公开(公告)号：US20210235119A1

公开(公告)日：2021-07-29

申请号：US15734806

申请日：2019-06-07

Applicant: LG ELECTRONICS INC.

Inventor： Seunghwan KIM ,  Medhi SALEHIFAR ,  Moonmo KOO ,  Jaehyun LIM

IPC: H04N19/61 ,  H04N19/11 ,  H04N19/176 ,  H04N19/593

Abstract: The present disclosure, in a method of decoding a video signal, provides a method including checking whether a transform skip is applied to a current block; acquiring a transform index indicating transform types applied to a horizontal direction and a vertical direction of the current block from among a plurality of predefined transform types from the video signal when the transform skip is not applied to the current block; and performing an inverse primary transform on the current block using the transform types indicated by the transform index, wherein the transform types applied to the horizontal direction and the vertical direction of the current block are determined from among transform types defined according to an intra prediction mode of the current block based on the transform index.

公开(公告)号：US20240244261A1

公开(公告)日：2024-07-18

申请号：US18616972

申请日：2024-03-26

Applicant: LG ELECTRONICS INC.

Inventor： Seunghwan KIM ,  Medhi SALEHIFAR ,  Moonmo KOO ,  Jaehyun LIM

IPC: H04N19/61 ,  H04N19/11 ,  H04N19/176 ,  H04N19/593

CPC classification number: H04N19/61 ,  H04N19/11 ,  H04N19/176 ,  H04N19/593

Abstract: The present disclosure, in a method of decoding a video signal, provides a method including checking whether a transform skip is applied to a current block; acquiring a transform index indicating transform types applied to a horizontal direction and a vertical direction of the current block from among a plurality of predefined transform types from the video signal when the transform skip is not applied to the current block; and performing an inverse primary transform on the current block using the transform types indicated by the transform index, wherein the transform types applied to the horizontal direction and the vertical direction of the current block are determined from among transform types defined according to an intra prediction mode of the current block based on the transform index.