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公开(公告)号：US11328479B2
公开(公告)日：2022-05-10
申请号：US16855316
申请日：2020-04-22
发明人： Zhen Peng Bian , Pongsak Lasang , Toshiyasu Sugio , Toru Matsunobu , Satoshi Yoshikawa , Tatsuya Koyama
摘要： A generation device includes: a communication interface via which two-dimensional (2D) images are to be received, the 2D images having been generated by photographing a space from different viewpoints with at least one camera; and a processor connected to the communication interface and configured to determine, according to the 2D images, a matching pattern to match feature points included in two pictures among the 2D images, match the feature points according to the matching pattern in order to generate first three-dimensional (3D) points, the first 3D points indicating respective first positions in the space, generate second 3D point based on the 2D images, the second 3D point indicating a second position in the space, and generate a 3D model of the space based on the first 3D points and the second 3D point.
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102.发明授权公开(公告)号：US11238648B2
公开(公告)日：2022-02-01
申请号：US16860741
申请日：2020-04-28
发明人： Tatsuya Koyama , Takahiro Nishi , Toshiyasu Sugio , Tadamasa Toma , Satoshi Yoshikawa , Toru Matsunobu
摘要： A display method is a display method performed by a display device that operates in conjunction with a mobile object, and includes: determining which one of first surrounding information, which is video showing a surrounding condition of the mobile object and is generated using two-dimensional information, and second surrounding information, which is video showing the surrounding condition of the mobile object and is generated using three-dimensional data, is to be displayed, based on a driving condition of the mobile object; and displaying the one of the first surrounding information and the second surrounding information that is determined to be displayed.
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公开(公告)号：US11206426B2
公开(公告)日：2021-12-21
申请号：US17126848
申请日：2020-12-18
发明人： Toshiyasu Sugio
IPC分类号： H04N19/597 , H04N19/105 , H04N19/169 , H04N19/46 , H04N19/96
摘要： A three-dimensional data encoding method includes: (i) when a first flag indicates a first value, creating a first occupancy pattern indicating occupancy states of second neighboring nodes including a first neighboring node having a parent node different from a parent node of a current node included in an N-ary tree structure of three-dimensional points included in three-dimensional data, and determining whether first encoding is usable based on the first occupancy pattern, the first encoding being for encoding pieces of position information of three-dimensional points included in the current node without dividing the current node into child nodes; (ii) when the first flag indicates a second value, creating a second occupancy pattern indicating occupancy states of third neighboring nodes excluding the first neighboring node, and determining whether the first encoding is usable based on the second occupancy pattern; and (iii) generating a bitstream including the first flag.
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公开(公告)号：US11197027B2
公开(公告)日：2021-12-07
申请号：US17142794
申请日：2021-01-06
发明人： Chung Dean Han , Pongsak Lasang , Chi Wang , Noritaka Iguchi , Toshiyasu Sugio
IPC分类号： H04N19/597 , H04N19/70 , G06T9/00
摘要： A three-dimensional data encoding method includes: generating a bitstream by encoding subspaces included in a current space in which three-dimensional points are included. The bitstream includes encoded data respectively corresponding to the subspaces. In the generating of the bitstream, a list of information about the subspaces is stored in first control information included in the bitstream. The subspaces are respectively associated with identifiers assigned to the subspaces, and the first control information is common to the encoded data. Each of the identifiers assigned to the subspaces respectively corresponding to the encoded data is stored in a header of a corresponding one of the encoded data.
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公开(公告)号：US11146828B2
公开(公告)日：2021-10-12
申请号：US16855288
申请日：2020-04-22
发明人： Pongsak Lasang , Toshiyasu Sugio , Tatsuya Koyama
摘要： A three-dimensional data encoding method includes: determining whether to encode, using an octree structure, a current space unit among a plurality of space units included in three-dimensional data; encoding the current space unit using the octree structure, when it is determined that the current space unit is to be encoded using the octree structure; encoding the current space unit using a different method that is not the octree structure, when it is determined that the current space unit is not to be encoded using the octree structure; and appending, to a bitstream, information that indicates whether the current space unit has been encoded using the octree structure.
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公开(公告)号：US11087499B2
公开(公告)日：2021-08-10
申请号：US16211910
申请日：2018-12-06
发明人： Toshiyasu Sugio , Takahiro Nishi , Tadamasa Toma , Toru Matsunobu , Satoshi Yoshikawa , Tatsuya Koyama
摘要： A three-dimensional data encoding method includes: extracting, from first three-dimensional data, second three-dimensional data having an amount of a feature greater than or equal to a threshold; and encoding the second three-dimensional data to generate first encoded three-dimensional data. For example, the three-dimensional data encoding method may further include encoding the first three-dimensional data to generate the second encoded three-dimensional data.
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公开(公告)号：US10887585B2
公开(公告)日：2021-01-05
申请号：US14725180
申请日：2015-05-29
发明人： Toshiyasu Sugio , Takahiro Nishi , Youji Shibahara , Kyoko Tanikawa , Hisao Sasai , Toru Matsunobu
IPC分类号： H04N19/105 , H04N19/147 , H04N19/176 , H04N19/52 , H04N19/96 , H04N19/70 , H04N19/573
摘要： An image decoding method for decoding, on a block-by-block basis, image data included in a coded bitstream includes: obtaining a fixed number of merging candidates each of which is a candidate set of a prediction direction, a motion vector, and a reference picture index which are to be referenced in decoding of a current block (S303); and obtaining, from the coded bitstream, an index for identifying a merging candidate for the current block (S304), wherein the fixed number of merging candidates include: one or more first candidates each derived based on a prediction direction, a motion vector, and a reference picture index which have been used for decoding a neighboring block spatially or temporally neighboring the current block; and one or more second candidates having a predetermined fixed. The fixed number is greater than or equal to two.
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公开(公告)号：US10728561B2
公开(公告)日：2020-07-28
申请号：US14941580
申请日：2015-11-14
发明人： Toru Matsunobu , Toshiyasu Sugio , Takahiro Nishi
IPC分类号： H04N19/187 , H04N19/31 , H04N19/146 , H04N19/109 , H04N19/184 , H04N19/70
摘要： An image encoding method includes acquiring a constant bit rate or a variable bit rate, determining temporal layers for a plurality of images, and setting, in a case where the constant bit rate is selected, (1) a first bit rate type of a top temporal layer to the constant bit rate, and (2) a second bit rate type of one or more other layers to the variable bit rate. The method also includes setting, in a case where the variable bit rate is selected, both the first bit rate type of the top temporal layer and the second bit rate of the one or more layers to the variable bit rate. The method further includes encoding each of the plurality of images, prohibiting reference to the images with the temporal layers higher than each of the temporal layers that each of the images belongs to, and generating the bitstream.
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公开(公告)号：US09930336B2
公开(公告)日：2018-03-27
申请号：US15059502
申请日：2016-03-03
发明人： Hisao Sasai , Takahiro Nishi , Youji Shibahara , Toshiyasu Sugio
IPC分类号： H04N7/12 , H04N19/13 , H03M7/40 , H04N19/157 , H04N19/44 , H04N19/167 , H04N19/196
CPC分类号： H04N19/13 , H03M7/4018 , H04N19/157 , H04N19/167 , H04N19/197 , H04N19/44
摘要： An arithmetic decoding method is a method in which a context variable specifying a probability of a possible value of each of elements included in a binary string corresponding to a value of a given variable is initialized and arithmetic decoding is performed, using the context variable. The method includes: determining, from among a plurality of initialization methods as a method of initializing the context variable, an initialization method corresponding to the given variable or a group which includes the given variable; and initializing the context variable using the determined initialization method.
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公开(公告)号：US09609320B2
公开(公告)日：2017-03-28
申请号：US13924965
申请日：2013-06-24
发明人： Sue Mon Thet Naing , Chong Soon Lim , Kyaw Kyaw Win , Hai Wei Sun , Viktor Wahadaniah , Takahiro Nishi , Hisao Sasai , Youji Shibahara , Toshiyasu Sugio , Kyoko Tanikawa , Toru Matsunobu , Kengo Terada
IPC分类号： H04N19/00 , H04N19/52 , H04N19/51 , H04N19/70 , H04N19/172 , H04N19/46 , H04N19/107
CPC分类号： H04N19/52 , H04N19/105 , H04N19/107 , H04N19/172 , H04N19/174 , H04N19/184 , H04N19/46 , H04N19/51 , H04N19/70
摘要： An image decoding method includes: obtaining, from a bitstream, a first temporal motion vector prediction flag, which is a temporal motion vector prediction flag indicating whether or not temporal motion vector prediction is to be used, indicating that temporal motion vector prediction is not to be used on a first picture; decoding the first picture without using the temporal motion vector prediction; and decoding a second picture which follows the first picture in decoding order, with referring to a motion vector of a picture preceding the first picture in decoding order being prohibited.
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