Title:
TRANSFORM-BASED IMAGE CODING METHOD AND DEVICE THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/071283
Kind Code:
A1
Abstract:
An image decoding method, according to the present document, comprises the steps of: deriving residual samples by applying at least one among LFNST or MTS to a transform coefficient; and generating a reconstructed picture on the basis of the residual samples, wherein the LFNST is carried out on the basis of a LFNST index indicating a LFNST kernel, the MTS is carried out on the basis of a MTS index indicating a MTS kernel, the MTS index is parsed on the basis that the color index of the current block is a luma component, and the LFNST index may be parsed regardless of the color index of the current block.
Inventors:
KOO MOONMO (KR)
LIM JAEHYUN (KR)
KIM SEUNGHWAN (KR)
SALEHIFAR MEHDI (KR)
LIM JAEHYUN (KR)
KIM SEUNGHWAN (KR)
SALEHIFAR MEHDI (KR)
Application Number:
PCT/KR2020/013734
Publication Date:
April 15, 2021
Filing Date:
October 08, 2020
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04N19/60; H04N19/122; H04N19/132; H04N19/176; H04N19/18; H04N19/186; H04N19/70
Foreign References:
| KR20180085526A | 2018-07-27 | |||
| KR101997604B1 | 2019-07-08 | |||
| KR20190052008A | 2019-05-15 |
Other References:
BENJAMIN BROSS , JIANLE CHEN , SHAN LIU: "Versatile Video Coding (Draft 6)", 127. MPEG MEETING; 20190708 - 20190712; GOTHENBURG; (MOTION PICTURE EXPERT GROUP OR ISO/IEC JTC1/SC29/WG11), GOTHENBURG SE, no. JVET-O2001-VE, 31 July 2019 (2019-07-31), Gothenburg SE, pages 1 - 455, XP030208568
J. LAINEMA (NOKIA): "CE6-related: Latency reduction for LFNST signalling", 16. JVET MEETING; 20191001 - 20191011; GENEVA; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-P0196, 24 September 2019 (2019-09-24), XP030216572
J. LAINEMA (NOKIA): "CE6-related: Latency reduction for LFNST signalling", 16. JVET MEETING; 20191001 - 20191011; GENEVA; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-P0196, 24 September 2019 (2019-09-24), XP030216572
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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