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441.发明申请公开(公告)号：US20220182662A1
公开(公告)日：2022-06-09
申请号：US17438333
申请日：2020-03-11
Inventor： Jung Won KANG , Ha Hyun LEE , Sung Chang LIM , Jin Ho LEE , Hui Yong KIM
IPC: H04N19/593 , H04N19/159 , H04N19/176 , H04N19/12 , H04N19/119 , H04N19/186 , H04N19/105 , H04N19/423 , H04N19/132 , H04N19/169 , H04N19/503
Abstract: An image encoding/decoding method and apparatus are disclosed. The image decoding method includes acquiring prediction mode information of a current block from a bitstream, deriving a prediction mode of the current block using the prediction mode information of the current block, acquiring information indicating whether a residual signal of a transform block for the current block is present based on at least one of information on partitioning of the current block or the prediction mode of the current block, and reconstructing the current block based on the information indicating whether the residual signal of the transform block is present.
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442.发明申请公开(公告)号：US20220174286A1
公开(公告)日：2022-06-02
申请号：US17436976
申请日：2020-03-06
Inventor： Ha Hyun LEE , Jung Won KANG , Sung Chang LIM , Jin Ho LEE , Hui Yong KIM
IPC: H04N19/137 , H04N19/105 , H04N19/157 , H04N19/176
Abstract: Disclosed herein is an image encoding/decoding method and apparatus. The image decoding method according to the present invention includes obtaining symmetric motion vector difference mode availability information from a bitstream, obtaining first prediction direction's zero motion vector difference information from the bitstream, obtaining symmetric motion vector difference mode information of a current block from the bitstream on the basis of the symmetric motion vector difference mode availability information and the first prediction direction's zero motion vector difference information, obtaining first prediction direction's reference picture index information, second prediction direction's reference picture index information and a first prediction direction's motion vector difference value on the basis of the symmetric motion vector difference mode information, and generating a prediction block of the current block by using at least one of the first prediction direction's reference picture index information, the second prediction direction's reference picture index information and the first prediction direction's motion vector difference value.
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公开(公告)号：US20220159271A1
公开(公告)日：2022-05-19
申请号：US17591830
申请日：2022-02-03
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
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.
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公开(公告)号：US20220159244A1
公开(公告)日：2022-05-19
申请号：US17591089
申请日：2022-02-02
Applicant: Electronics and Telecommunications Research Institute , University-Industry Cooperation Group of Kyung Hee University
Inventor： Hui Yong KIM , Gwang Hoon PARK , Kyung Yong KIM , Sang Min KIM , Sung Chang LIM , Jin Ho LEE , Jin Soo CHOI , Jin Woong KIM
IPC: H04N19/105 , H04N19/136 , H04N19/176 , H04N19/503 , H04N19/159 , H04N19/513 , H04N19/139 , H04N19/103 , H04N19/52
Abstract: The present invention relates to a method and apparatus for setting a reference picture index of a temporal merging candidate. An inter-picture prediction method using a temporal merging candidate can include the steps of: determining a reference picture index for a current block; and inducing a temporal merging candidate block of the current block and calculating a temporal merging candidate from the temporal merging candidate block, wherein the reference picture index of the temporal merging candidate can be calculated regardless of whether a block other than the current block is decoded. Accordingly, a video processing speed can be increased and video processing complexity can be reduced.
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公开(公告)号：US20220150499A1
公开(公告)日：2022-05-12
申请号：US17580810
申请日：2022-01-21
Inventor： Sung Chang LIM , Hui Yong KIM , Se Yoon JEONG , Suk Hee CHO , Jong Ho KIM , Ha Hyun LEE , Jin Ho LEE , Jin Soo CHOI , Jin Woong KIM , Chie Teuk AHN
IPC: H04N19/124 , H04N19/196 , H04N19/463 , H04N19/176 , H04N19/70 , H04N19/119 , H04N19/14 , H04N19/33
Abstract: A method for decoding an image, the method including receiving a bitstream including image information, decoding base block size information on a size of a base block, and a residual quantization parameter of a decoding object unit, from the bitstream, deriving a predicted quantization parameter of the decoding object unit based on the base block size information, deriving a quantization parameter of the decoding object unit based on the predicted quantization parameter and the residual quantization parameter, and decoding the decoding object unit based on the quantization parameter of the decoding object unit.
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Patent Agency Ranking
公开(公告)号：US20220124333A1
公开(公告)日：2022-04-21
申请号：US17565976
申请日：2021-12-30
Inventor： Sung Chang LIM , Hui Yong KIM , Jin Ho LEE , Jin Soo CHOI , Jin Woong KIM
IPC: H04N19/126 , H04N19/159 , H04N19/61 , H04N19/196 , H04N19/70 , H04N19/50 , H04N19/463
Abstract: The present invention relates to a method for encoding and decoding a quantized matrix and an apparatus using same, the method for encoding a quantized matrix according to the present invention comprising the steps of: determining a quantization matrix to be used for quantization and quantizing; determining the prediction method used for the quantization of the quantization matrix; and encoding quantization matrix information on the basis of the determined prediction method, wherein the prediction method can be either a prediction method between coefficients in the quantization matrix or a duplicate of the quantization matrix.
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公开(公告)号：US20220070475A1
公开(公告)日：2022-03-03
申请号：US17415505
申请日：2019-12-18
Applicant: Electronics and Telecommunications Research Institute , INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
Inventor： 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: H04N19/176 , H04N19/51 , H04N19/119 , H04N19/105
Abstract: An image encoding/decoding method is provided. An image decoding method of the present invention may comprise constructing a motion information list for a current block, reconstructing a first index for a first triangular block within the current block and a second index for a second triangular block within the current block, and predicting the first triangular block and the second triangular block, based on the first index, the second index, and the motion information list.
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448.发明申请公开(公告)号：US20220070463A1
公开(公告)日：2022-03-03
申请号：US17419204
申请日：2019-12-27
Applicant: Electronics and Telecommunications Research Institute , lNDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY , INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
Inventor： 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: H04N19/13 , H04N19/176 , H04N19/159 , H04N19/105 , H04N19/119
Abstract: 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.
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公开(公告)号：US20220070446A1
公开(公告)日：2022-03-03
申请号：US17523025
申请日：2021-11-10
Inventor： Jin Ho LEE , Hyun Suk KO , Jung Won KANG , Sung Chang LIM , Ha Hyun LEE , Dong San JUN , Seung Hyun CHO , Hui Yong KIM , Jin Soo CHOI
IPC: H04N19/105 , H04N19/176 , H04N19/11 , H04N19/119 , H04N19/186 , H04N19/80 , H04N19/91 , H04N19/593 , H04N19/117 , H04N19/51 , H04N19/159 , H04N19/70 , H04N19/96 , H04N19/172
Abstract: An image encoding/decoding method and apparatus for predicting a second color component block using a first color component block are provided. An image decoding method of the present invention comprises deriving a prediction parameter using the first color component block, and predicting the second color component block using the derived prediction parameter.
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公开(公告)号：US20220060714A1
公开(公告)日：2022-02-24
申请号：US17419220
申请日：2019-12-27
Applicant: Electronics and Telecommunications Research Institute , HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
Inventor： Ha Hyun LEE , Jung Won KANG , Sung Chang LIM , Jin Ho LEE , Hui Yong KIM , Hae Chul CHOI , Dae Hyeok GWON , Jae Ryun CHOI
IPC: H04N19/137 , H04N19/105 , H04N19/159 , H04N19/176
Abstract: Disclosed herein is a method of decoding an image. The method includes determining a prediction mode of a current block as a merge mode with motion vector difference (MMVD), deriving a merge candidate list of the current block, deriving a motion vector predictor of the current block using the merge candidate list, deriving a motion vector difference of the current block, and deriving a motion vector of the current block using the motion vector predictor and the motion vector difference. Only some of candidates in the merge candidate list are used to derive the motion vector predictor.
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