SUB-BLOCK BASED USE OF TRANSFORM SKIP MODE - BEIJING BYTEDANCE NETWORK TECH CO LTD

Title:

SUB-BLOCK BASED USE OF TRANSFORM SKIP MODE

Document Type and Number:

WIPO Patent Application WO/2020/233664

Kind Code:

A1

Abstract:

Devices, systems and methods for lossless coding for visual media coding are described. An exemplary method for video processing includes determining, at a sub-block level of a current video block comprising multiple sub-blocks, whether a coding mode is enabled for representing a corresponding sub-block in a bitstream representation, where, for a given sub-block with the coding mode enabled, the given sub-block is represented in the coded representation without applying a forward transform or the given sub-block is reconstructed from the coded representation without applying an inverse transform, and performing, based on the determining, a conversion between the current video block of a video and the bitstream representation of the video.

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Inventors:

ZHANG LI (US)
ZHANG KAI (US)
LIU HONGBIN (CN)
ZHANG NA (CN)
WANG YUE (CN)

Application Number:

PCT/CN2020/091543

Publication Date:

November 26, 2020

Filing Date:

May 21, 2020

Export Citation:

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Assignee:

BEIJING BYTEDANCE NETWORK TECH CO LTD (CN)
BYTEDANCE INC (US)

International Classes:

H04N19/176; H04N19/12; H04N19/186

Foreign References:

CN104509113A	2015-04-08
US20130003838A1	2013-01-03
US20140146894A1	2014-05-29

Other References:

FANGJUN PU ET AL: "CE12-4: SDR In-loop Reshaping", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 12TH MEETING, 12 October 2018 (2018-10-12), Macao,CN, XP030193784
TAORAN LU ET AL: "CE12: Mapping functions (test CE12-1 and CE12-2)", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 13TH MEETING, 18 January 2019 (2019-01-18), Marrakech,MA, XP030198178
JONATHAN PFAFF ET AL: "CE3: Affine linear weighted intra prediction (CE3-4.1,CE3-4.2)", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 14TH MEETING, 27 March 2019 (2019-03-27), Geneva,CH, XP030202699

Attorney, Agent or Firm:

LIU, SHEN & ASSOCIATES (CN)

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