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公开(公告)号：US20240323431A1
公开(公告)日：2024-09-26
申请号：US18734611
申请日：2024-06-05
发明人： Sung Chang LIM , Jung Won KANG , Hyun Suk KO , Dong San JUN , Jin Ho LEE , Ha Hyun LEE , Hui Yong KIM
IPC分类号： H04N19/523 , H04N19/124 , H04N19/13 , H04N19/176
CPC分类号： H04N19/523 , H04N19/176 , H04N19/124 , H04N19/13
摘要： Disclosed is an image encoding method. The method includes deriving a motion refinement candidate from among motion information of spatial neighboring blocks, motion information of a temporal neighboring blocks, predefined motion information, and motion information that most frequently occurs in a reference picture, performing a motion information refinement on the derived motion refinement candidate, and generating a prediction block of a current block by using the motion refinement candidate having undergone the motion information refinement.
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2.发明公开公开(公告)号：US20240283964A1
公开(公告)日：2024-08-22
申请号：US18641259
申请日：2024-04-19
发明人： Ha Hyun LEE , Sung Chang LIM , Jung Won KANG , Jin Ho LEE , Hui Yong KIM
IPC分类号： H04N19/513 , H04N19/56 , H04N19/91
CPC分类号： H04N19/513 , H04N19/56 , H04N19/91
摘要： The present invention is about an image encoding/decoding method and apparatus. According to present invention, a method of decoding an image, the method comprising, deriving an initial motion vector of a current block; deriving a refined motion vector by using the initial motion vector, and generating a prediction block of the current block by using the refined motion vector.
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3.发明公开公开(公告)号：US20230353776A1
公开(公告)日：2023-11-02
申请号：US18346732
申请日：2023-07-03
发明人： Ha Hyun LEE , Jung Won KANG , Hyun Suk KO , Sung Chang LIM , Jin Ho LEE , Dong San JUN , Seung Hyun CHO , Hui Yong KIM , Jin Soo CHOI
IPC分类号： H04N19/513 , H04N19/105 , H04N19/139 , H04N19/176 , H04N19/537
CPC分类号： H04N19/521 , H04N19/105 , H04N19/139 , H04N19/176 , H04N19/537
摘要： The present invention relates to a method for encoding and decoding an image. The method for decoding an image includes: deriving an initial motion vector from a merge candidate list of a current block; deriving a refined motion vector using the initial motion vector; and generating a prediction block of the current block using the refined motion vector.
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4.发明申请公开(公告)号：US20200186800A1
公开(公告)日：2020-06-11
申请号：US16794054
申请日：2020-02-18
发明人： Sung Chang LIM , Hui Yong KIM , Se Yoon JEONG , Jong Ho KIM , Ha Hyun LEE , Jin Ho LEE , Jin Soo CHOI , Jin Woong KIM
IPC分类号： H04N19/124 , H04N19/61 , H04N19/43 , H04N19/159 , H04N19/15 , H04N19/13 , H04N19/117 , H04N19/105 , H04N19/46 , H04N19/122 , H04N19/157 , H04N19/186 , H04N19/463
摘要： Disclosed are a method for determining a color difference component quantization parameter and a device using the method. Method for decoding an image can comprise the steps of: decoding a color difference component quantization parameter offset on the basis of size information of a transform unit; and calculating a color difference component quantization parameter index on the basis of the decoded color difference component quantization parameter offset. Therefore, the present invention enables effective quantization by applying different color difference component quantization parameters according to the size of the transform unit when executing the quantization.
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公开(公告)号：US20240236307A9
公开(公告)日：2024-07-11
申请号：US18403620
申请日：2024-01-03
发明人： Hyun Suk KO , Jin Ho LEE , Sung Chang LIM , Jung Won KANG , Ha Hyun LEE , Dong San JUN , Hui Yong KIM
IPC分类号： H04N19/11 , H04N19/105 , H04N19/132 , H04N19/176 , H04N19/46 , H04N19/50 , H04N19/593 , H04N19/70 , H04N19/80
CPC分类号： H04N19/11 , H04N19/105 , H04N19/132 , H04N19/176 , H04N19/46 , H04N19/50 , H04N19/593 , H04N19/70 , H04N19/80
摘要： An image encoding/decoding method is disclosed. A method of decoding an image, the method comprising, deriving an intra prediction mode for a current block, decoding at least one original sample that is present in a rightmost column and a bottommost row (a bottom row) of the current block, constructing a reference sample by using the at least one decoded original sample and performing intra prediction on the current block by using the constructed reference sample.
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公开(公告)号：US20240196010A1
公开(公告)日：2024-06-13
申请号：US18586194
申请日：2024-02-23
发明人： Hyun Suk KO , Sung Chang LIM , Jung Won KANG , Jin Ho LEE , Ha Hyun LEE , Dong San JUN , Hui Yong KIM
IPC分类号： H04N19/593 , H04N19/176 , H04N19/184
CPC分类号： H04N19/593 , H04N19/176 , H04N19/184
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 configuring an MPM list based on intra-prediction modes of neighbor blocks of a current block and a number of frequencies of the intra-prediction modes of the neighbor blocks, deriving an intra-prediction mode of the current block based on the MPM list, and performing intra-prediction for the current block based on the intra-prediction mode.
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公开(公告)号：US20230353735A1
公开(公告)日：2023-11-02
申请号：US18346728
申请日：2023-07-03
发明人： Hyun Suk KO , Sung Chang LIM , Jung Won KANG , Jin Ho LEE , Ha Hyun LEE , Dong San JUN , Hui Yong KIM
IPC分类号： H04N19/117 , H04N19/105 , H04N19/14 , H04N19/159 , H04N19/176
CPC分类号： H04N19/117 , H04N19/105 , H04N19/14 , H04N19/159 , H04N19/176
摘要： The present invention relates to an image encoding and decoding method. An image decoding method for the same includes: determining a reference sample of a current block; performing filtering for the reference sample on the basis of a feature of an area where the reference sample is included; and performing intra-prediction by using the reference sample for which filtering is performed.
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8.发明公开公开(公告)号：US20230344992A1
公开(公告)日：2023-10-26
申请号：US18346735
申请日：2023-07-03
发明人： Dong San JUN , Ha Hyun LEE , Jung Won KANG , Hyun Suk KO , Sung Chang LIM , Jin Ho LEE , Seung Hyun CHO , Hui Yong KIM , Jin Soo CHOI
IPC分类号： H04N19/109 , H04N19/176 , H04N19/91 , H04N19/513 , H04N19/182 , H04N19/132 , H04N19/172 , H04N19/117 , H04N19/174 , H04N19/86 , H04N19/119
CPC分类号： H04N19/109 , H04N19/176 , H04N19/91 , H04N19/513 , H04N19/182 , H04N19/132 , H04N19/172 , H04N19/117 , H04N19/174 , H04N19/86 , H04N19/119
摘要： An image encoding method and an image decoding method are provided. The image decoding method includes deriving a temporal merge candidate from a co-located block of a current block, generating a merge candidate list of the current block based on the derived temporal merge candidate, and generating a prediction block of the current block based on the generated merge candidate list. The deriving a temporal merge candidate includes scaling a motion vector derived from the co-located block based on a POC difference value between the current block and a reference picture of the current block and a POC difference value between the co-located block and a reference picture of the co-located block, and modifying the scaled motion vector based on motion vector scaling information between a neighboring block of the current block and a co-located block of the neighboring block.
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公开(公告)号：US20180359471A1
公开(公告)日：2018-12-13
申请号：US16105222
申请日：2018-08-20
发明人： Jin Ho LEE , Hui Yong KIM , Sung Chang LIM , Jin Soo CHOI , Jin Woong KIM
IPC分类号： H04N19/11 , H04N19/91 , H04N19/44 , H04N19/107 , H04N19/176 , H04N19/184
CPC分类号： H04N19/11 , H04N19/107 , H04N19/176 , H04N19/184 , H04N19/44 , H04N19/91
摘要： An image decoding method, according to the present invention, includes the steps of: deriving an MPM candidate mode from neighboring blocks adjacent to a target block to be decoded; generating an MPM list using the MPM candidate mode derived from the neighboring blocks; and deriving an intra prediction mode for the target block to be decoded using the generated MPM list. According to the present invention, image compression efficiency can be improved.
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10.发明公开公开(公告)号：US20240305778A1
公开(公告)日：2024-09-12
申请号：US18668051
申请日：2024-05-17
发明人： Dong San JUN , Ha Hyun LEE , Jung Won KANG , Hyun Suk KO , Sung Chang LIM , Jin Ho LEE , Seung Hyun CHO , Hui Yong KIM , Jin Soo CHOI
IPC分类号： H04N19/109 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/182 , H04N19/513 , H04N19/86 , H04N19/91
CPC分类号： H04N19/109 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/182 , H04N19/513 , H04N19/86 , H04N19/91
摘要： An image encoding method and an image decoding method are provided. The image decoding method includes deriving a temporal merge candidate from a co-located block of a current block, generating a merge candidate list of the current block based on the derived temporal merge candidate, and generating a prediction block of the current block based on the generated merge candidate list. The deriving a temporal merge candidate includes scaling a motion vector derived from the co-located block based on a POC difference value between the current block and a reference picture of the current block and a POC difference value between the co-located block and a reference picture of the co-located block, and modifying the scaled motion vector based on motion vector scaling information between a neighboring block of the current block and a co-located block of the neighboring block.
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