Title:
TRANSFORM-BASED IMAGE CODING METHOD, AND APPARATUS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/066598
Kind Code:
A1
Abstract:
An image decoding method according to the present document comprises: a residual coding step for parsing residual information received in a residual coding level and arranging transform coefficients for a current block according to a predetermined scanning order; a step for deriving residual samples by applying at least one of LFNST or MTS to the transform coefficients; and a step for generating a reconstructed picture on the basis of the residual samples, wherein the LFNST is performed on the basis of an LFNST index indicating an LFNST kernel, the MTS is performed on the basis of an MTS index indicating an MTS kernel, the LFNST index and the MTS index are signaled in a coding unit level, and the MTS index is signaled immediately after the signaling of the LFNST index.
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/KR2020/013459
Publication Date:
April 08, 2021
Filing Date:
October 05, 2020
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04N19/60; H04N19/119; H04N19/132; H04N19/176; H04N19/18; H04N19/186; H04N19/70
Foreign References:
| 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
S. DE-LUXÁN-HERNÁNDEZ, V. GEORGE, G. VENUGOPAL, J. BRANDENBURG, B. BROSS, H. SCHWARZ, D. MARPE, T. WIEGAND (HHI), M. KOO, M. SALEH: "Non-CE6: Combination of ISP and LFNST", 16. JVET MEETING; 20191001 - 20191011; GENEVA; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-P0392 ; m50359, 3 October 2019 (2019-10-03), XP030217173
See also references of EP 4017010A4
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
S. DE-LUXÁN-HERNÁNDEZ, V. GEORGE, G. VENUGOPAL, J. BRANDENBURG, B. BROSS, H. SCHWARZ, D. MARPE, T. WIEGAND (HHI), M. KOO, M. SALEH: "Non-CE6: Combination of ISP and LFNST", 16. JVET MEETING; 20191001 - 20191011; GENEVA; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-P0392 ; m50359, 3 October 2019 (2019-10-03), XP030217173
See also references of EP 4017010A4
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
Download PDF: