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公开(公告)号：US11677937B2
公开(公告)日：2023-06-13
申请号：US17473195
申请日：2021-09-13
发明人： Je Won Kang , Sang Hyo Park , Seung Wook Park , Wha Pyeong Lim
IPC分类号： H04N19/107 , H04N19/176 , H04N19/184 , H04N19/513 , H04N19/70
CPC分类号： H04N19/107 , H04N19/176 , H04N19/184 , H04N19/513 , H04N19/70
摘要： Image decoding of decoding a sequence of coded pictures on a block-by-block basis is provided. The image decoding incudes decoding a first high-level syntax element from a bitstream to determine, at a sequence level, whether affine motion prediction is allowed. A second high-level syntax element is extracted for each of at least one coding tool from the bitstream depending on the first high-level syntax element. At a picture level, the method determines whether each of the at least one coding tool is allowed. The coding tool includes sample-by-sample adjustment of affine motion prediction samples.
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公开(公告)号：US20220286692A1
公开(公告)日：2022-09-08
申请号：US17637734
申请日：2020-08-27
发明人： Je Won Kang , Seung Wook Park , Wha Pyeong Lim
IPC分类号： H04N19/186 , H04N19/132 , H04N19/70 , H04N19/176 , H04N19/136 , H04N19/124 , H04N19/11 , H04N19/593
摘要： Video encoding and decoding methods are configured to apply differential coding to residual signals to enhance compression performance in a transform skip mode, and methods of controlling the differential coding are configured at a high-level and at a block-level.
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公开(公告)号：US20220217396A1
公开(公告)日：2022-07-07
申请号：US17704778
申请日：2022-03-25
发明人： Je Won Kang , Seung Wook Park , Wha Pyeong Lim
IPC分类号： H04N19/46 , H04N19/167 , H04N19/117 , H04N19/172 , H04N19/132 , H04N19/13 , H04N19/597 , H04N19/82
摘要： Disclosed is a method for signaling virtual boundary information and constraining an operation of an in-loop filter on a virtual boundary by using the signaled boundary information in order to prevent performance deterioration which may occur when applying the in-loop filter for a discontinuous boundary (or virtual boundary) depending on frame packing in an encoding/decoding of a 360-degree omnidirectional video.
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公开(公告)号：US20220086435A1
公开(公告)日：2022-03-17
申请号：US17520057
申请日：2021-11-05
发明人： Je Won Kang , Sang Hyo Park , Seung Wook Park , Wha Pyeong Lim
IPC分类号： H04N19/11 , H04N19/105 , H04N19/139 , H04N19/159 , H04N19/167 , H04N19/176 , H04N19/70
摘要： An apparatus for decoding video data includes a decoder configured to decode, from a bitstream, a syntax element indicating an intra-prediction type of a current block of the video data, and an intra-predictor configured to generate a prediction block for the current block by selectively performing matrix based intra-prediction (MIP) or regular intra-prediction based on the intra-prediction type of the current block indicated by the syntax element.
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公开(公告)号：US20220078413A1
公开(公告)日：2022-03-10
申请号：US17520031
申请日：2021-11-05
发明人： Je Won Kang , Sang Hyo Park , Seung Wook Park , Wha Pyeong Lim
IPC分类号： H04N19/11 , H04N19/105 , H04N19/139 , H04N19/159 , H04N19/167 , H04N19/176 , H04N19/70
摘要： An apparatus for decoding video data includes a decoder configured to decode, from a bitstream, a syntax element indicating an intra-prediction type of a current block of the video data, and an intra-predictor configured to generate a prediction block for the current block by selectively performing matrix based intra-prediction (MIP) or regular intra-prediction based on the intra-prediction type of the current block indicated by the syntax element.
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公开(公告)号：US20210392328A1
公开(公告)日：2021-12-16
申请号：US17286798
申请日：2020-06-22
发明人： Je Won Kang , Sang Hyo Park , Seung Wook Park , Wha Pyeong Lim
IPC分类号： H04N19/127 , H04N19/186 , H04N19/184 , H04N19/132 , H04N19/103 , H04N19/136 , H04N19/187 , H04N19/13
摘要： A method and device for controlling coding tools are provided. The video decoding method includes decoding, from a high level of a bitstream, an enable flag indicating whether one or more coding tools are enabled. The coding tools includes a first coding tool that encodes sample values using luma component mapping based on a piecewise linear model. The method includes acquiring a value of an application flag depending on a value of the enable flag, by setting the application flag indicating whether to apply the coding tools to a predetermined value, or by decoding the application flag from a low level of the bitstream, the application flag including a first application flag indicating whether to apply the first coding tool. The coding tools are operated when the value of the application flag is a value indicating that the coding tools are applied.
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公开(公告)号：US12069285B2
公开(公告)日：2024-08-20
申请号：US17704778
申请日：2022-03-25
发明人： Je Won Kang , Seung Wook Park , Wha Pyeong Lim
IPC分类号： H04N19/46 , H04N19/117 , H04N19/13 , H04N19/132 , H04N19/167 , H04N19/172 , H04N19/597 , H04N19/82
CPC分类号： H04N19/46 , H04N19/117 , H04N19/13 , H04N19/132 , H04N19/167 , H04N19/172 , H04N19/597 , H04N19/82
摘要： Disclosed is a method for signaling virtual boundary information and constraining an operation of an in-loop filter on a virtual boundary by using the signaled boundary information in order to prevent performance deterioration which may occur when applying the in-loop filter for a discontinuous boundary (or virtual boundary) depending on frame packing in an encoding/decoding of a 360-degree omnidirectional video.
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公开(公告)号：US11917180B2
公开(公告)日：2024-02-27
申请号：US18093562
申请日：2023-01-05
发明人： Je Won Kang , Sang Hyo Park , Seung Wook Park , Wha Pyeong Lim
IPC分类号： H04N19/44 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/70
CPC分类号： H04N19/44 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/70
摘要： A method and apparatus for intra-prediction coding of video data are provided. The apparatus includes a decoder that is configured to decode, from a bitstream, a syntax element indicating an intra-prediction type of a current block of the video data, and an intra-predictor that is configured to generate a prediction block for the current block by selectively performing matrix based intra-prediction or regular intra-prediction based on the intra-prediction type of the current block indicated by the syntax element.
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39.发明公开公开(公告)号：US20240054686A1
公开(公告)日：2024-02-15
申请号：US18029022
申请日：2021-09-29
发明人： Je Won Kang , Chae Hwa Yoo , Seung Wook Park , Wha Pyeong Lim
CPC分类号： G06T9/002 , G06T3/4046 , G06V10/7715 , G06V10/82
摘要： A VCM coding apparatus and a VCM coding method, related to a deep learning-based feature map coding apparatus in a multitasking system for machine vision, are provided for performing default procedures of generating and compressing a common feature map related to multiple tasks implied by an original video. The VCM coding apparatus and the VCM coding method can further generate and compress a task-specific feature map whenever needed for higher performance than obtainable with the common feature map to ensure relatively acceptable performance for both machine vision and human vision.
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公开(公告)号：US11849140B2
公开(公告)日：2023-12-19
申请号：US17868990
申请日：2022-07-20
发明人： Je Won Kang , Seung Wook Park , Wha Pyeong Lim
IPC分类号： H04N19/52 , H04N19/132 , H04N19/176 , H04N19/70
CPC分类号： H04N19/52 , H04N19/132 , H04N19/176 , H04N19/70
摘要： A video decoding apparatus is provided for decoding pictures using inter-prediction. The video decoding apparatus includes a predictor that generates affine prediction samples for respective subblocks in a target block in a current picture to be decoded by performing affine motion prediction on a subblock-by-subblock basis using control point motion vectors which respectively correspond to corners of the target block. The predictor also modifies sample values of the affine prediction samples by executing a first coding tool, the first coding tool compensating for motion according to sample positions in each of the subblocks using the control point motion vectors.
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