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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：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：EP4407993A3
公开(公告)日：2024-10-16
申请号：EP24181061.3
申请日：2020-03-06
发明人： FUKUSHIMA, Shigeru , TAKEHARA, Hideki , NAKAMURA, Hiroya , SAKAZUME, Satoru , KUMAKURA, Toru , KURASHIGE, Hiroyuki
IPC分类号： H04N19/52 , H04N19/537 , H04N19/70
摘要： There is provided a technique that includes a merging candidate list constructor that constructs a merging candidate list including spatial merging candidates, and a triangle merging candidate selector that selects, from the merging candidate list, a first triangle merging candidate that is uni-prediction and a second triangle merging candidate that is uni-prediction, in which the triangle merging candidate selector derives a uni-prediction motion information candidate having a same priority in the first triangle merging candidate and the second triangle merging candidate.
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公开(公告)号：EP4351145A3
公开(公告)日：2024-05-22
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： H04N19/52 , H04N19/583 , H04N19/70
CPC分类号： H04N19/70 , H04N19/52 , H04N19/583
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：EP3905687A1
公开(公告)日：2021-11-03
申请号：EP19903738.3
申请日：2019-12-19
发明人： NAKAMURA, Hiroya , KUMAKURA, Toru , FUKUSHIMA, Shigeru , TAKEHARA, Hideki , SAKAZUME, Satoru , KURASHIGE, Hiroyuki
摘要： Technology for improving coding efficiency by performing a block split suitable for picture coding and decoding is provided. A device includes a coding information storage unit configured to store inter prediction information used in the inter prediction of a coded block in a history-based motion vector predictor candidate list, a spatial inter prediction information candidate derivation unit configured to derive a spatial inter prediction information candidate from inter prediction information of a block spatially neighboring a coding target block and set the spatial inter prediction information candidate as an inter prediction information candidate of the coding target block; and a history-based inter prediction information candidate derivation unit configured to derive a history-based inter prediction information candidate from the inter prediction information stored in the history-based motion vector predictor candidate list and set the history-based inter prediction information candidate as an inter prediction information candidate of the coding target block. The history-based inter prediction information candidate derivation unit compares a predetermined number of inter prediction information elements from latest inter prediction information within the inter prediction information stored in the history-based motion vector predictor candidate list with the spatial inter prediction information candidate and sets the inter prediction information as a history-based inter prediction information candidate when a value of the inter prediction information is different.
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公开(公告)号：EP3515079B1
公开(公告)日：2020-09-09
申请号：EP19161421.3
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：EP3697092A1
公开(公告)日：2020-08-19
申请号：EP20168284.6
申请日：2014-03-17
IPC分类号： H04N19/463 , H04N19/593 , H04N19/186
摘要： In a picture coding device for coding picture signals including a brightness signal and a color-difference signal in a block unit using intra-prediction and coding information regarding an intra-prediction mode, when aspect ratios of pixels of the brightness signal and the color-difference signal are different from each other, a bitstream generator 113 converts a mode number of a first intra-color-difference prediction mode used when the aspect ratios are equal to each other into a scaled mode number and derives a second intra-color-difference prediction mode used when the aspect ratios are different from each other.
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公开(公告)号：EP3697090A1
公开(公告)日：2020-08-19
申请号：EP20168272.1
申请日：2014-03-17
IPC分类号： H04N19/463 , H04N19/593 , H04N19/186
摘要： In a picture coding device for coding picture signals including a brightness signal and a color-difference signal in a block unit using intra-prediction and coding information regarding an intra-prediction mode, when aspect ratios of pixels of the brightness signal and the color-difference signal are different from each other, a bitstream generator 113 converts a mode number of a first intra-color-difference prediction mode used when the aspect ratios are equal to each other into a scaled mode number and derives a second intra-color-difference prediction mode used when the aspect ratios are different from each other.
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