Transform-based image coding method, and apparatus therefor

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United States of America Patent

PATENT NO 11516484
APP PUB NO 20220217364A1
SERIAL NO

17707000

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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.

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Patent Owner(s)

  • LG ELECTRONICS INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kim, Seunghwan Seoul, KR 690 1826
Koo, Moonmo Seoul, KR 253 717
Lim, Jaehyun Seoul, KR 567 4010
Salehifar, Mehdi Seoul, KR 111 233

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