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公开(公告)号：EP3993421A1
公开(公告)日：2022-05-04
申请号：EP20832279.2
申请日：2020-06-25
发明人： KUMAKURA, Toru , FUKUSHIMA, Shigeru , TAKEHARA, Hideki , NAKAMURA, Hiroya , SAKAZUME, Satoru , KURASHIGE, Hiroyuki
IPC分类号： H04N19/52 , H04N19/593 , H04N19/70
摘要： A picture coding device includes: a block vector candidate derivation unit that derives block vector candidates of a coding target block in a coding target picture from coding information stored in a coding information storage memory; a selector that selects a selected block vector from the block vector candidates; a storage that stores coded pictures of a predetermined number of intra block copy standard blocks immediately before the coding target block; and a reference region boundary correction unit that removes a coded picture of one intra block copy standard block in the storage from a referenceable region after completion of a coding process of the coding target block, and determines whether an upper left position and a lower right position of a reference block indicated by the selected block vector are both included in the referenceable region.
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公开(公告)号：EP3937495A1
公开(公告)日：2022-01-12
申请号：EP20769712.9
申请日：2020-03-06
发明人： FUKUSHIMA, Shigeru , KUMAKURA, Toru , TAKEHARA, Hideki , NAKAMURA, Hiroya , SAKAZUME, Satoru , KURASHIGE, Hiroyuki
IPC分类号： H04N19/52 , H04N19/583 , H04N19/70
摘要： There is provided a technique that includes a triangle merging candidate list constructor structured to construct a triangle merging candidate list including spatial merging candidates, a first triangle merging candidate selector structured to select, from the triangle merging candidate list, a first triangle merging candidate that is uni-prediction, and a second triangle merging candidate selector structured to select, from the triangle merging candidate list, a second triangle merging candidate that is uni-prediction, in which in a region where motion compensation by weighted averaging by the first triangle merging candidate and the second triangle merging candidate is performed, uni-prediction motion information of one of the first triangle merging candidate or the second triangle merging candidate is saved.
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公开(公告)号：EP3879834A1
公开(公告)日：2021-09-15
申请号：EP21153604.0
申请日：2012-05-30
IPC分类号： H04N19/52 , H04N19/513
摘要： A motion vector predictor candidate generation unit 120 derives a plurality of motion vector predictor candidates by prediction from first coded prediction blocks neighboring a prediction block subject to coding within the same picture as the prediction block subject to coding, or from a second coded prediction block located at the same position as or in the neighborhood of the prediction block subject to coding in a picture different from that of the prediction block subject to coding, and adds the derived motion vector predictor candidates in a motion vector predictor candidate. The motion vector predictor candidate generation unit 120 determines, for the purpose of obtaining a predetermined number of motion vector predictor candidates, which of first coded prediction blocks provides the motion vector from which to derive the motion vector predictor candidate, organizing the blocks in the order of priority.
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公开(公告)号：EP3515078B1
公开(公告)日：2020-09-09
申请号：EP19161418.9
申请日：2013-04-12
发明人： KUMAKURA, Toru , FUKUSHIMA, Shigeru
IPC分类号： H04N19/70 , H04N19/13 , H04N19/18 , H04N19/176
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公开(公告)号：EP3606074A1
公开(公告)日：2020-02-05
申请号：EP19198669.4
申请日：2014-03-17
IPC分类号： H04N19/463 , H04N19/593 , H04N19/186
摘要： In a picture decoding device for decoding picture signals including a brightness signal and a color-difference signal in a block unit using intra-prediction according to an intra-prediction mode, when aspect ratios of pixels of the brightness signal and the color-difference signal are different from each other, a second intra-color-difference prediction mode is obtained by converting the mode number of a first intra-color-difference angle prediction mode used when the aspect ratios are equal to each other, the conversion being done by scaling the prediction angle.
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公开(公告)号：EP4351145A2
公开(公告)日：2024-04-10
申请号：EP24158912.6
申请日：2020-03-06
发明人： FUKUSHIMA, Shigeru , KUMAKURA, Toru , TAKEHARA, Hideki , NAKAMURA, Hiroya , SAKAZUME, Satoru , KURASHIGE, Hiroyuki
IPC分类号： H04N19/70
摘要： There is provided a technique that includes a triangle merging candidate list constructor structured to construct a triangle merging candidate list including spatial merging candidates, a first triangle merging candidate selector structured to select, from the triangle merging candidate list, a first triangle merging candidate that is uni-prediction, and a second triangle merging candidate selector structured to select, from the triangle merging candidate list, a second triangle merging candidate that is uni-prediction, in which in a region where motion compensation by weighted averaging by the first triangle merging candidate and the second triangle merging candidate is performed, uni-prediction motion information of one of the first triangle merging candidate or the second triangle merging candidate is saved.
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公开(公告)号：EP4221206A1
公开(公告)日：2023-08-02
申请号：EP23172432.9
申请日：2017-06-13
发明人： FUKUSHIMA, Shigeru
IPC分类号： H04N19/119 , H04N19/136 , H04N19/176 , H04N19/192 , H04N19/196 , H04N19/46 , H04N19/70 , H04N19/96
摘要： An image encoding device adapted to segment an image into blocks and encode the image in units of blocks resulting from segmenting the image is provided. A block segmentation unit (101) recursively segments the image into rectangles of a predetermined size to generate a block subject to encoding. A bitstream generation unit (105) encodes block segmentation information of the block subject to encoding. The block segmentation unit (101) includes: a quartering unit that quarters a target block in recursive segmentation in a horizontal direction and a vertical direction to generate four blocks; and a halving unit that halves a target block in recursive segmentation in a horizontal or vertical direction to generate two blocks. When previous recursive segmentation is halving, the halving unit prohibits a target block subject to current recursive segmentation from being segmented in the same direction as a direction in which the block was segmented in the previous recursive segmentation.
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8.发明公开
公开(公告)号：EP4017002A1
公开(公告)日：2022-06-22
申请号：EP21203998.6
申请日：2017-06-13
发明人： FUKUSHIMA, Shigeru
IPC分类号： H04N19/119 , H04N19/136 , H04N19/176 , H04N19/196 , H04N19/70 , H04N19/96 , H04N19/46 , H04N19/192
摘要： An image encoding device adapted to segment an image into blocks and encode the image in units of blocks resulting from segmenting the image is provided. A block segmentation unit (101) recursively segments the image into rectangles of a predetermined size to generate a block subject to encoding. A bitstream generation unit (105) encodes block segmentation information of the block subject to encoding. The block segmentation unit (101) includes: a quartering unit that quarters a target block in recursive segmentation in a horizontal direction and a vertical direction to generate four blocks; and a halving unit that halves a target block in recursive segmentation in a horizontal or vertical direction to generate two blocks. When previous recursive segmentation is halving, the halving unit prohibits a target block subject to current recursive segmentation from being segmented in the same direction as a direction in which the block was segmented in the previous recursive segmentation.
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公开(公告)号：EP3937489A1
公开(公告)日：2022-01-12
申请号：EP20769864.8
申请日：2020-03-06
发明人： KURASHIGE, Hiroyuki , TAKEHARA, Hideki , NAKAMURA, Hiroya , SAKAZUME, Satoru , FUKUSHIMA, Shigeru , KUMAKURA, Toru
IPC分类号： H04N19/109 , H04N19/139 , H04N19/176 , H04N19/52 , H04N19/70
摘要： A normal merge mode derivation unit further includes a merging candidate selector structured to add a merge motion vector difference defined by a direction index indicating a direction and a distance index indicating a distance to a motion vector of a merging candidate list, and select one candidate from the merging candidate list as a selected merging candidate on the basis of a merge index, in which, when the motion vector of the selected merging candidate is smaller than a distance indicated by an arbitrary index of the distance index, the merging candidate selector sets a direction of a merge motion vector difference defined by the distance index indicating a larger distance than the motion vector of the selected merging candidate as a diagonal direction, or changes the distance indicated by the distance index.
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公开(公告)号：EP3879832A1
公开(公告)日：2021-09-15
申请号：EP21153596.8
申请日：2012-05-30
IPC分类号： H04N19/52 , H04N19/513
摘要： A motion vector predictor candidate generation unit 120 derives a plurality of motion vector predictor candidates by prediction from first coded prediction blocks neighboring a prediction block subject to coding within the same picture as the prediction block subject to coding, or from a second coded prediction block located at the same position as or in the neighborhood of the prediction block subject to coding in a picture different from that of the prediction block subject to coding, and adds the derived motion vector predictor candidates in a motion vector predictor candidate. The motion vector predictor candidate generation unit 120 determines, for the purpose of obtaining a predetermined number of motion vector predictor candidates, which of first coded prediction blocks provides the motion vector from which to derive the motion vector predictor candidate, organizing the blocks in the order of priority.
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