公开(公告)号：US11184609B2

公开(公告)日：2021-11-23

申请号：US16471071

申请日：2018-01-02

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyun Suk Ko ,  Sung Chang Lim ,  Jung Won Kang ,  Dong San Jun ,  Seung Hyun Cho ,  Jin Ho Lee ,  Ha Hyun Lee ,  Hui Yong Kim ,  Jin Soo Choi

IPC: H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise constructing N MPM lists for a current block, wherein N is equal to or greater than 1, deriving an intra prediction mode of the current block based on the N MPM lists, and performing intra prediction for the current block based on the intra prediction mode.

公开(公告)号：US11128861B2

公开(公告)日：2021-09-21

申请号：US16099639

申请日：2017-06-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyun Suk Ko ,  Jin Ho Lee ,  Sung Chang Lim ,  Jung Won Kang ,  Ha Hyun Lee ,  Dong San Jun ,  Seung Hyun Cho ,  Hui Yong Kim ,  Jin Soo Choi

IPC: H04N19/11 ,  H04N19/96 ,  H04N19/176 ,  H04N19/184 ,  H04N19/159 ,  H04N19/105 ,  H04N19/593

Abstract: The present invention relates to an intra prediction method and apparatus. The image decoding method according to the present invention may comprise decoding information on intra prediction; and generating a prediction block by performing intra prediction for a current block based on the information on intra prediction. The information on intra prediction may include information on an intra prediction mode, and the intra prediction mode may include a curved intra prediction mode.

公开(公告)号：US10911756B2

公开(公告)日：2021-02-02

申请号：US16342310

申请日：2017-10-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY ,  HANBAT NATIONAL UNIVERSITY INDUSTRY—ACADEMIC COOPERATION FOUNDATION

Inventor： Jin Ho Lee ,  Jung Won Kang ,  Hyun Suk Ko ,  Sung Chang Lim ,  Ha Hyun Lee ,  Dong San Jun ,  Seung Hyun Cho ,  Hui Yong Kim ,  Hae Chul Choi ,  Aram Back ,  Jin Soo Choi ,  Jae Gon Kim

IPC: H04N19/46 ,  H04N19/176 ,  H04N19/119 ,  H04N19/105 ,  H04N19/186

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus of the present invention may comprise decoding an indicator indicating whether or not partition information of a current block is derived from partition information of a corresponding block of the current block, obtaining the partition information of the current block based on the decoded indicator, and partitioning the current block based on the obtained partition information.

公开(公告)号：US20150078446A1

公开(公告)日：2015-03-19

申请号：US14387454

申请日：2013-03-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Dong San Jun ,  Jung Won Kang ,  Ha Hyun Lee ,  Youn Hee Kim ,  Soon Heung Jung ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N19/503 ,  H04N19/593

CPC classification number: H04N19/503 ,  H04N19/30 ,  H04N19/33 ,  H04N19/59 ,  H04N19/593

Abstract: The present invention relates to a method and an apparatus for inter-layer intra prediction. The method for inter-layer intra prediction comprises: a step of determining a reference layer for inter-layer intra prediction; a step of generating intra prediction information from the reference layer; and a step of performing inter-layer prediction on the current block based on the intra prediction information. In cases where the same location block of the reference block corresponding to the prediction object frame on a temporal axis is inter predicted in the reference layer, intra prediction information is generated based on the intra predicted same location block from among the previous and post frames of the reference frame.

Abstract translation: 本发明涉及一种层间帧内预测的方法和装置。 层间帧内预测方法包括：确定用于层间帧内预测的参考层的步骤; 从参考层生成帧内预测信息的步骤; 以及基于帧内预测信息对当前块执行层间预测的步骤。 在参考层中对与时间轴上的预测对象帧相对应的参考块的相同位置块进行帧间预测的情况下，基于帧内预测相同位置块生成帧内预测信息， 参考框架。

公开(公告)号：US20150023413A1

公开(公告)日：2015-01-22

申请号：US14383257

申请日：2012-12-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Soon heung Jung ,  Dong San Jun ,  Youn Hee Kim ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N19/172 ,  H04N19/119 ,  H04N19/124

CPC classification number: H04N19/176 ,  H04N19/124 ,  H04N19/146

Abstract: A method of controlling a video bit rate includes splitting the current frame into a plurality of first sub frames, deriving a sub frame goal bit rate for each of the plurality of first sub frames, and deriving a QP value for each of the plurality of first sub frames on the basis of the derived sub frame goal bit rate. According to the method, video coding efficiency may be enhanced.

Abstract translation: 一种控制视频比特率的方法包括将当前帧分成多个第一子帧，为多个第一子帧中的每一个导出子帧目标比特率，并且为多个第一子帧中的每个子帧生成QP值 基于派生子帧目标比特率的子帧。 根据该方法，可以提高视频编码效率。

公开(公告)号：US12225240B2

公开(公告)日：2025-02-11

申请号：US18513906

申请日：2023-11-20

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

Inventor： Sung Chang Lim ,  Jung Won Kang ,  Hyun Suk Ko ,  Jin Ho Lee ,  Dong San Jun ,  Ha Hyun Lee ,  Seung Hyun Cho ,  Hui Yong Kim ,  Jin Soo Choi ,  Yung Lyul Lee ,  Jun Woo Choi

IPC: H04N19/91 ,  H04N19/146 ,  H04N19/149 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44

Abstract: The present invention relates to an image encoding/decoding method and apparatus. An image encoding method according to the present invention may comprise generating a transform block by performing at least one of transform and quantization; grouping at least one coefficient included in the transform block into at least one coefficient group (CG); scanning at least one coefficient included in the coefficient group; and encoding the at least one coefficient.

公开(公告)号：US12120292B2

公开(公告)日：2024-10-15

申请号：US17972894

申请日：2022-10-25

Applicant: Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Jung Won Kang ,  Hyun Suk Ko ,  Sung Chang Lim ,  Jin Ho Lee ,  Dong San Jun ,  Hui Yong Kim ,  Gwang Hoon Park ,  Jin Soo Choi ,  Tae Hyun Kim ,  Dae Young Lee ,  Young Su Heo

IPC: H04N19/105 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176

Abstract: A method and apparatus use a geometric modified image for video encoding/decoding. The encoding method may include: generating a geometric modified reference picture by geometrically modifying a reference picture; generating a prediction block of a current block within an encoding target picture by performing inter prediction by referencing the reference picture or the geometrically modified reference picture; and encoding inter-prediction information of the current block.

公开(公告)号：US12095999B2

公开(公告)日：2024-09-17

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: H04N19/50 ,  H04N19/105 ,  H04N19/117 ,  H04N19/124 ,  H04N19/139 ,  H04N19/51 ,  H04N19/52 ,  H04N19/91

CPC classification number: H04N19/139 ,  H04N19/117 ,  H04N19/124 ,  H04N19/51 ,  H04N19/52 ,  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：US11805256B2

公开(公告)日：2023-10-31

申请号：US16634922

申请日：2018-07-31

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung Chang Lim ,  Hyun Suk Ko ,  Jung Won Kang ,  Jin Ho Lee ,  Ha Hyun Lee ,  Dong San Jun ,  Hui Yong Kim

IPC: H04N19/129 ,  H04N19/176 ,  H04N19/186 ,  H04N19/64

CPC classification number: H04N19/129 ,  H04N19/176 ,  H04N19/186 ,  H04N19/64

Abstract: The present invention relates to an image encoding and decoding method. An image decoding method for the same may include: obtaining transform coefficients of a current block from a bitstream; determining a scanning unit and a scanning order of the current block; and rearranging the transform coefficients of the current block by scanning the same base on the determined scanning unit and scanning order.

公开(公告)号：US11800116B2

公开(公告)日：2023-10-24

申请号：US17591830

申请日：2022-02-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong San Jun ,  Jin Ho Lee ,  Jung Won Kang ,  Hyun Suk Ko ,  Sung Chang Lim ,  Ha Hyun Lee ,  Seung Hyun Cho ,  Hui Yong Kim ,  Jin Soo Choi

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/593 ,  H04N19/13 ,  H04N19/126 ,  H04N19/176 ,  H04N19/50

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/126 ,  H04N19/13 ,  H04N19/176 ,  H04N19/50 ,  H04N19/593

Abstract: An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra prediction mode for a current block, selecting at least one reconstructed sample line neighboring to the current block, constructing a reference sample using at least one reconstructed sample included in the at least one reconstructed sample line, and performing intra prediction for the current block based on the intra prediction mode and the reference sample.