Patent

Registered IMAGE ENCODING/DECODING METHOD AND APPARATUS, AND RECORDING MEDIUM STORING BITSTREAM

Inventors
Sung-Chang Lim, Lee Hahyun, Kang Jung Won, Jinho Lee, Kim Hui Yong, Choi Jin Soo
Application No.
202080019220.2 (2020.03.06)
Publication No.
113545089 (2021.10.22)
Registration No.
ZL202080019220.2 (2024.07.02)
Country
CHINA
Project Code
19HR2300, Development and Standardization of 5th Generation Video/Audio Coding Technology for Ultra Gifh Quality Media Services, Kang Jung Won
Abstract
The present invention relates to a method and an apparatus for transform-based image encoding/decoding. An image decoding method according to the present invention may comprise the steps of: determining a horizontal transform type and a vertical transform type of a current block; deriving a residual block of the current block by performing inverse transform of the current block on the basis of the determined horizontal transform type and vertical transform type; and reconstructing the current block on basis of the residual block, wherein the step of determining the horizontal transform type and the vertical transform type is performed on the basis of at least one of a horizontal size and a vertical size of the current block, regardless of an intra prediction mode of the current block, when the current block is in an intra sub-block partition (ISP) mode.
KSP Keywords
Image decoding, Image encoding, Intra-prediction, Inverse Transform, Prediction mode, decoding method, intra prediction mode
Family
 
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Status Patent Country KIPRIS
Registered IMAGE ENCODING/DECODING METHOD AND APPARATUS, AND RECORDING MEDIUM STORING BITSTREAM UNITED STATES