公开(公告)号：US10743025B2

公开(公告)日：2020-08-11

申请号：US16329624

申请日：2017-09-01

Applicant: LG ELECTRONICS INC.

Inventor： Bohan Li ,  Arash Vosoughi ,  Onur G. Guleryuz

IPC: H04N19/60 ,  H04N19/88 ,  H04N19/91 ,  G06F7/78

Abstract: The present invention provides a method for performing transformation using a layered Givens transform (LGT), comprising the steps of: deriving at least one rotation layer and at least one permutation layer on the basis of a given transform matrix (H) and a given error parameter; acquiring a LGT coefficient on the basis of the rotation layer and the permutation layer; and quantizing and entropy-encoding the LGT coefficient, wherein the permutation layer comprises a permutation matrix obtained by permuting a row of an identity matrix.