TRANSFORM-BASED IMAGE CODING METHOD AND DEVICE THEREFOR

Title:

TRANSFORM-BASED IMAGE CODING METHOD AND DEVICE THEREFOR

Document Type and Number:

WIPO Patent Application WO/2021/096290

Kind Code:

A1

Abstract:

An image decoding method according to the present document comprises the step of deriving modified transform coefficients, wherein the step of deriving the modified transform coefficients comprises the step of parsing an LFNST index on the basis of a variable indicating whether an ISP is applied to a current block or whether an effective coefficient is present in a DC component of the current block, according to the tree type of the current block, wherein the variable may be derived on the basis of an individual transform skip flag value for a color component of the current block.

More Like This:

JPS61294585	CONVERTION CODING SYSTEM FOR PICTURE SIGNAL
JPH0275291	ORTHOGONAL CONVERSION CODING DEVICE
JP6410853	Coding device, coding method and program, decoding device, decoding method and program

Inventors:

KOO MOONMO (KR)
KIM SEUNGHWAN (KR)
LIM JAEHYUN (KR)

Application Number:

PCT/KR2020/015996

Publication Date:

May 20, 2021

Filing Date:

November 13, 2020

Export Citation:

Click for automatic bibliography generation Help

Assignee:

LG ELECTRONICS INC (KR)

International Classes:

H04N19/60; H04N19/122; H04N19/132; H04N19/18; H04N19/186; H04N19/70; H04N19/96

Foreign References:

US20190149822A1	2019-05-16
KR20180063187A	2018-06-11
KR20180063006A	2018-06-11
KR101730639B1	2017-04-26

Other References:

B. BROSS, J. CHEN, S. LIU, Y.-K. 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 ), 12 November 2019 (2019-11-12), XP030224328
See also references of EP 4060994A4