements are usable to derive a chroma residual scaling factor used for the scaling.
Inventors:
DENG ZHIPIN (CN)
ZHANG LI (US)
LIU HONGBIN (CN)
ZHANG KAI (US)
XU JIZHENG (US)
ZHANG LI (US)
LIU HONGBIN (CN)
ZHANG KAI (US)
XU JIZHENG (US)
Application Number:
PCT/CN2020/097374
Publication Date:
December 30, 2020
Filing Date:
June 22, 2020
Export Citation:
Assignee:
BEIJING BYTEDANCE NETWORK TECH CO LTD (CN)
BYTEDANCE INC (US)
BYTEDANCE INC (US)
International Classes:
H04N19/50
Domestic Patent References:
| WO2015066525A1 | 2015-05-07 |
Foreign References:
| CN109804625A | 2019-05-24 |
Other References:
EDOUARD FRANCOIS ET AL.: "Chroma residual scaling with separate luma/chroma tree", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11: JVET-N0389R2, 27 March 2019 (2019-03-27), pages 1 - 4, XP030204640
JIE CHEN ET AL.: "Description of Core Experiment 2 (CE2): luma-chroma dependency reduction", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11: 14TH MEETING:GENEVA, 27 March 2019 (2019-03-27), pages 3 - 10, XP030205137
JIE ZHAO ET AL.: "On Luma Dependent Chroma Residual Scaling of In-loop Reshaper", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11: JVET-N0299, 27 March 2019 (2019-03-27), pages 1 - 4, XP030204170
YE-KUI WANG ET AL.: "AHG17: Signalling of reshaper parameters in APS", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11: JVET-N0117-V1, 27 March 2019 (2019-03-27), pages 1 - 8, XP030202641
FRANCOIS (TECHNICOLOR) E ET AL.: "Suggested luma mapping witih chroma scaling modifications in N0220/N0389/N0477", 14. JVET MEETING; 20190319 - 20190327; GENEVA; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16, no. JVET-N0806, 22 March 2019 (2019-03-22)
See also references of EP 3973707A4
JIE CHEN ET AL.: "Description of Core Experiment 2 (CE2): luma-chroma dependency reduction", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11: 14TH MEETING:GENEVA, 27 March 2019 (2019-03-27), pages 3 - 10, XP030205137
JIE ZHAO ET AL.: "On Luma Dependent Chroma Residual Scaling of In-loop Reshaper", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11: JVET-N0299, 27 March 2019 (2019-03-27), pages 1 - 4, XP030204170
YE-KUI WANG ET AL.: "AHG17: Signalling of reshaper parameters in APS", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11: JVET-N0117-V1, 27 March 2019 (2019-03-27), pages 1 - 8, XP030202641
FRANCOIS (TECHNICOLOR) E ET AL.: "Suggested luma mapping witih chroma scaling modifications in N0220/N0389/N0477", 14. JVET MEETING; 20190319 - 20190327; GENEVA; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16, no. JVET-N0806, 22 March 2019 (2019-03-22)
See also references of EP 3973707A4
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (CN)
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