公开(公告)号：US12101483B2

公开(公告)日：2024-09-24

申请号：US18087577

申请日：2022-12-22

申请人： Electronics and Telecommunications Research Institute ,  CHIPS&MEDIA, INC

发明人： Sung Chang Lim ,  Jung Won Kang ,  Ha Hyun Lee ,  Jin Ho Lee ,  Hui Yong Kim ,  Dae Yeon Kim ,  Wook Je Jeong ,  Hyun Gyu Kim

IPC分类号： H04N19/13 ,  H04N19/176 ,  H04N19/70

CPC分类号： H04N19/13 ,  H04N19/176 ,  H04N19/70

摘要： An image decoding method is disclosed in the present specification. A method of decoding an image, the method may comprises determining whether to perform a context update for a first syntax element of a current block, updating, on the basis of the determination, a context for entropy decoding of the first syntax element and generating, on the basis of the updated context, a bin for the first syntax element, and wherein whether to perform the context update is determined on the basis of the number of pre-decoded predetermined syntax elements for the current block.

公开(公告)号：US12101476B2

公开(公告)日：2024-09-24

申请号：US17778351

申请日：2020-11-23

申请人： Electronics and Telecommunications Research Institute

发明人： Sung Chang Lim ,  Jung Won Kang ,  Soo Woong Kim ,  Gun Bang ,  Jin Ho Lee ,  Ha Hyun Lee

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

CPC分类号： H04N19/117 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/82

摘要： 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：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：US12075090B2

公开(公告)日：2024-08-27

申请号：US18164097

申请日：2023-02-03

申请人： Electronics and Telecommunications Research Institute

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

IPC分类号： H04N19/117 ,  H04N19/105 ,  H04N19/136 ,  H04N19/157 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593 ,  H04N19/82 ,  H04N19/147 ,  H04N19/182

CPC分类号： H04N19/593 ,  H04N19/105 ,  H04N19/117 ,  H04N19/136 ,  H04N19/157 ,  H04N19/176 ,  H04N19/44 ,  H04N19/82 ,  H04N19/147 ,  H04N19/182

摘要： Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.

公开(公告)号：US12041227B2

公开(公告)日：2024-07-16

申请号：US17616083

申请日：2020-09-23

申请人： Electronics and Telecommunications Research Institute ,  RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

发明人： Jung Won Kang ,  Ha Hyun Lee ,  Sung Chang Lim ,  Jin Ho Lee ,  Byeung Woo Jeon ,  Jee Yoon Park

IPC分类号： H04N19/107 ,  H04N19/132 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/503 ,  H04N19/593

CPC分类号： H04N19/107 ,  H04N19/132 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/503 ,  H04N19/593

摘要： Disclosed herein is an image encoding/decoding method and apparatus. The image decoding method includes deriving an intra prediction value by performing intra prediction with respect to a current block, deriving an inter prediction value by performing inter prediction with respect to the current block, deriving a combined inter intra prediction (CIIP) value by weighting the intra prediction value and the inter prediction value, and generating a reconstructed block of the current block using the CIIP value. The intra prediction is performed in a Planar mode.

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：US20240155140A1

公开(公告)日：2024-05-09

申请号：US18417415

申请日：2024-01-19

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 ,  H04N19/124 ,  H04N19/13 ,  H04N19/169 ,  H04N19/182 ,  H04N19/30 ,  H04N19/31 ,  H04N19/46 ,  H04N19/52 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/91

CPC分类号： H04N19/187 ,  H04N19/124 ,  H04N19/13 ,  H04N19/182 ,  H04N19/188 ,  H04N19/30 ,  H04N19/31 ,  H04N19/46 ,  H04N19/52 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/91 ,  H04N19/33

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.