公开(公告)号：US11025957B2

公开(公告)日：2021-06-01

申请号：US15886548

申请日：2018-02-01

Applicant: LG Electronics Inc.

Inventor： Moonmo Koo ,  Onur Guleryuz

IPC: H04N19/63 ,  H04N19/60 ,  H04N19/91 ,  H04N19/124 ,  G06F17/14

Abstract: A method for performing a transform by using Layered Givens Transform may include: deriving at least one rotation layer, a first permutation layer and a second permutation layer based on a given transform matrix H and an error parameter; obtaining a Layered Givens Transform (LGT) coefficient based on the rotation layer, the first permutation layer and the second permutation layer; and performing quantization and entropy encoding with respect to the LGT coefficient, the first permutation layer and the second permutation layer may include a permutation matrix obtained by permuting a row of an identity matrix, and the LGT coefficient may be obtained by sequentially applying the first permutation layer, the rotation layer and the second permutation layer respectively.

公开(公告)号：US10390025B2

公开(公告)日：2019-08-20

申请号：US15516270

申请日：2015-06-25

Applicant: LG Electronics Inc.

Inventor： Onur Guleryuz ,  Shunyao Li ,  Sehoon Yea

IPC: H04N19/50 ,  H04N19/172 ,  H04N19/46 ,  H04N19/85 ,  H04N19/117 ,  H04N19/176 ,  H04N19/149 ,  H04N19/82 ,  H04N19/119 ,  H04N19/66

Abstract: A method of encoding a video signal includes selecting a set of base filter kernels from a filter bank; determining a prediction filter parameter based on the set of base filter kernels; performing a filtering of a reference region for a target region based on the prediction filter parameter; and predicting the target region based on the filtered reference region, wherein the prediction filter parameter includes at least one of modulation scalar and partition information.