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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：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：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：EP3923582A1
公开(公告)日：2021-12-15
申请号：EP20769207.0
申请日：2020-03-06
发明人： TAKEHARA, Hideki , NAKAMURA, Hiroya , SAKAZUME, Satoru , FUKUSHIMA, Shigeru , KUMAKURA, Toru , KURASHIGE, Hiroyuki
摘要： There is provided a technique including: a merging candidate constructor structured to construct a merging candidate list including merging candidates having a maximum number of merging candidates including spatial merging candidates; a normal merging candidate selector structured to select a normal merging candidate that is uni-prediction or bi-prediction from the merging candidate list based on a merge index; and a triangle merging candidate selector structured to select a first triangle merging candidate that is uni-prediction from the merging candidate list based on a first triangle merge index and select a second triangle merging candidate that is uni-prediction based on a second triangle merge index, in which a first maximum number of triangle merging candidates regarding the first triangle merge index is the same as the maximum number of merging candidates.
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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：EP4407993A2
公开(公告)日：2024-07-31
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： H04N19/70
CPC分类号： H04N19/52 , H04N19/70 , H04N19/537
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：EP3989545A1
公开(公告)日：2022-04-27
申请号：EP20826811.0
申请日：2020-06-19
发明人： TAKEHARA, Hideki , NAKAMURA, Hiroya , SAKAZUME, Satoru , FUKUSHIMA, Shigeru , KUMAKURA, Toru , KURASHIGE, Hiroyuki
IPC分类号： H04N19/105 , H04N19/139 , H04N19/176 , H04N19/593
摘要： A picture coding device includes: a block vector candidate derivation unit that derives block vector candidates of a target block in a target picture from coding information stored in coding information storage memory; a selector that selects a selected block vector from the block vector candidates; and a reference position correction unit that performs a correction regarding a reference block to be referred to by the selected block vector so that a reference position of the reference block is to be corrected to refer to an inside of a referenceable region, in which a decoded sample in the target picture is acquired from decoded picture memory as a prediction value of the target block based on the reference position of the reference block.
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