公开(公告)号：US11212526B2

公开(公告)日：2021-12-28

申请号：US16691203

申请日：2019-11-21

申请人： Electronics and Telecommunications Research Institute

发明人： Jin Ho Lee ,  Jung Won Kang ,  Ha Hyun Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC分类号： H04N19/117 ,  H04N19/105 ,  H04N19/124 ,  H04N19/176 ,  H04N19/30 ,  H04N19/14 ,  H04N19/80 ,  H04N19/13 ,  H04N19/159 ,  H04N19/51 ,  H04N19/61 ,  H04N19/172

摘要： A video decoding method according to an embodiment of the present invention may include determining a type of a filter to be applied to a first-layer picture which a second-layer picture as a decoding target refers to; determining a filtering target of the first-layer picture to which the filter is applied; filtering the filtering target based on the type of the filter; and adding the filtered first-layer picture to a second-layer reference picture list. Accordingly, the video decoding method and an apparatus using the same may reduce a prediction error in an upper layer and enhance encoding efficiency.

公开(公告)号：US11082686B2

公开(公告)日：2021-08-03

申请号：US15897512

申请日：2018-02-15

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

发明人： Se Yoon Jeong ,  Hui Yong Kim ,  Sung Chang Lim ,  Jin Ho Lee ,  Ha Hyun Lee ,  Jong Ho Kim ,  Jin Soo Choi ,  Jin Woong Kim ,  Chie Teuk Ahn ,  Gwang Hoon Park ,  Kyung Yong Kim ,  Han Soo Lee ,  Tae Ryong Kim

IPC分类号： H04N19/10 ,  H04N19/105 ,  H04N19/136 ,  H04N19/196 ,  H04N19/61 ,  H04N19/46

摘要： According to one embodiment of the present invention, a video information encoding method comprises: a step of predicting information of the current coding unit to generate prediction information; and a step of determining whether the information of the current coding unit coincides with the prediction information. If the information of the current coding unit coincides with the prediction information, a flag indicating that the information of the current coding unit coincides with the prediction information is encoded and transmitted. If the information of the current coding unit does not coincide with the prediction information, a flag indicating that the information of the current coding unit does not coincide with the prediction information is encoded and transmitted and the information of the current coding unit is encoded and transmitted. In the step of generating prediction information, the prediction information may be generated using the information on the coding unit adjacent to the current coding unit.

公开(公告)号：US20210136393A1

公开(公告)日：2021-05-06

申请号：US17144409

申请日：2021-01-08

申请人： Electronics and Telecommunications Research Institute

发明人： Jung Won Kang ,  Ha Hyun Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC分类号： H04N19/187 ,  H04N19/70 ,  H04N19/61 ,  H04N19/30 ,  H04N19/31 ,  H04N19/46 ,  H04N19/169 ,  H04N19/124 ,  H04N19/13 ,  H04N19/52 ,  H04N19/593 ,  H04N19/80 ,  H04N19/91 ,  H04N19/182

摘要： The present invention relates to an image information decoding method. The decoding method includes receiving a bit stream including a Network Abstraction Layer (NAL) unit that includes information related to encoded image, and parsing a NAL unit header of the NAL unit. The NAL unit header may not include 1 bit flag information that represents whether a picture is a non-reference picture or a reference picture in the entire bit stream during encoding.

公开(公告)号：US10986368B2

公开(公告)日：2021-04-20

申请号：US16546930

申请日：2019-08-21

申请人： Electronics and Telecommunications Research Institute

发明人： Jin Ho Lee ,  Hui Yong Kim ,  Sung Chang Lim ,  Jin Soo Choi ,  Jin Woong Kim

IPC分类号： H04N19/82 ,  H04N19/593 ,  H04N19/117 ,  H04N19/157 ,  H04N19/182 ,  H04N19/105 ,  H04N19/159 ,  H04N19/11 ,  H04N19/122 ,  H04N19/137 ,  H04N19/44 ,  H04N19/136 ,  H04N19/80 ,  H04N19/176 ,  H04N19/96

摘要： According to the present invention, an image encoding/decoding method comprises the steps of: performing an intra prediction on a current block so as to generate a prediction block; performing filtering on a filtering target pixel in the prediction block on the basis of the intra prediction mode of the current block so as to generate a final prediction block; and generating a reconstructed block on the basis of a reconstructed differential block corresponding to the current block and on the final prediction block. According to the present invention, image encoding/decoding efficiency can be improved.

公开(公告)号：US10986348B2

公开(公告)日：2021-04-20

申请号：US16696319

申请日：2019-11-26

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

发明人： Hui Yong Kim ,  Gwang Hoon Park ,  Kyung Yong Kim ,  Sung Chang Lim ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC分类号： H04N19/159 ,  H04N19/105 ,  H04N19/52 ,  H04N19/139 ,  H04N19/176 ,  H04N19/109 ,  H04N19/117 ,  H04N19/124 ,  H04N19/13 ,  H04N19/15 ,  H04N19/61

摘要： An inter-prediction method according to the present invention comprises the steps of: deriving motion information of a current block; and generating a prediction block for the current block on the basis of the derived motion information. According to the present invention, computational complexity can be reduced and encoding efficiency can be improved.

公开(公告)号：US10939098B2

公开(公告)日：2021-03-02

申请号：US16664731

申请日：2019-10-25

申请人： Electronics and Telecommunications Research Institute

发明人： Ha Hyun Lee ,  Hui Yong Kim ,  Sung Chang Lim ,  Jong Ho Kim ,  Jin Ho Lee ,  Se Yoon Jeong ,  Suk Hee Cho ,  Jin Soo Choi ,  Jin Woong Kim ,  Chie Teuk Ahn

IPC分类号： H04N19/70 ,  H04N19/169 ,  H04N19/107 ,  H04N19/593 ,  H04N19/176 ,  H04N19/196 ,  H04N19/13 ,  H04N19/61 ,  H04N19/157 ,  H04N19/11 ,  H04N19/50 ,  H04N19/137 ,  H04N19/513 ,  H04N19/105 ,  H04N19/109 ,  H04N19/159 ,  H04N19/52 ,  H04N19/91

摘要： Disclosed herein is an intra prediction method including: deriving neighbor prediction mode information from a left neighbor prediction mode and an upper neighbor prediction mode; deriving an intra prediction mode for a decoding target unit by using the derived neighbor prediction mode information; and performing intra prediction on the decoding target unit based on the intra prediction mode. According to exemplary embodiments of the present invention, image encoding/decoding efficiency can be improved.

公开(公告)号：US10924752B2

公开(公告)日：2021-02-16

申请号：US16509299

申请日：2019-07-11

申请人： Electronics and Telecommunications Research Institute

发明人： Ha Hyun Lee ,  Jin Ho Lee ,  Jung Won Kang ,  Jin Soo Choi ,  Jin Woong Kim

IPC分类号： H04N19/31 ,  H04N19/44 ,  H04N19/51 ,  H04N19/70 ,  H04N19/105 ,  H04N19/157 ,  H04N19/172 ,  H04N19/184 ,  H04N19/187 ,  H04N19/463

摘要： The present invention relates to a method for predicting an inter-layer of an image having a plurality of layers including at least one temporal sub-layer. The method according to present invention comprises the steps of: acquiring information on a temporal sub-layer for inter-layer prediction; inducing a reference picture used for predicting an inter-layer of a current picture on the basis of the information on the temporal sub-layer; and predicting the inter-layer of the current picture on the basis of the reference picture.

公开(公告)号：US10917645B2

公开(公告)日：2021-02-09

申请号：US15337426

申请日：2016-10-28

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

发明人： Hui Yong Kim ,  Gwang Hoon Park ,  Kyung Yong Kim ,  Sung Chang Lim ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC分类号： H04N19/159 ,  H04N19/105 ,  H04N19/52 ,  H04N19/139 ,  H04N19/176 ,  H04N19/109 ,  H04N19/117 ,  H04N19/124 ,  H04N19/13 ,  H04N19/15 ,  H04N19/61

摘要： An inter-prediction method according to the present invention comprises the steps of: deriving motion information of a current block; and generating a prediction block for the current block on the basis of the derived motion information. According to the present invention, computational complexity can be reduced and encoding efficiency can be improved.

公开(公告)号：US20210006816A1

公开(公告)日：2021-01-07

申请号：US17028678

申请日：2020-09-22

申请人： Electronics and Telecommunications Research Institute

发明人： Hui Yong Kim ,  Jin Ho Lee ,  Sung Chang Lim ,  Jin Soo Choi ,  Jin Woong Kim

IPC分类号： H04N19/51 ,  H04N19/196 ,  H04N19/82 ,  H04N19/513 ,  H04N19/593 ,  H04N19/105 ,  H04N19/182 ,  H04N19/42 ,  H04N19/52

摘要： An image decoding method according to the present invention includes reconstructing a residual block by inverse-quantizing and inverse-transforming an entropy-decoded residual block, generating a prediction block by performing intra prediction on a current block, and reconstructing an picture by adding the reconstructed residual block to the prediction block, wherein generating the prediction block includes generating a final prediction value of a prediction target pixel included in the current block based on a first prediction value of the prediction target pixel and a final correction value calculated by performing an arithmetic right shift on a two's complementary integer representation for an initial correction value of the prediction target pixel by a binary digit of 1. Accordingly, upon image encoding/decoding, computation complexity may be reduced.

公开(公告)号：US10827177B2

公开(公告)日：2020-11-03

申请号：US16413870

申请日：2019-05-16

申请人： Electronics and Telecommunications Research Institute ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

发明人： Hui Yong Kim ,  Sung Chang Lim ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim ,  Gwang Hoon Park ,  Kyung Yong Kim

IPC分类号： G06K9/00 ,  H04N19/129 ,  H04N19/176 ,  H04N19/70 ,  H04N19/122 ,  H04N19/159 ,  H04N19/119 ,  H04N19/136 ,  H04N19/61 ,  H04N19/593 ,  H04N19/625 ,  H04N19/124 ,  H04N19/157 ,  H04N19/44

摘要： A method and a device for encoding/decoding images are disclosed. The method for encoding images comprises the steps of: deriving a scan type of a residual signal for a current block according to whether or not the current block is a transform skip block; and applying the scan type to the residual signal for the current block, wherein the transform skip block is a block to which transform for the current block is not applied and is specified on the basis of information indicating whether or not transform for the current block is to be applied.