公开(公告)号：US20220295068A1

公开(公告)日：2022-09-15

申请号：US17438626

申请日：2020-03-13

申请人： Hyundai Motor Company ,  Kia Motors Corporation ,  Ewha University - Industry Collaboration Foundation

发明人： Je Won Kang ,  Sang Hyo Park ,  Seung Wook Park ,  Wha Pyeong Lim

IPC分类号： H04N19/132 ,  H04N19/119 ,  H04N19/176 ,  H04N19/61 ,  H04N19/70 ,  H04N19/186

摘要： Disclosed are a method and an apparatus for efficiently applying a transform skip mode to a transform block. According to an embodiment of the present invention, a video decoding apparatus determines, based on transform skip information associated with a current block, the transform skip information being decoded from a bitstream, whether a subblock for which transform is skipped and one or more subblocks to which transform is applied are included in the current block. When determining that the current block includes the subblock for which the transform is skipped and the one or more subblocks to which the transform is applied are included in the current block, the video decoding apparatus decodes a first residual subblock using a decoding procedure not involving inverse transform for the subblock for which the transform is skipped, and decodes one or more second residual subblocks using a decoding procedure involving the inverse transform for the one or more subblocks to which the transform is applied. The video decoding apparatus adds the first residual subblock and the one or more second residual subblocks to a prediction block to reconstruct the current block. Representative drawing: FIGS. 5A-5D

公开(公告)号：US20210409695A1

公开(公告)日：2021-12-30

申请号：US17473365

申请日：2021-09-13

申请人： Hyundai Motor Company ,  Kia Motors Corporation ,  Ewha University - Industry Collaboration Foundation

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

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.

公开(公告)号：US11190761B2

公开(公告)日：2021-11-30

申请号：US17267182

申请日：2020-06-15

申请人： Hyundai Motor Company ,  Kia Motors Corporation ,  Ewha University—Industry Collaboration Foundation

发明人： Je Won Kang ,  Sang Hyo Park ,  Seung Wook Park ,  Wha Pyeong Lim

IPC分类号： H04N19/107 ,  H04N19/184 ,  H04N19/70 ,  H04N19/176 ,  H04N19/513

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.

公开(公告)号：US11589065B2

公开(公告)日：2023-02-21

申请号：US17415489

申请日：2020-06-24

申请人： Hyundai Motor Company ,  Kia Motors Corporation ,  Ewha University—Industry Collaboration Foundation

发明人： Je Won Kang ,  Sang Hyo Park ,  Seung Wook Park ,  Wha Pyeong Lim

IPC分类号： H04N19/44 ,  H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/70 ,  H04N19/176

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.

公开(公告)号：US20210409694A1

公开(公告)日：2021-12-30

申请号：US17473296

申请日：2021-09-13

申请人： Hyundai Motor Company ,  Kia Motors Corporation ,  Ewha University - Industry Collaboration Foundation

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

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.

公开(公告)号：US11765382B2

公开(公告)日：2023-09-19

申请号：US17875104

申请日：2022-07-27

申请人： Hyundai Motor Company ,  Kia Motors Corporation ,  Ewha University-Industry Collaboration Foundation

发明人： Je Won Kang ,  Sang Hyo Park ,  Seung Wook Park ,  Wha Pyeong Lim

IPC分类号： H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70 ,  H04N19/513 ,  H04N19/139 ,  H04N19/577

CPC分类号： H04N19/521 ,  H04N19/105 ,  H04N19/132 ,  H04N19/139 ,  H04N19/176 ,  H04N19/577 ,  H04N19/70

摘要： A coding tool is provided to improve the compression performance of inter prediction and is used at the encoder/decoder side to adjust the correction of a motion vector based on a high level syntax. In addition, a method is provided for simply performing an integer sample search step of searching for an integer offset and a fractional sample refinement step of searching for a sub-pixel offset in relation to motion vector refinement among coding tools.

公开(公告)号：US11683483B2

公开(公告)日：2023-06-20

申请号：US17473365

申请日：2021-09-13

申请人： Hyundai Motor Company ,  Kia Motors Corporation ,  Ewha University—Industry Collaboration Foundation

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.

公开(公告)号：US20220368940A1

公开(公告)日：2022-11-17

申请号：US17875159

申请日：2022-07-27

申请人： Hyundai Motor Company ,  Kia Motors Corporation ,  Ewha University-Industry Collaboration Foundation

发明人： Je Won Kang ,  Sang Hyo Park ,  Seung Wook Park ,  Wha Pyeong Lim

IPC分类号： H04N19/513 ,  H04N19/105 ,  H04N19/132 ,  H04N19/139 ,  H04N19/176 ,  H04N19/577 ,  H04N19/70

摘要： A coding tool is provided to improve the compression performance of inter prediction and is used at the encoder/decoder side to adjust the correction of a motion vector based on a high level syntax. In addition, a method is provided for simply performing an integer sample search step of searching for an integer offset and a fractional sample refinement step of searching for a sub-pixel offset in relation to motion vector refinement among coding tools.

公开(公告)号：US20220368937A1

公开(公告)日：2022-11-17

申请号：US17868990

申请日：2022-07-20

申请人： Hyundai Motor Company ,  Kia Motors Corporation ,  Ewha University - Industry Collaboration Foundation

发明人： Je Won Kang ,  Seung Wook Park ,  Wha Pyeong Lim

IPC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.

公开(公告)号：US11284073B2

公开(公告)日：2022-03-22

申请号：US17276540

申请日：2020-07-08

申请人： Hyundai Motor Company ,  Kia Motors Corporation ,  Ewha University—Industry Collaboration Foundation

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.