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：US11438589B2

公开(公告)日：2022-09-06

申请号：US17130614

申请日：2020-12-22

申请人： Electronics and Telecommunications Research Institute ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY ,  HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

发明人： 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 Chui Choi ,  Aram Back ,  Jin Soo Choi ,  Jae Gon Kim

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

摘要： 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：US11277612B2

公开(公告)日：2022-03-15

申请号：US17256150

申请日：2019-06-25

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 ,  Ji Youn Jung ,  Yang Woo Kim ,  Jae Gon Kim

IPC分类号： H04N19/124 ,  H04N19/119 ,  H04N19/176

摘要： There is provided an image encoding/decoding method and apparatus. The image decoding method comprises decoding size information of a quantization group from a bitstream, acquiring a delta quantization parameter of a current block on the basis of the size information of the quantization group, and deriving a quantization parameter for the current block on the basis of the delta quantization parameter.

公开(公告)号：US12081774B2

公开(公告)日：2024-09-03

申请号：US17614935

申请日：2020-05-29

申请人： Electronics and Telecommunications Research Institute ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE 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 ,  Ji Hoon Do ,  Yong Uk Yoon

IPC分类号： H04N19/176 ,  H04N19/119 ,  H04N19/18 ,  H04N19/50

CPC分类号： H04N19/176 ,  H04N19/119 ,  H04N19/18 ,  H04N19/50

摘要： Disclosed herein is a video decoding method including determining a zero-out width threshold and a zero-out height threshold for distinguishing between a transform coefficient coding region and a zero-out region of a current block according to a size of the current block, determining the transform coefficient coding region and the zero-out region of the current block according to the zero-out width threshold and the zero-out height threshold, acquiring transform coefficient information of the transform coefficient coding region from a bitstream and determining a level of a transform coefficient of the transform coefficient coding region according to the transform coefficient information, determining a level of a transform coefficient of the zero-out region as 0 without acquiring transform coefficient information, and reconstructing the current block by inversely transforming the transform coefficient of the current block.

公开(公告)号：US12081768B2

公开(公告)日：2024-09-03

申请号：US17611871

申请日：2020-06-19

申请人： Electronics and Telecommunications Research Institute ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE 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 ,  Ji Hoon Do ,  Yong Uk Yoon

IPC分类号： H04N19/14 ,  H04N19/12 ,  H04N19/176 ,  H04N19/60

CPC分类号： H04N19/14 ,  H04N19/12 ,  H04N19/176 ,  H04N19/60

摘要： Disclosed herein are an image encoding/decoding method and apparatus. The image decoding method of the present disclosure may include obtaining maximum transform block size information, deriving a maximum transform block size on the basis of the maximum transform block size information, and, determining ether or not a secondary inverse transform is applied to the current block on the basis of the maximum transform block size and a horizontal size and a vertical size of a current block.

公开(公告)号：US12034977B2

公开(公告)日：2024-07-09

申请号：US17256165

申请日：2019-06-28

申请人： Electronics and Telecommunications Research Institute ,  CHIPS & MEDIA, INC ,  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 ,  Dae Yeon Kim ,  Wook Je Jeong ,  Dong Jin Park ,  Min Yong Jeon ,  Yung Lyul Lee ,  Nam Uk Kim ,  Myung Jun Kim ,  Ji Youn Jung ,  Jae Gon Kim

IPC分类号： H04N19/82 ,  H04N19/107 ,  H04N19/176

CPC分类号： H04N19/82 ,  H04N19/107 ,  H04N19/176

摘要： An image decoding is performed by steps including: determining whether or not to perform filtering on a boundary of a current block; determining a filtering strength on the boundary of the current block, and a number of samples used in filtering; and performing filtering on the boundary of the current block on the basis of the filtering strength and the number of samples used in filtering, where the number of samples used in filtering is determined on the basis of a size of the current block.

公开(公告)号：US12034930B2

公开(公告)日：2024-07-09

申请号：US17589400

申请日：2022-01-31

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 ,  Ji Youn Jung ,  Yang Woo Kim ,  Jae Gon Kim

IPC分类号： H04N19/124 ,  H04N19/119 ,  H04N19/176

CPC分类号： H04N19/124 ,  H04N19/119 ,  H04N19/176

摘要： There is provided an image encoding/decoding method and apparatus. The image decoding method comprises decoding size information of a quantization group from a bitstream, acquiring a delta quantization parameter of a current block on the basis of the size information of the quantization group, and deriving a quantization parameter for the current block on the basis of the delta quantization parameter.

公开(公告)号：US12015778B2

公开(公告)日：2024-06-18

申请号：US17894843

申请日：2022-08-24

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

CPC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：US11818340B2

公开(公告)日：2023-11-14

申请号：US17258124

申请日：2019-07-05

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 ,  Ji Hoon Do ,  Yong Uk Yoon ,  Do Hyeon Park ,  Yung Lyul Lee

IPC分类号： H04N19/105 ,  H04N19/11 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/593 ,  H04N19/119 ,  H04N19/70 ,  H04N19/96

CPC分类号： H04N19/11 ,  H04N19/105 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/593 ,  H04N19/119 ,  H04N19/70 ,  H04N19/96

摘要： There is provided an image encoding/decoding method and apparatus. An image decoding method according to the present invention may comprise reconstructing a most frequent mode (MFM) indicator indicating whether or not an intra prediction mode of a current block is a predetermined intra prediction mode, deriving, on the basis of the MFM indicator, the intra prediction mode of the current block, and generating a prediction block of the current block by performing intra prediction on the current block on the basis of the intra prediction mode.