公开(公告)号：US20230353751A1

公开(公告)日：2023-11-02

申请号：US18346488

申请日：2023-07-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Ha Hyun LEE ,  Dong San JUN ,  Hyun Suk KO ,  Jin Ho LEE ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jin Soo CHOI

IPC: H04N19/139 ,  H04N19/52 ,  H04N19/51 ,  H04N19/117 ,  H04N19/124 ,  H04N19/91

CPC classification number: H04N19/139 ,  H04N19/52 ,  H04N19/51 ,  H04N19/117 ,  H04N19/124 ,  H04N19/91

Abstract: The present invention relates to a method of performing motion compensation by using motion vector prediction. To this end, a method of decoding an image may include: generating multiple motion vector candidate lists according to an inter-prediction direction of a current block; deriving multiple motion vectors for the current block by using the multiple motion vector candidate lists; determining multiple prediction blocks for the current block by using the multiple motion vectors; and obtaining a final prediction block for the current block based on the multiple prediction blocks.

公开(公告)号：US20230308647A1

公开(公告)日：2023-09-28

申请号：US18317785

申请日：2023-05-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Ha Hyun LEE ,  Jin Ho LEE ,  Hui Yong KIM

IPC: H04N19/176 ,  H04N19/96 ,  H04N19/119

CPC classification number: H04N19/119 ,  H04N19/176 ,  H04N19/96

Abstract: There is provided a method and apparatus of encoding/decoding an image. The method comprises decoding information on block partitioning of a current block included in a current picture from a bitstream; determining a partitioning method of the current block on the basis of the information; and partitioning the current block by using the determined partitioning method, wherein the partitioning method is determined on the basis of whether or not the current block includes a predetermined boundary.

公开(公告)号：US20230269372A1

公开(公告)日：2023-08-24

申请号：US18309934

申请日：2023-05-01

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Hyun Suk KO ,  Jin Ho LEE ,  Ha Hyun LEE ,  Dong San JUN ,  Hui Yong KIM

IPC: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/169 ,  H04N19/46 ,  H04N19/96

CPC classification number: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/46 ,  H04N19/96

Abstract: The present invention relates to an image encoding/decoding method. The image decoding method includes splitting a coding tree unit (CTU) into at least one coding unit (CU) according to a block splitting structure and performing CU-based decoding, in which the block partition structure is configured such that at least one of binary tree splitting and ternary tree splitting is performed after quadtree splitting is performed.

公开(公告)号：US20230129266A1

公开(公告)日：2023-04-27

申请号：US18087642

申请日：2022-12-22

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Ha Hyun LEE ,  Jin Ho LEE ,  Hui Yong KIM

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196

Abstract: There is provided a method and apparatus of encoding/decoding an intra prediction mode. The method comprises deriving an intra prediction mode with respect to a current block, constructing a reference sample for the current block on the basis of the derived intra prediction mode, and performing the intra prediction with respect to the current block using the derived intra prediction mode and the constructed reference sample, wherein the intra prediction mode is derived on the basis of a most probable mode (MPM).

公开(公告)号：US20230071970A1

公开(公告)日：2023-03-09

申请号：US17941182

申请日：2022-09-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong San JUN ,  Ha Hyun LEE ,  Jung Won KANG ,  Hyun Suk KO ,  Sung Chang LIM ,  Jin Ho LEE ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jin Soo CHOI

IPC: H04N19/109 ,  H04N19/176 ,  H04N19/91 ,  H04N19/513 ,  H04N19/182 ,  H04N19/132 ,  H04N19/172 ,  H04N19/117 ,  H04N19/174 ,  H04N19/86 ,  H04N19/119

Abstract: An image encoding method and an image decoding method are provided. The image decoding method includes deriving a temporal merge candidate from a co-located block of a current block, generating a merge candidate list of the current block based on the derived temporal merge candidate, and generating a prediction block of the current block based on the generated merge candidate list. The deriving a temporal merge candidate includes scaling a motion vector derived from the co-located block based on a POC difference value between the current block and a reference picture of the current block and a POC difference value between the co-located block and a reference picture of the co-located block, and modifying the scaled motion vector based on motion vector scaling information between a neighboring block of the current block and a co-located block of the neighboring block.

公开(公告)号：US20230015638A1

公开(公告)日：2023-01-19

申请号：US17779478

申请日：2020-11-23

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho LEE ,  Jung Won KANG ,  Soo Woong KIM ,  Gun BANG ,  Ha Hyun LEE ,  Sung Chang LIM

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/119 ,  H04N19/46 ,  H04N19/159 ,  H04N19/186 ,  H04N19/593

Abstract: Disclosed herein are an image encoding/decoding method and apparatus. The image decoding method includes acquiring a partitioning index of a current block from a bitstream, and generating a prediction sample of the current block by weighted-summing a prediction sample of a first subblock of the current block and a prediction sample of a second subblock of the current block based on the partitioning index. The partitioning index indicates a partitioning distance and a partitioning direction included in a predefined table.

公开(公告)号：US20220408085A1

公开(公告)日：2022-12-22

申请号：US17778351

申请日：2020-11-23

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Soo Woong KIM ,  Gun BANG ,  Jin Ho LEE ,  Ha Hyun LEE

IPC: H04N19/117 ,  H04N19/186 ,  H04N19/176 ,  H04N19/70 ,  H04N19/172 ,  H04N19/82

Abstract: The present invention relates to a video decoding method, according to embodiment of the invention, image decoding method comprises, acquiring a reconstructed luma block of a current block, determining whether a cross-component adaptive loop filter is applied to the current block, acquiring a reconstructed chroma block of the current block, to which an adaptive loop filter is applied, when the cross-component adaptive loop filter is applied to the current block and acquiring a final reconstructed chroma block of the current block, to which the cross-component loop filter is applied, using the reconstructed luma block and the reconstructed chroma block, to which the adaptive loop filter is applied.

公开(公告)号：US20220385888A1

公开(公告)日：2022-12-01

申请号：US17761908

申请日：2020-09-21

Applicant: Electronics and Telecommunications Research Institute ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY

Inventor： Jin Ho LEE ,  Jung Won KANG ,  Ha Hyun LEE ,  Sung Chang LIM ,  Jae Gon KIM ,  Ji Hoon DO ,  Do Hyeon PARK ,  Yong Uk YOON

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/186 ,  H04N19/176

Abstract: An image encoding/decoding method and apparatus are disclosed. The method of decoding an image according to the present invention, comprises, generating a first prediction block of a current block, generating a second prediction block of the current block and generating a final prediction sample of the current block using a sample unit weighted sum of the first prediction block and the second prediction block, wherein a weight used for the sample unit weighted sum is determined based on a location of a current luma sample and a geometric prediction mode (GPM) boundary line for partitioning the current block.

公开(公告)号：US20220279171A1

公开(公告)日：2022-09-01

申请号：US17744845

申请日：2022-05-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho LEE ,  Sung Chang LIM ,  Jung Won KANG ,  Hyun Suk KO ,  Dong San JUN ,  Ha Hyun LEE ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jin Soo CHOI

IPC: H04N19/107 ,  H04N19/176 ,  H04N19/117 ,  H04N19/147 ,  H04N19/119 ,  H04N19/11 ,  H04N19/105 ,  H04N19/30 ,  H04N19/91 ,  H04N19/146 ,  H04N19/44 ,  H04N19/126 ,  H04N19/52

Abstract: The present invention relates to an image encoding/decoding method and apparatus. An image decoding method performing intra prediction according to the present invention may comprise dividing a current block into at least one sub-block; deriving an intra prediction mode for the at least one sub-block; constructing a reference sample for the intra prediction; and performing intra prediction for the at least one sub-block based on the derived intra prediction mode.

公开(公告)号：US20220279161A1

公开(公告)日：2022-09-01

申请号：US17608399

申请日：2020-04-29

Applicant: Electronics and Telecommunications Research Institute ,  CHIPS&MEDIA, INC

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Ha Hyun LEE ,  Jin Ho LEE ,  Hui Yong KIM ,  Dae Yeon KIM

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/169 ,  H04N19/119 ,  H04N19/80 ,  H04N19/132

Abstract: Disclosed herein is an image encoding/decoding method. A method of decoding an image includes determining an intra prediction mode of a current block, and generating a prediction block of the current block, by performing prediction based on the intra prediction mode. When the intra prediction mode of the current block is a matrix-based intra prediction (MIP) mode, a length of a reference sample used for intra prediction is derived based on a length of the current block.