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公开(公告)号：US20240275953A1
公开(公告)日：2024-08-15
申请号：US18645298
申请日：2024-04-24
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 a Block Copy (BC) prediction mode referring to a current picture, decoding the current block, based on the BC prediction mode; and when the prediction mode of the current block is an inter prediction mode referring to at least one picture, decoding the current block, based on the inter prediction mode.
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公开(公告)号：US20220239948A1
公开(公告)日：2022-07-28
申请号：US17716956
申请日：2022-04-08
发明人： Jaehong JUNG , Juhyung SON , Dongcheol KIM , Geonjung KO , Jinsam KWAK
IPC分类号： H04N19/61 , H04N19/132 , H04N19/176 , H04N19/18 , H04N19/70
摘要： A video signal decoding apparatus, comprising a processor, wherein the processor is configured to: parse a syntax element related to a secondary transform of a coding unit based on whether a prediction method of the coding unit is MIP (Matrix based Intra Prediction), check whether or not the secondary transform is applied to a transform block included in the coding unit based on the parsed syntax element, obtain one or more inverse transform coefficients based on an inverse transform of the secondary transform when the secondary transform is applied to the transform block, obtain a residual sample for the transform block based on the one or more inverse transform coefficients.
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公开(公告)号：US20210297662A1
公开(公告)日：2021-09-23
申请号：US17343258
申请日：2021-06-09
发明人： Geonjung KO , Dongcheol KIM , Juhyung SON , Jaehong JUNG , Jinsam KWAK
IPC分类号： H04N19/105 , H04N19/176 , H04N19/186 , H04N19/593 , H04N19/174 , 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 a Block Copy (BC) prediction mode referring to a current picture, decoding the current block, based on the BC prediction mode; and when the prediction mode of the current block is an inter prediction mode referring to at least one picture, decoding the current block, based on the inter prediction mode.
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公开(公告)号：US20210044808A1
公开(公告)日：2021-02-11
申请号：US16964949
申请日：2019-01-25
发明人： Dongcheol KIM , Geonjung KO , Jaehong JUNG , Juhyung SON , Jinsam KWAK
IPC分类号： H04N19/159 , H04N19/105 , H04N19/11 , H04N19/176 , H04N19/593
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.
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公开(公告)号：US20210392365A1
公开(公告)日：2021-12-16
申请号：US17460117
申请日：2021-08-27
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： A video signal decoding device comprising a processor, wherein the processor is configured to: obtain reference samples corresponding to a first side of a current block and reference samples corresponding to a second side of the current block, obtain a direct current (DC) value for prediction of the current block based on a reference sample set comprising at least some of the reference samples corresponding to the first side and the reference samples corresponding to the second side, and reconstruct the current block based on the DC value.
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公开(公告)号：US20210289197A1
公开(公告)日：2021-09-16
申请号：US17333887
申请日：2021-05-28
发明人： Geonjung KO , Dongcheol KIM , Juhyung SON , Jaehong JUNG , Jinsam KWAK
IPC分类号： H04N19/105 , H04N19/132 , H04N19/159 , H04N19/46 , H04N19/82 , H04N19/176
摘要： A video signal processing method comprises: a step for deriving an intra prediction mode of a current block; a step for constructing a reference sample around the current block; a step for generating a prediction sample of the current block by using the reference sample on the basis of the intra prediction mode; and a step for restoring the current block on the basis of the prediction sample. The step for generating the prediction sample may comprise: a step for setting a filter flag value which specifies a filter coefficient of an interpolation filter applied to the reference sample on the basis of the width and height of the current block; and a step for performing filtering on the reference sample by using the interpolation filter having the filter coefficient specified by the filter flag.
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公开(公告)号：US20210266583A1
公开(公告)日：2021-08-26
申请号：US17314373
申请日：2021-05-07
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
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：US20210250622A1
公开(公告)日：2021-08-12
申请号：US17244083
申请日：2021-04-29
发明人： Jaehong JUNG , Juhyung SON , Dongcheol KIM , Geonjung KO , Jinsam KWAK
IPC分类号： H04N19/96 , H04N19/70 , H04N19/184 , H04N19/176
摘要： A video signal processing method comprises: obtaining, from a bitstream, a skip parameter (cu_skip_flag) indicating whether a skip mode is applied to a current block; when the skip parameter indicates that a mode is not the skip mode, obtaining, from the bitstream, a merge parameter (merge_flag) indicating whether the current block is coded with a merge mode; and determining whether a coded block flag (CBF) parameter (cu_cbf), which indicates whether a syntax element related to transform is obtained from the bitstream, is obtained, according to a value of the merge parameter, wherein, when the value of the merge parameter indicates the merge mode, the CBF parameter is not obtained from the bitstream and is determined to be a preconfigured value.
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公开(公告)号：US20240244263A1
公开(公告)日：2024-07-18
申请号：US18620899
申请日：2024-03-28
申请人： HUMAX CO., LTD.
发明人： Jaehong JUNG , Dongcheol KIM , Juhyung SON , Geonjung KO , Jinsam KWAK
IPC分类号： H04N19/61 , H04N19/119 , H04N19/159 , H04N19/176 , H04N19/70
CPC分类号： H04N19/619 , H04N19/119 , H04N19/159 , H04N19/176 , H04N19/70
摘要： A video signal 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 di agonal scan order regardless of a size of the current block.
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公开(公告)号：US20230188754A1
公开(公告)日：2023-06-15
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： H04N19/61 , H04N19/119 , H04N19/159 , H04N19/176 , 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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