公开(公告)号：US20180146195A1

公开(公告)日：2018-05-24

申请号：US15577029

申请日：2016-05-26

申请人： LG Electronics Inc. ,  University of Southern California

发明人： Moonmo KOO ,  Sehoon YEA ,  Bumshik LEE ,  Amir SAID ,  Hilmi Enes EGILMEZ ,  Antonio ORTEGA

IPC分类号： H04N19/122 ,  H04N19/625 ,  H04N19/61 ,  H04N19/176

摘要： The present invention provides a method for decoding a video signal using an adaptive separable graph-based transform, comprising the steps of: receiving a transform index for a target block from the video signal, wherein the transform index indicates a graph-based transform to be applied to the target block; deriving a graph-based transform kernel corresponding to the transform index; and decoding the target block based on the graph-based transform kernel.

公开(公告)号：US20170359584A1

公开(公告)日：2017-12-14

申请号：US15520968

申请日：2015-10-21

申请人： LG ELECTRONICS INC.

发明人： Amir SAID ,  Yung-Hsuan CHAO ,  Hilmi Enes EGILMEZ

IPC分类号： H04N19/159 ,  H04N19/105 ,  H04N19/503 ,  H04N19/44 ,  H04N19/61 ,  H04N19/18

摘要： The present invention provides a method for performing a graph-based prediction using a graph signal including obtaining a context signal; generating a graph signal based on a graph parameter set; obtaining a graph-based transform matrix based on the graph signal, wherein the graph-based transform matrix includes an eigenvector; obtaining a prediction vector using an optimal transform vector calculated through an optimization function; and generating a prediction signal using the prediction vector, where the optimization function has the context signal, an eigenvalue of a graph Laplacian matrix and the eigenvector as a variable.

公开(公告)号：US20170339422A1

公开(公告)日：2017-11-23

申请号：US15526897

申请日：2015-11-13

申请人： LG ELECTRONICS INC.

发明人： Amir SAID ,  Yung-Hsuan CHAO ,  Hilmi Enes EGILMEZ

IPC分类号： H04N19/44 ,  H04N19/117 ,  H04N19/124 ,  H04N19/13

摘要： The present invention provides a method for decoding a video signal using a graph-based transform including receiving a generalized graph signal including a graph parameter set; obtaining a graph-based transform kernel of a transform unit based on the graph parameter set and a predetermined penalty function; and decoding the transform unit using the graph-based transform kernel.

公开(公告)号：US20220303537A1

公开(公告)日：2022-09-22

申请号：US17833335

申请日：2022-06-06

申请人： LG Electronics Inc.

发明人： Hilmi Enes EGILMEZ ,  Jana Ehmann ,  Onur G. GULERYUZ

IPC分类号： H04N19/12 ,  H04N19/159 ,  H04N19/18 ,  H04N19/61

摘要： The present invention, with respect to a method of processing video data, provides a method of processing video data, provides a method characterized by comprising the steps of: performing a clustering for the video data; generating at least one data cluster as a result of the clustering; generating at least one Graph laplacian matrix corresponding to the at least one data cluster; performing conversion optimization on the basis of multiple graph-based models, wherein the multiple graph-based models respectively include at least one graph laplacian matrix; and generating an optimized conversion matrix according to the results of performing the conversion optimization.

公开(公告)号：US20170318311A1

公开(公告)日：2017-11-02

申请号：US15521410

申请日：2015-10-23

申请人： LG ELECTRONICS INC.

发明人： Amir SAID ,  Hilmi Enes EGILMEZ

IPC分类号： H04N19/60

CPC分类号： H04N19/60 ,  H04N19/103 ,  H04N19/107 ,  H04N19/12 ,  H04N19/124 ,  H04N19/14 ,  H04N19/176

摘要： There is provided a method for decoding a video signal using a graph-based transform, the method comprising: receiving a template index for a target unit from the video signal, wherein the template index indicates a graph-based transform template to be applied to the target unit; deriving a graph-based transform matrix for the target unit corresponding to the template index; and decoding the target unit based on the graph-based transform matrix.

公开(公告)号：US20170280140A1

公开(公告)日：2017-09-28

申请号：US15512428

申请日：2015-07-14

申请人： LG ELECTRONICS INC.

发明人： Amir SAID ,  Hilmi Enes EGILMEZ ,  Yung-Hsuan CHAO

IPC分类号： H04N19/134 ,  H04N19/176 ,  H04N19/60 ,  H04N19/124 ,  H04N19/122

CPC分类号： H04N19/134 ,  H04N19/122 ,  H04N19/124 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/60 ,  H04N19/649

摘要： Disclosed herein is a method of performing an adaptive video coding, comprising: determining transform subsets including a group index and linear transforms with dimensions M×M and N×N, wherein the linear transforms correspond to at least one of a null transform and predefined transforms; selecting an optimal transform subset for a transform unit from the determined transform subsets, wherein each of rows and columns of the transform unit corresponds to different linear transform; and encoding the optimal transform subset.

公开(公告)号：US20170257579A1

公开(公告)日：2017-09-07

申请号：US15514305

申请日：2015-06-24

申请人： LG Electronics Inc.

发明人： Amir SAID ,  Hilmi Enes EGILMEZ

IPC分类号： H04N5/357 ,  H04N5/217 ,  H04N19/593 ,  G06T9/00 ,  H04N19/14 ,  G06K9/36 ,  G06T9/20

CPC分类号： H04N5/357 ,  G06K9/36 ,  G06T9/00 ,  G06T9/008 ,  G06T9/20 ,  H04N5/217 ,  H04N19/14 ,  H04N19/593

摘要： Disclosed herein is a method of processing a graph-based signal using a geometric primitive, comprising: specifying the geometric primitive to be used for calculating an edge weight; obtaining a parameter for each of the geometric primitive; calculating an edge weight for each of edges within the image based on the parameter; and encoding the image based on the edge weight.