公开(公告)号：US11463690B2

公开(公告)日：2022-10-04

申请号：US17314192

申请日：2021-05-07

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  CHIPS & MEDIA, INC ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

发明人： Jin Ho Lee ,  Jung Won Kang ,  Ha Hyun Lee ,  Sung Chang Lim ,  Hui Yong Kim ,  Dae Yeon Kim ,  Yung Lyul Lee

IPC分类号： H04N19/11 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/593

摘要： The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise acquiring transform coefficients distribution information of a neighboring block from a bitstream; direction-adaptively determining an intra prediction mode of a current block to be decoded, according to the transform coefficients distribution information of the neighboring block; and reconstructing the current block, based on the determined intra prediction mode, wherein the direction-adaptively determining includes determining similarity flag information corresponding to the neighboring block, based on the transform coefficients distribution information of the neighboring block.

公开(公告)号：US11457217B2

公开(公告)日：2022-09-27

申请号：US17251423

申请日：2019-06-12

申请人： Electronics and Telecommunications Research Institute ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

发明人： Jin Ho Lee ,  Jung Won Kang ,  Ha Hyun Lee ,  Sung Chang Lim ,  Hui Yong Kim ,  Jae Gon Kim ,  Do Hyeon Park ,  Yong Uk Yoon ,  Yung Lyul Lee

IPC分类号： H04N19/13 ,  H04N19/172 ,  H04N19/184

摘要： There is provided an video encoding/decoding method and apparatus. The video decoding method comprises acquiring a bitstream including a predetermined context element, performing at least one of a context model determination, a probability update, and a probability interval determination on the predetermined syntax element, and arithmetically decoding the predetermined syntax element on the basis of a result of the performance.

公开(公告)号：US12058311B2

公开(公告)日：2024-08-06

申请号：US17420084

申请日：2019-12-27

申请人： Electronics and Telecommunications Research Institute ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY

发明人： Sung Chang Lim ,  Jung Won Kang ,  Ha Hyun Lee ,  Jin Ho Lee ,  Hui Yong Kim ,  Yung Lyul Lee ,  Myung Jun Kim ,  Nam Uk Kim ,  Yang Woo Kim ,  Ji Yeon Jung ,  Jae Gon Kim

IPC分类号： H04N19/82 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

CPC分类号： H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

摘要： An image encoding/decoding method is provided. An image decoding method of the present invention may comprise restoring an intra-prediction mode of a current chroma block, deriving at least one representative value based on a neighboring sample of the current chroma block and a neighboring sample of a corresponding luma block corresponding to the current chroma block in case the intra-prediction mode is a CCLM (Cross-Component Linear Model) mode, deriving a parameter of CCLM by using the at least one representative value, and generating a prediction block of the current chroma block by using the parameter of CCLM.

公开(公告)号：US11930179B2

公开(公告)日：2024-03-12

申请号：US17419142

申请日：2019-12-27

申请人： Electronics and Telecommunications Research Institute ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY ,  CHIPS & MEDIA, INC ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY

发明人： Sung Chang Lim ,  Jung Won Kang ,  Ha Hyun Lee ,  Jin Ho Lee ,  Hui Yong Kim ,  Yung Lyul Lee ,  Ji Yeon Jung ,  Nam Uk Kim ,  Myung Jun Kim ,  Yang Woo Kim ,  Dae Yeon Kim ,  Jae Gon Kim ,  Do Hyeon Park

IPC分类号： H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

CPC分类号： H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

摘要： An image encoding/decoding method is provided. An image decoding method of the present invention may comprise deriving an intra-prediction mode of a current luma block, deriving an intra-prediction mode of a current chroma block based on the intra-prediction mode of the current luma block, generating a prediction block of the current chroma block based on the intra-prediction mode of the current chroma block, and the deriving of an intra-prediction mode of a current chroma block may comprise determining whether or not CCLM (Cross-Component Linear Mode) can be performed for the current chroma block.

公开(公告)号：US11758136B2

公开(公告)日：2023-09-12

申请号：US16302210

申请日：2017-06-23

申请人： Electronics and Telecommunications Research Institute ,  Industry Academy Cooperation Foundation of Sejong University

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

IPC分类号： H04N19/122 ,  H04N19/176 ,  H04N19/70 ,  H04N19/61 ,  H04N19/90 ,  H04N19/107 ,  H04N19/186 ,  H04N19/103 ,  H04N19/132 ,  H04N19/625

CPC分类号： H04N19/122 ,  H04N19/103 ,  H04N19/107 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70 ,  H04N19/90

摘要： The present invention relates to a method and apparatus for encoding and decoding a video image based on transform. The method for decoding a video includes: determining a transform mode of a current block; inverse-transforming residual data of the current block according to the transform mode of the current block; and rearranging the inverse-transformed residual data of the current block according to the transform mode of the current block, wherein the transform mode includes at least one of SDST (Shuffling Discrete Sine Transform), SDCT (Shuffling Discrete cosine Transform), DST (Discrete Sine Transform) or DCT (Discrete Cosine Transform).

公开(公告)号：US11044471B2

公开(公告)日：2021-06-22

申请号：US16633340

申请日：2018-07-27

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  CHIPS&MEDIA,INC ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

发明人： Jin Ho Lee ,  Jung Won Kang ,  Ha Hyun Lee ,  Sung Chang Lim ,  Hui Yong Kim ,  Dae Yeon Kim ,  Yung Lyul Lee

IPC分类号： H04N19/30 ,  H04N19/11 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/593

摘要： The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise acquiring transform coefficients distribution information of a neighboring block from a bitstream; direction-adaptively determining an intra prediction mode of a current block to be decoded, according to the transform coefficients distribution information of the neighboring block; and reconstructing the current block, based on the determined intra prediction mode, wherein the direction-adaptively determining includes determining similarity flag information corresponding to the neighboring block, based on the transform coefficients distribution information of the neighboring block.

公开(公告)号：US11838502B2

公开(公告)日：2023-12-05

申请号：US17885349

申请日：2022-08-10

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  CHIPS & MEDIA, INC ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

发明人： Jin Ho Lee ,  Jung Won Kang ,  Ha Hyun Lee ,  Sung Chang Lim ,  Hui Yong Kim ,  Dae Yeon Kim ,  Yung Lyul Lee

IPC分类号： H04N19/11 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/593

CPC分类号： H04N19/11 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/593

摘要： The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise acquiring transform coefficients distribution information of a neighboring block from a bitstream; direction-adaptively determining an intra prediction mode of a current block to be decoded, according to the transform coefficients distribution information of the neighboring block; and reconstructing the current block, based on the determined intra prediction mode, wherein the direction-adaptively determining includes determining similarity flag information corresponding to the neighboring block, based on the transform coefficients distribution information of the neighboring block.

公开(公告)号：US12088809B2

公开(公告)日：2024-09-10

申请号：US17419204

申请日：2019-12-27

申请人： Electronics and Telecommunications Research Institute ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

发明人： Jin Ho Lee ,  Jung Won Kang ,  Ha Hyun Lee ,  Sung Chang Lim ,  Hui Yong Kim ,  Jae Gon Kim ,  Do Hyeon Park ,  Yung Lyul Lee

IPC分类号： H04N19/105 ,  H04N19/119 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176

CPC分类号： H04N19/13 ,  H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

摘要： Disclosed herein is an image decoding method. The method of decoding an image comprises obtaining prediction information and residual signal information for a current block from a bitstream and reconstructing, based on the obtained prediction information and the residual signal information, the current block, wherein the prediction information is obtained through entropy decoding, and wherein a context model used for the entropy decoding of the prediction information is determined based on a prediction mode of a neighboring block of the current block.

公开(公告)号：US12069300B2

公开(公告)日：2024-08-20

申请号：US18468512

申请日：2023-09-15

申请人： Electronics and Telecommunications Research Institute ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY ,  CHIPS&MEDIA, INC ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY

发明人： Sung Chang Lim ,  Jung Won Kang ,  Ha Hyun Lee ,  Jin Ho Lee ,  Hui Yong Kim ,  Yung Lyul Lee ,  Ji Yeon Jung ,  Nam Uk Kim ,  Myung Jun Kim ,  Yang Woo Kim ,  Dae Yeon Kim ,  Jae Gon Kim

IPC分类号： H04N7/12 ,  G06T9/00 ,  H04N19/107 ,  H04N19/127 ,  H04N19/159 ,  H04N19/176 ,  H04N19/189 ,  H04N19/196 ,  H04N19/503 ,  H04N19/593 ,  H04N19/132

CPC分类号： H04N19/593 ,  G06T9/004 ,  H04N19/107 ,  H04N19/127 ,  H04N19/159 ,  H04N19/176 ,  H04N19/189 ,  H04N19/196 ,  H04N19/503 ,  H04N19/132

摘要： Disclosed herein is a method of decoding an image. The method includes generating an inter prediction block by performing inter prediction with respect to a current block, generating an intra prediction block by performing intra prediction with respect to the current block, determining a first weight and a second weight, and generating a final prediction block by respectively applying the first weight and the second weight to the inter prediction block and the intra prediction block. The generating of the intra prediction block includes generating the intra prediction block using a predefined intra prediction mode.

公开(公告)号：US11863798B2

公开(公告)日：2024-01-02

申请号：US16308208

申请日：2017-07-10

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

发明人： 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分类号： H04N19/91 ,  H04N19/149 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/182 ,  H04N19/146

CPC分类号： H04N19/91 ,  H04N19/146 ,  H04N19/149 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44

摘要： 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.