ビデオデコーディングのための方法、デバイス、およびコンピュータプログラム

Japanese Patent JP7439344

B2

This disclosure relates to cross component methods for refining decoded transform coefficients before or after dequantization in video decoding. For example, a method for video decoding is disclosed. The method may include, comprising extracting a first transform coefficient of a first color component from a bitstream of a coded video; extracting a second transform coefficient of a second color component from the bitstream of the coded video; deriving an offset value based on a magnitude or sign value of the first transform coefficient; adding the offset value to a magnitude of the second transform coefficient to generate a modified second transform coefficient for the second color component; and reconstructing the coded video based on at least the first transform coefficient of the first color component and the modified second transform coefficient of the second color component.

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WO/2020/175938	METHOD FOR ENCODING/DECODING IMAGE SIGNAL, AND DEVICE THEREFOR

Shin Jiao
Madou Pellinger Sally Krishnan
Shan Ryu

JP2023525098A

February 27, 2024

January 28, 2022

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Tencent America LLC

H04N19/593

JP2017135564A

US20210076070
US20200260097
US20190208205
WO2015055832A1

Christian Helmrich, et al.,CE7-related: Joint chroma residual coding with multiple modes,Joint Video Experts Team (JVET) of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11,JVET-N0282-v3,14th Meeting: Geneva, CH,2019年03月,pp.1-10
Christian Helmrich, et al.,CE7-related: Alternative configuration for joint chroma residual coding,Joint Video Experts Team (JVET) of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11,JVET-O0543-v2,15th Meeting: Gothenburg, SE,2019年06月,pp.1-8

Shinya Mihiro
Naoki Matsuo

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