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公开(公告)号：US12003699B2
公开(公告)日：2024-06-04
申请号：US17343258
申请日：2021-06-09
申请人： HUMAX CO., LTD.
发明人： Geonjung Ko , Dongcheol Kim , Juhyung Son , Jaehong Jung , Jinsam Kwak
IPC分类号： H04N19/105 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/593 , H04N19/96
CPC分类号： H04N19/105 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/593 , H04N19/96
摘要： A video signal processing method comprises: determining a prediction mode of a current block; when the prediction mode of the current block is an Intra Block Copy (IBC) prediction mode, decoding the current block, based on the IBC prediction mode and a reference block included in a first reference block set; and when the prediction mode of the current block is an inter prediction mode, decoding the current block, based on the inter prediction mode and a reference block included in a second reference block set.
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公开(公告)号：US11917187B2
公开(公告)日：2024-02-27
申请号：US18146227
申请日：2022-12-23
申请人： HUMAX CO., LTD.
发明人： Jaehong Jung , Dongcheol Kim , Geonjung Ko , Juhyung Son , Jinsam Kwak
IPC分类号： H04N19/513 , H04N19/105 , H04N19/132 , H04N19/137 , H04N19/176
CPC分类号： H04N19/513 , H04N19/105 , H04N19/132 , H04N19/137 , H04N19/176
摘要： Disclosed is a video signal processing method comprising the steps of: acquiring a merge index which indicates a candidate for prediction of a current block among a plurality of candidates for the prediction of the current block, which are included in a merge candidate list; acquiring motion information of the current block on the basis of motion information corresponding to the candidate indicated by the merge index; when the motion information of the current block includes a plurality of motion vectors corresponding to a list of different reference pictures, comparing picture order count (POC) differences between each of the reference pictures corresponding to the plurality of motion vectors and the current picture including the current block; correcting the plurality of motion vectors on the basis of a result of the comparison; and reconstructing the current block on the basis of the plurality of corrected motion vectors.
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公开(公告)号：US20220174315A1
公开(公告)日：2022-06-02
申请号：US17672880
申请日：2022-02-16
发明人： Geonjung KO , Dongcheol Kim , Juhyung Son , Jaehong Jung , Jinsam Kwak
IPC分类号： H04N19/593 , H04N19/11 , H04N19/136 , H04N19/176
摘要： Disclosed are a video signal processing method and apparatus for encoding or decoding a video signal. In more detail, the video signal processing method includes receiving intra prediction mode information for a current block, wherein the intra prediction mode information indicates one of a plurality of intra prediction modes configuring an intra prediction mode set; and decoding the current block based on the received intra prediction mode information, wherein the intra prediction mode set comprises a plurality of angle modes, and the plurality of angle modes comprises a basic angle mode and an extended angle mode, wherein the extended angle mode is signaled based on the basic angle mode.
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公开(公告)号：US11140384B2
公开(公告)日：2021-10-05
申请号：US16907081
申请日：2020-06-19
发明人： Geonjung Ko , Juhyung Son , Dongcheol Kim , Jaehong Jung , Jinsam Kwak
IPC分类号： H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176
摘要： Disclosed is a video signal processing method and device for encoding or decoding a video signal. More specifically, disclosed are a video signal processing method and a video signal processing device for performing the method, the method comprising: obtaining reference line information indicating a reference line for intra prediction of a current block among a plurality of reference lines comprising neighboring samples of the current block; determining, on the basis of the reference line information, an intra prediction mode for the current block among a plurality of intra prediction modes constituting an intra prediction mode set; and decoding the current block on the basis of a plurality of reference samples on the reference line according to the reference line information and the determined intra prediction mode, wherein the plurality of reference lines include a first reference line comprising neighboring samples on a line adjacent to the boundary of the current block and a second reference line comprising neighboring samples on a line spaced a distance corresponding to a predetermined number of samples apart from the boundary of the current block.
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公开(公告)号：US11044470B2
公开(公告)日：2021-06-22
申请号：US17089267
申请日：2020-11-04
发明人： Dongcheol Kim , Geonjung Ko , Jaehong Jung , Juhyung Son , Jinsam Kwak
IPC分类号： H04N19/105 , H04N19/176
摘要： A video signal processing method comprises the steps of: acquiring reference samples on a first side of a current block and reference samples on a second side thereof on the basis of pre-restored samples neighboring the current block; acquiring a direct current (DC) value for a prediction of the current block on the basis of a reference sample set composed of at least some of the reference samples on the first side and the reference samples on the second side, wherein the reference sample set includes the number of reference samples raised to a power of 2, obtained by excluding some of the reference samples on the first side and the reference samples on the second side, if the length of the first side and the length of the second side are different; and restoring the current block on the basis of the DC value.
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公开(公告)号：US20210185358A1
公开(公告)日：2021-06-17
申请号：US17185683
申请日：2021-02-25
发明人： Jaehong Jung , Juhyung SON , Dongcheol KIM , Geonjung KO , Jinsam KWAK
IPC分类号： H04N19/625 , H04N19/61 , H04N19/176 , H04N19/12
摘要： Disclosed is a video signal processing method comprising the steps of: obtaining at least one transform block for a residual signal of a current block from a video signal bitstream; determining, on the basis of length information of a first side of the transform block, a horizontal transform kernel for horizontal transformation of the transform block, regardless of the length of a second side of the transform block, which is orthogonal to the first side; determining, on the basis of length information of the second side, a vertical transform kernel for vertical transformation of the transform block, regardless of the length of the first side; obtaining the residual signal of the current block by performing, on the transform block, inverse transformation using the horizontal transform kernel and the vertical transform kernel; and reconstructing the current block on the basis of the obtained residual signal.
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公开(公告)号：US20200322601A1
公开(公告)日：2020-10-08
申请号：US16907081
申请日：2020-06-19
发明人： Geonjung KO , Juhyung Son , Dongcheol Kim , Jaehong Jung , Jinsam Kwak
IPC分类号： H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176
摘要： Disclosed is a video signal processing method and device for encoding or decoding a video signal. More specifically, disclosed are a video signal processing method and a video signal processing device for performing the method, the method comprising: obtaining reference line information indicating a reference line for intra prediction of a current block among a plurality of reference lines comprising neighboring samples of the current block; determining, on the basis of the reference line information, an intra prediction mode for the current block among a plurality of intra prediction modes constituting an intra prediction mode set; and decoding the current block on the basis of a plurality of reference samples on the reference line according to the reference line information and the determined intra prediction mode, wherein the plurality of reference lines include a first reference line comprising neighboring samples on a line adjacent to the boundary of the current block and a second reference line comprising neighboring samples on a line spaced a distance corresponding to a predetermined number of samples apart from the boundary of the current block.
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公开(公告)号：US11973986B2
公开(公告)日：2024-04-30
申请号：US18164460
申请日：2023-02-03
申请人： HUMAX CO., LTD.
发明人： Jaehong Jung , Dongcheol Kim , Juhyung Son , Geonjung Ko , Jinsam Kwak
IPC分类号： H04N19/119 , H04N19/159 , H04N19/176 , H04N19/61 , H04N19/70
CPC分类号： H04N19/619 , H04N19/119 , H04N19/159 , H04N19/176 , H04N19/70
摘要： A video signal processing device includes a processor. The processor is configured to obtain a secondary transform kernel for a current block based on an intra prediction mode of the current block to which a secondary transform is applied, to obtain a secondary inverse transformed block by performing a secondary inverse transform on a top-left specific region of the current block using the secondary transform kernel, wherein the secondary inverse transform is an inverse transform of the secondary transform, and the secondary transform is a low frequency non-separable transform, to obtain a residual block of the current block by performing a primary inverse transform on the secondary inverse transformed block, wherein one or more coefficients of the top-left specific region of the current block are derived in a preset scan order and the preset scan order is a 4×4 up-right diagonal scan order regardless of a size of the current block.
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公开(公告)号：US11166040B2
公开(公告)日：2021-11-02
申请号：US17113215
申请日：2020-12-07
发明人： Geonjung Ko , Dongcheol Kim , Juhyung Son , Jaehong Jung , Jinsam Kwak
IPC分类号： H04N19/513 , H04N19/53 , H04N19/57
摘要： An apparatus for decoding a video signal, the apparatus comprising a processor, wherein the processor is configured to: configure a Motion Vector Prediction (MVP) candidate list for motion compensation of a current block through one of a first method and a second method, acquire a motion vector predictor of the current block, based on the configured MVP candidate list, acquire a motion vector differential value indicating a difference between a motion vector of the current block and the motion vector predictor, modify the motion vector differential value, based on a resolution of the motion vector differential value of the current block, acquire the motion vector of the current block, based on the motion vector predictor and the modified motion vector differential value, and reconstruct the current block, based on the acquired motion vector.
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公开(公告)号：US12034945B2
公开(公告)日：2024-07-09
申请号：US17655354
申请日：2022-03-17
申请人： HUMAX CO., LTD.
发明人： Jaehong Jung , Juhyung Son , Dongcheol Kim , Geonjung Ko , Jinsam Kwak
IPC分类号： H04N19/00 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/30 , H04N19/46 , H04N19/96
CPC分类号： H04N19/30 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/96
摘要： The present disclosure relates to a processing method of a video signal, the processing method comprising the steps of: scaling a transform coefficient for a current block on the basis of an intermediate scaling factor array; when the flag indicates that a low frequency non-separable transform is applied to the current block, obtaining a residual for the current block by applying an inverse transform of a non-separable transform and an inverse transform of a primary transform on the scaled transform coefficient, wherein the primary transform is a transform applied to a residual signal of a spatial domain before the low frequency non-separable transform; and reconstructing the current block on the basis of the residual and a predictor of the current block.
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