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公开(公告)号：US12184867B2
公开(公告)日：2024-12-31
申请号：US18317685
申请日：2023-05-15
Inventor： Sung Chang Lim , Hui Yong Kim , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim , Jae Gon Kim , Hae Chul Choi , Sang Yong Lee
IPC: H04N19/157 , H04N19/11 , H04N19/176 , H04N19/196 , H04N19/593 , H04N19/70
Abstract: An intra prediction mode encoding and decoding method, an image decoding device, and an image encoding device operate by deriving most probable modes (MPMs) from surrounding prediction units adjacent to a current prediction unit and deriving an intra prediction mode of the current prediction unit on the basis of an MPM flag indicating whether an MPM having the same prediction mode as the intra prediction mode of the current prediction unit exists among the derived MPMs.
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2.发明授权公开(公告)号：US12155859B2
公开(公告)日：2024-11-26
申请号：US18346732
申请日：2023-07-03
Applicant: INTELLECTUAL DISCOVERY CO., LTD.
Inventor： 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: H04N19/176 , H04N19/105 , H04N19/139 , H04N19/513 , H04N19/537
Abstract: 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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3.发明授权公开(公告)号：US12047563B2
公开(公告)日：2024-07-23
申请号：US17941182
申请日：2022-09-09
Applicant: INTELLECTUAL DISCOVERY CO., LTD.
Inventor： 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: H04N19/176 , H04N19/109 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/172 , H04N19/174 , H04N19/182 , H04N19/513 , H04N19/86 , H04N19/91
CPC classification number: H04N19/109 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/182 , H04N19/513 , H04N19/86 , H04N19/91
Abstract: 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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4.发明授权公开(公告)号：US11051019B2
公开(公告)日：2021-06-29
申请号：US16794054
申请日：2020-02-18
Applicant: INTELLECTUAL DISCOVERY CO., LTD.
Inventor： 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: H04N19/124 , H04N19/186 , H04N19/463 , H04N19/157 , H04N19/122 , H04N19/46 , H04N19/105 , H04N19/117 , H04N19/13 , H04N19/15 , H04N19/159 , H04N19/43 , H04N19/61 , H04N19/174 , H04N19/176
Abstract: 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：US11689728B2
公开(公告)日：2023-06-27
申请号：US17503570
申请日：2021-10-18
Inventor： Jin Ho Lee , Hui Yong Kim , Sung Chang Lim , Jin Soo Choi , Jin woong Kim , Jae Gon Kim , Hae Chul Choi , Sang Yong Lee
IPC: H04N19/157 , H04N19/11 , H04N19/176 , H04N19/196 , H04N19/593 , H04N19/70
CPC classification number: H04N19/157 , H04N19/11 , H04N19/176 , H04N19/198 , H04N19/593 , H04N19/70
Abstract: An intra prediction mode encoding and decoding method, an image decoding device, and an image encoding device operate by deriving most probable modes (MPMs) from surrounding prediction units adjacent to a current prediction unit and deriving an intra prediction mode of the current prediction unit on the basis of an MPM flag indicating whether an MPM having the same prediction mode as the intra prediction mode of the current prediction unit exists among the derived MPMs.
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Patent Agency Ranking
公开(公告)号：US20250080752A1
公开(公告)日：2025-03-06
申请号：US18952269
申请日：2024-11-19
Inventor： Sung Chang LIM , Hui Yong Kim , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim , Jae Gon Kim , Sang Yong Lee , Hae Chul CHOI
IPC: H04N19/157 , H04N19/11 , H04N19/176 , H04N19/196 , H04N19/593 , H04N19/70
Abstract: An intra prediction mode encoding and decoding method, an image decoding device, and an image encoding device operate by deriving most probable modes (MPMs) from surrounding prediction units adjacent to a current prediction unit and deriving an intra prediction mode of the current prediction unit on the basis of an MPM flag indicating whether an MPM having the same prediction mode as the intra prediction mode of the current prediction unit exists among the derived MPMs.
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7.发明授权公开(公告)号：US12081741B2
公开(公告)日：2024-09-03
申请号：US18346735
申请日：2023-07-03
Applicant: INTELLECTUAL DISCOVERY CO., LTD.
Inventor： 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: H04N19/109 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/182 , H04N19/513 , H04N19/86 , H04N19/91
CPC classification number: H04N19/109 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/182 , H04N19/513 , H04N19/86 , H04N19/91
Abstract: 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：US20230336740A1
公开(公告)日：2023-10-19
申请号：US18317685
申请日：2023-05-15
Inventor： Sung Chang LIM , Hui Yong Kim , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim , Jae Gon Kim , Sang Yong Lee , Hae Chul CHOI
IPC: H04N19/157 , H04N19/11 , H04N19/176 , H04N19/196 , H04N19/593 , H04N19/70
CPC classification number: H04N19/157 , H04N19/11 , H04N19/176 , H04N19/198 , H04N19/593 , H04N19/70
Abstract: An intra prediction mode encoding and decoding method, an image decoding device, and an image encoding device operate by deriving most probable modes (MPMs) from surrounding prediction units adjacent to a current prediction unit and deriving an intra prediction mode of the current prediction unit on the basis of an MPM flag indicating whether an MPM having the same prediction mode as the intra prediction mode of the current prediction unit exists among the derived MPMs.
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9.发明授权公开(公告)号：US10045026B2
公开(公告)日：2018-08-07
申请号：US15656282
申请日：2017-07-21
Applicant: Intellectual Discovery Co., Ltd.
Inventor： 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: H04N19/124 , H04N19/186 , H04N19/117 , H04N19/463 , H04N19/43 , H04N19/105 , H04N19/61 , H04N19/13 , H04N19/15 , H04N19/159 , H04N19/46 , H04N19/122 , H04N19/157 , H04N19/174 , H04N19/176
CPC classification number: H04N19/124 , H04N19/105 , H04N19/117 , H04N19/122 , H04N19/13 , H04N19/15 , H04N19/157 , H04N19/159 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/43 , H04N19/46 , H04N19/463 , H04N19/61
Abstract: 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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10.发明授权公开(公告)号：US12022110B2
公开(公告)日：2024-06-25
申请号：US17723725
申请日：2022-04-19
Applicant: INTELLECTUAL DISCOVERY CO., LTD.
Inventor： 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: H04N19/513 , H04N19/105 , H04N19/139 , H04N19/176 , H04N19/537
CPC classification number: H04N19/521 , H04N19/105 , H04N19/139 , H04N19/176 , H04N19/537
Abstract: 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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