Title:
RESIDUAL CODING FOR TRANSFORM SKIPPED BLOCKS
Document Type and Number:
WIPO Patent Application WO/2021/032145
Kind Code:
A1
Abstract:
A video processing method includes determining, for a conversion between a current block of a video and a bitstream representation of the video, whether to enable a level mapping operation or a level remapping operation based on a rule, wherein the level mapping operation or the level remapping operation includes changing between a first representation of a residual coefficient of the current block and a second representation of the residual coefficient of the current block based on neighbouring residual coefficients of the residual coefficient; and performing the conversion by selectively using the level mapping operation or the level remapping operation based on the determining,
Inventors:
ZHANG LI (US)
ZHANG KAI (US)
XU JIZHENG (US)
LIU HONGBIN (CN)
WANG YUE (CN)
ZHANG KAI (US)
XU JIZHENG (US)
LIU HONGBIN (CN)
WANG YUE (CN)
Application Number:
PCT/CN2020/110150
Publication Date:
February 25, 2021
Filing Date:
August 20, 2020
Export Citation:
Assignee:
BEIJING BYTEDANCE NETWORK TECH CO LTD (CN)
BYTEDANCE INC (US)
BYTEDANCE INC (US)
International Classes:
H04N19/169; H04N19/129
Domestic Patent References:
| WO2013003584A1 | 2013-01-03 |
Other References:
JUNGAH CHOI , SUNNI YOO , JIN HEO , JAEKHYUN LIM: "Reports on level mapping off versus level mapping on", 17. JVET MEETING; 20200107 - 20200117; BRUSSELS; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-Q0298, 31 December 2019 (2019-12-31), Brussels,BE, pages 1 - 8, XP030223100
MARTA KARCZEWICZ , HONGTAO WANG , MUHAMMED COBAN , YUNG-HUSAIN CHAO , YU HAN: "CE7: Sign context, level mapping, and bitplane coding for TS residual coding (CE7-3.7, CE7-3.8, CE7-3.9, CE7-3.10, and CE7-3.11)", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 15TH MEETING: GOTHENBURG SE12 JULY 2019, no. m48213, 19 June 2019 (2019-06-19), Gothenburg SE, pages 1 - 11, XP030205429
MARTA KARCZEWICZ , MUHAMMED COBAN: "CE8-related: Sign context modelling and level mapping for TS residual coding", 14. JVET MEETING; 20190319 - 20190327; GENEVA; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-N0455, 13 March 2019 (2019-03-13), Geneva CH, pages 1 - 4, XP030203098
BROSS (FRAUNHOFER) B; NGUYEN T; KEYDEL P; SCHWARZ H; MARPE D; WIEGAND (HHI) T: "Non-CE8: Unified Transform Type Signalling and Residual Coding for Transform Skip", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 13TH MEETING: MARRAKECH 18 JAN. 2019, no. JVET-M0464, 18 January 2019 (2019-01-18), pages 1 - 11, XP030200509
MARTA KARCZEWICZ , YU HAN , YUNG-HUSUAN CHAO , MUHAMMED COBAN: "CE7-related: Alternative method to RDPCM with TS level mapping", 15. JVET MEETING; 20190703 - 20190712; GOTHENBURG; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-O0556, 12 July 2019 (2019-07-12), Gothenburg SE, pages 1 - 3, XP030219895
See also references of EP 4000266A4
MARTA KARCZEWICZ , HONGTAO WANG , MUHAMMED COBAN , YUNG-HUSAIN CHAO , YU HAN: "CE7: Sign context, level mapping, and bitplane coding for TS residual coding (CE7-3.7, CE7-3.8, CE7-3.9, CE7-3.10, and CE7-3.11)", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 15TH MEETING: GOTHENBURG SE12 JULY 2019, no. m48213, 19 June 2019 (2019-06-19), Gothenburg SE, pages 1 - 11, XP030205429
MARTA KARCZEWICZ , MUHAMMED COBAN: "CE8-related: Sign context modelling and level mapping for TS residual coding", 14. JVET MEETING; 20190319 - 20190327; GENEVA; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-N0455, 13 March 2019 (2019-03-13), Geneva CH, pages 1 - 4, XP030203098
BROSS (FRAUNHOFER) B; NGUYEN T; KEYDEL P; SCHWARZ H; MARPE D; WIEGAND (HHI) T: "Non-CE8: Unified Transform Type Signalling and Residual Coding for Transform Skip", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 13TH MEETING: MARRAKECH 18 JAN. 2019, no. JVET-M0464, 18 January 2019 (2019-01-18), pages 1 - 11, XP030200509
MARTA KARCZEWICZ , YU HAN , YUNG-HUSUAN CHAO , MUHAMMED COBAN: "CE7-related: Alternative method to RDPCM with TS level mapping", 15. JVET MEETING; 20190703 - 20190712; GOTHENBURG; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-O0556, 12 July 2019 (2019-07-12), Gothenburg SE, pages 1 - 3, XP030219895
See also references of EP 4000266A4
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (CN)
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