Title:
TRANSFORMATION-BASED IMAGE CODING METHOD AND DEVICE THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/096174
Kind Code:
A1
Abstract:
An image decoding method according to the present document comprises the steps of: determining whether or not an effective coefficient is present in a second area not including an upper-left first area of a current block; parsing an MTS index from a bitstream on the basis that the effective coefficient is not present in the second area; and deriving residual samples for the current block by applying a transform kernel, which is derived on the basis of the MTS index, to transform coefficients in the first area, wherein the MTS index can be parsed on the basis that the effective coefficient, which is present in a scan sub-block which is scanned for the effective coefficient, is not present in the second area.
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Inventors:
KOO MOONMO (KR)
KIM SEUNGHWAN (KR)
SALEHIFAR MEHDI (KR)
LIM JAEHYUN (KR)
KIM SEUNGHWAN (KR)
SALEHIFAR MEHDI (KR)
LIM JAEHYUN (KR)
Application Number:
PCT/KR2020/015589
Publication Date:
May 20, 2021
Filing Date:
November 09, 2020
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04N19/60; H04N19/122; H04N19/129; H04N19/132; H04N19/176; H04N19/18; H04N19/70
Foreign References:
| KR102025508B1 | 2019-09-25 | |||
| KR20180063187A | 2018-06-11 | |||
| KR20180063006A | 2018-06-11 | |||
| KR101730639B1 | 2017-04-26 |
Other References:
BENJAMIN BROSS , JIANLE CHEN , SHAN LIU , YE-KUI WANG: "Versatile Video Coding (Draft 7)", 16. JVET MEETING; 20191001 - 20191011; GENEVA; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-P2001-vB, 31 October 2019 (2019-10-31), Geneva, pages 1 - 488, XP030224327
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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