公开(公告)号：US20250030892A1

公开(公告)日：2025-01-23

申请号：US18906831

申请日：2024-10-04

Applicant: LG ELECTRONICS INC.

Inventor： Moonmo KOO ,  Seughwan Kim ,  Jaehyun Kim

IPC: H04N19/60 ,  H04N19/122 ,  H04N19/124 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/70 ,  H04N19/96

Abstract: An image decoding method according to the present document may comprise: a step of deriving transform coefficients for a current block by performing inverse quantization on the basis of residual information; and a step of deriving modified transform coefficients by applying LFNST to the transform coefficients, wherein the step of deriving the transform coefficients comprises a step of parsing position information of a last non-zero transform coefficient, an LFNST index related to application of the LFNST is parsed after parsing a position of the last non-zero transform coefficient, and the transform coefficients are derived after parsing the LFNST index.