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171.发明申请公开(公告)号：US20230071970A1
公开(公告)日：2023-03-09
申请号：US17941182
申请日：2022-09-09
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 , H04N19/176 , H04N19/91 , H04N19/513 , H04N19/182 , H04N19/132 , H04N19/172 , H04N19/117 , H04N19/174 , H04N19/86 , H04N19/119
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：US20220295066A1
公开(公告)日：2022-09-15
申请号：US17828745
申请日：2022-05-31
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
Inventor： Hui Yong KIM , Sung Chang LIM , Jin Ho LEE , Jin Soo CHOI , Jin Woong KIM , Gwang Hoon PARK , Kyung Yong KIM
IPC: H04N19/129 , H04N19/176 , H04N19/70 , H04N19/122 , H04N19/159 , H04N19/119 , H04N19/136 , H04N19/61 , H04N19/593 , H04N19/625 , H04N19/124 , H04N19/157 , H04N19/44
Abstract: A method and a device for encoding/decoding images are disclosed. The method for encoding images comprises the steps of: deriving a scan type of a residual signal for a current block according to whether or not the current block is a transform skip block; and applying the scan type to the residual signal for the current block, wherein the transform skip block is a block to which transform for the current block is not applied and is specified on the basis of information indicating whether or not transform for the current block is to be applied.
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173.发明申请公开(公告)号：US20220279171A1
公开(公告)日：2022-09-01
申请号：US17744845
申请日：2022-05-16
Inventor： Jin Ho LEE , Sung Chang LIM , Jung Won KANG , Hyun Suk KO , Dong San JUN , Ha Hyun LEE , Seung Hyun CHO , Hui Yong KIM , Jin Soo CHOI
IPC: H04N19/107 , H04N19/176 , H04N19/117 , H04N19/147 , H04N19/119 , H04N19/11 , H04N19/105 , H04N19/30 , H04N19/91 , H04N19/146 , H04N19/44 , H04N19/126 , H04N19/52
Abstract: The present invention relates to an image encoding/decoding method and apparatus. An image decoding method performing intra prediction according to the present invention may comprise dividing a current block into at least one sub-block; deriving an intra prediction mode for the at least one sub-block; constructing a reference sample for the intra prediction; and performing intra prediction for the at least one sub-block based on the derived intra prediction mode.
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174.发明申请公开(公告)号：US20220256187A1
公开(公告)日：2022-08-11
申请号：US17723725
申请日：2022-04-19
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
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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公开(公告)号：US20220224896A1
公开(公告)日：2022-07-14
申请号：US17711477
申请日：2022-04-01
Applicant: Electronics and Telecommunications Research Institute , Kwangwoon University Industry-Academic Collaboration Foundation , Universily-lndustry Cooperation Group of Kyung Hee University
Inventor： Sung Chang LIM , Ha Hyun LEE , Se Yoon JEONG , Hui Yong KIM , Suk Hee CHO , Jong Ho KIM , Jin Ho LEE , Jin Soo CHOI , Jin Woong KIM , Chie Teuk AHN , Dong Gyu SIM , Seoung Jun OH , Gwang Hoon PARK , Sea Nae PARK , Chan Woong JEON
IPC: H04N19/117 , H04N19/46 , H04N19/593 , H04N19/132 , H04N19/176 , H04N19/17 , H04N19/50 , H04N19/109 , H04N19/159 , H04N19/174 , H04N19/192 , H04N19/82
Abstract: The present invention relates to an apparatus and method for encoding and decoding an image by skip encoding. The image-encoding method by skip encoding, which performs intra-prediction, comprises: performing a filtering operation on the signal which is reconstructed prior to an encoding object signal in an encoding object image; using the filtered reconstructed signal to generate a prediction signal for the encoding object signal; setting the generated prediction signal as a reconstruction signal for the encoding object signal; and not encoding the residual signal which can be generated on the basis of the difference between the encoding object signal and the prediction signal, thereby performing skip encoding on the encoding object signal.
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Patent Agency Ranking
176.发明申请公开(公告)号：US20220159237A1
公开(公告)日：2022-05-19
申请号：US17590161
申请日：2022-02-01
Applicant: Electronics and Telecommunications Research Institute , University-Industry Cooperation Group of Kyung Hee University
Inventor： Se Yoon JEONG , Hui Yong KIM , Sung Chang LIM , Jin Ho LEE , Ha Hyun LEE , Jong Ho KIM , Jin Soo CHOI , Jin Woong KIM , Chie Teuk AHN , Gwang Hoon PARK , Kyung Yong KIM , Han Soo LEE , Tae Ryong KIM
IPC: H04N19/10 , H04N19/105 , H04N19/136 , H04N19/196
Abstract: A method for coding image information includes generating prediction information by predicting information on a current coding unit, and determining whether the information on the current coding unit is the same as the prediction information. When the information on the current coding unit is the same as the prediction information, a flag indicating that the information on the current coding unit is the same as the prediction information is coded and transmitted. When the information on the current coding unit is not the same as the prediction information, a flag indicating that the information on the current coding unit is not the same as the prediction information and the information on the current coding unit are coded and transmitted. At the generating of the prediction information, the prediction information is generated by using the information on the coding unit neighboring to the current coding unit
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177.发明申请公开(公告)号：US20220094958A1
公开(公告)日：2022-03-24
申请号：US17540290
申请日：2021-12-02
Applicant: Electronics and Telecommunications Research Institute , KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Jong Ho KIM , Hui Yong KIM , Se Yoon JEONG , Sung Chang LIM , Ha Hyun LEE , Jin Ho LEE , Suk Hee CHO , Jin Soo CHOI , Jin Woong KIM , Chie Teuk AHN , Mun Churl KIM , Bum Shik LEE
Abstract: Disclosed decoding method of the intra prediction mode comprises the steps of: determining whether an intra prediction mode of a present prediction unit is the same as a first candidate intra prediction mode or as a second candidate intra prediction mode on the basis of 1-bit information; and determining, among said first candidate intra prediction mode and said second candidate intra prediction mode, which candidate intra prediction mode is the same as the intra prediction mode of said present prediction unit on the basis of additional 1-bit information, if the intra prediction mode of the present prediction unit is the same as at least either the first candidate intra prediction mode or the second candidate intra prediction mode, and decoding the intra prediction mode of the present prediction unit.
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公开(公告)号：US20220086438A1
公开(公告)日：2022-03-17
申请号：US17532442
申请日：2021-11-22
Inventor： Jin Ho LEE , Jung Won KANG , Ha Hyun LEE , Jin Soo CHOI , Jin Woong KIM
IPC: H04N19/117 , H04N19/176 , H04N19/30 , H04N19/14 , H04N19/80 , H04N19/105 , H04N19/124 , H04N19/13 , H04N19/159 , H04N19/51 , H04N19/61
Abstract: A video decoding method according to an embodiment of the present invention may include determining a type of a filter to be applied to a first-layer picture which a second-layer picture as a decoding target refers to; determining a filtering target of the first-layer picture to which the filter is applied; filtering the filtering target based on the type of the filter; and adding the filtered first-layer picture to a second-layer reference picture list. Accordingly, the video decoding method and an apparatus using the same may reduce a prediction error in an upper layer and enhance encoding efficiency.
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179.发明申请公开(公告)号：US20220070450A1
公开(公告)日：2022-03-03
申请号：US17401424
申请日：2021-08-13
Inventor： Seung Hyun CHO , Jung Won KANG , Sung Chang LIM , Hyun Suk KO , Dong San JUN , Jin Ho LEE , Ha Hyun LEE , Hui Yong KIM , Jin Soo CHOI
IPC: H04N19/11 , H04N19/105 , H04N19/176 , H04N19/96 , H04N19/119
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, determining whether or not a left boundary or an upper boundary of the current block is a boundary of a predetermined image region, configuring a reference sample by using at least one reconstructed sample included in at least one reconstructed sample line adjacent to the current block based on the determination result, 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：US20220030227A1
公开(公告)日：2022-01-27
申请号：US17401578
申请日：2021-08-13
Inventor： Hyun Suk KO , Jin Ho LEE , Sung Chang LIM , Jung Won KANG , Ha Hyun LEE , Dong San JUN , Seung Hyun CHO , Hui Yong KIM , Jin Soo CHOI
IPC: H04N19/11 , H04N19/176 , H04N19/159 , H04N19/105 , H04N19/593 , H04N19/184 , H04N19/96
Abstract: The present invention relates to an intra prediction method and apparatus. The image decoding method according to the present invention may comprise decoding information on intra prediction; and generating a prediction block by performing intra prediction for a current block based on the information on intra prediction. The information on intra prediction may include information on an intra prediction mode, and the intra prediction mode may include a curved intra prediction mode.
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