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公开(公告)号：US20250063196A1
公开(公告)日：2025-02-20
申请号：US18938819
申请日：2024-11-06
Inventor： Toshiyasu SUGIO , Noritaka IGUCHI
IPC: H04N19/597 , H04N19/124
Abstract: A three-dimensional data encoding method includes: calculating coefficient values from pieces of attribute information of three-dimensional points included in point cloud data; generating a second code sequence including first information and second information, the first information indicating a total number of zero coefficient values consecutive in a first code sequence in which the coefficient values are arranged, the second information indicating whether each of the coefficient values is 0, the zero coefficient values being included in the coefficient values and having a value of 0; and generating a bitstream including the second code sequence.
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公开(公告)号：US20250014229A1
公开(公告)日：2025-01-09
申请号：US18891598
申请日：2024-09-20
Inventor： Toshiyasu SUGIO , Noritaka IGUCHI
Abstract: A three-dimensional data encoding method includes: obtaining third point cloud data that is a combination of first point cloud data and second point cloud data, and includes geometry information of each of three-dimensional points included in the third point cloud data, and identification information indicating which of the first point cloud data and the second point cloud data each of the three-dimensional points belongs to; and generating encoded data by encoding the third point cloud data obtained. In the generating, identification information of each of the three-dimensional points is encoded as attribute information.
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公开(公告)号：US20240422318A1
公开(公告)日：2024-12-19
申请号：US18813469
申请日：2024-08-23
Inventor： Takahiro NISHI , Toshiyasu SUGIO , Noritaka IGUCHI
IPC: H04N19/13 , H04N19/597 , H04N19/91
Abstract: A decoding method includes: determining a numerical range based on whether intra prediction or inter prediction is to be used to decode encoded first information of a current three-dimensional point; and switching a context between a first context and a second context to entropy-decode the encoded first information, based on whether an absolute value of decoded second information of the current three-dimensional point is included in the numerical range determined.
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公开(公告)号：US20240386613A1
公开(公告)日：2024-11-21
申请号：US18787103
申请日：2024-07-29
Inventor： Toshiyasu SUGIO , Noritaka Iguchi
IPC: G06T9/00 , H04N19/12 , H04N19/167 , H04N19/17 , H04N19/184 , H04N19/33
Abstract: A three-dimensional data encoding method includes: (i) when a number of three-dimensional points included in point cloud data to be encoded is n that is greater than a predetermined number, n being an integer greater than or equal to 2, calculating an encoding coefficient by generating a hierarchical structure in which each of n pieces of attribute information on the three-dimensional points is sorted into one of a higher frequency component and a lower frequency component to be layered, and generating a bitstream including the encoding coefficient calculated in the calculating; and (ii) when a number of three-dimensional points included in the point cloud data is m that is smaller than or equal to the predetermined number, m being an integer greater than or equal to 1, generating a bitstream in accordance with m pieces of attribute information on the three-dimensional points without generating a hierarchy structure.
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公开(公告)号：US20240155128A1
公开(公告)日：2024-05-09
申请号：US18410431
申请日：2024-01-11
Inventor： Toshiyasu SUGIO , Noritaka IGUCHI
IPC: H04N19/124 , G06T9/40 , G06T17/00
CPC classification number: H04N19/124 , G06T9/40 , G06T17/005 , G06T2210/08
Abstract: A three-dimensional data encoding method includes: (i) in a first case where a layered structure is generated by classifying three-dimensional points into layers: encoding attribute information for the three-dimensional points based on the layered structure; and generating a bitstream including layer information utilized for the generation of the layered structure; and (ii) in a second case where the three-dimensional points are not classified: encoding attribute information for the three-dimensional points; and generating a bitstream not including the layer information.
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Patent Agency Ranking
公开(公告)号：US20240129556A1
公开(公告)日：2024-04-18
申请号：US18532111
申请日：2023-12-07
Inventor： Toshiyasu SUGIO , Tatsuya KOYAMA
IPC: H04N19/96 , G06T9/40 , H04N19/107 , H04N19/149 , H04N19/152 , H04N19/91
CPC classification number: H04N19/96 , G06T9/40 , H04N19/107 , H04N19/149 , H04N19/152 , H04N19/91
Abstract: A three-dimensional data encoding method includes encoding information of a current node included in an N-ary tree structure of three-dimensional points included in three-dimensional data, where N is an integer greater than or equal to 2. In the encoding, reference to information of a first node included in neighboring nodes spatially neighboring the current node is permitted, and reference to information of a second node included in the neighboring nodes is prohibited, the first node having a same parent node as the current node, the second node having a different parent node from the parent node of the current node.
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公开(公告)号：US20230353783A1
公开(公告)日：2023-11-02
申请号：US18219800
申请日：2023-07-10
Inventor： Noritaka IGUCHI , Toshiyasu SUGIO
IPC: H04N19/597 , H04N19/119 , H04N19/46
CPC classification number: H04N19/597 , H04N19/119 , H04N19/46
Abstract: A three-dimensional data encoding method includes: encoding divided data items to generate encoded data items each corresponding to a respective one of the divided data items, the divided data items being included in subspaces obtained by dividing a current space including three-dimensional points, the divided data items each including one or more three-dimensional points among the three-dimensional points; and generating a bitstream including the encoded data items and control information items each corresponding to a respective one of the encoded data items. Each of the control information items includes a first identifier and a second identifier. The first identifier indicates a subspace corresponding to an encoded data item corresponding to the control information item, and the second identifier indicates a divided data item corresponding to the encoded data item corresponding to the control information item.
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公开(公告)号：US20230353782A1
公开(公告)日：2023-11-02
申请号：US18218313
申请日：2023-07-05
Inventor： Noritaka IGUCHI , Toshiyasu SUGIO
IPC: H04N19/597 , H04N19/124 , H04N19/146 , H04N19/184
CPC classification number: H04N19/597 , H04N19/124 , H04N19/146 , H04N19/184
Abstract: A three-dimensional data encoding method includes: encoding pieces of attribute information of respective three-dimensional points, using parameters; and generating a bitstream including the pieces of attribute information encoded, control information, and pieces of first attribute control information. The control information corresponds to the pieces of attribute information and includes pieces of type information each indicating a type of different attribute information, the pieces of first attribute control information correspond one-to-one with the pieces of attribute information, and each of the pieces of first attribute control information includes first identification information indicating that the first attribute control information is associated with one of the pieces of type information.
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公开(公告)号：US20230351763A1
公开(公告)日：2023-11-02
申请号：US18218251
申请日：2023-07-05
Inventor： Takahiro NISHI , Tadamasa TOMA , Toshiyasu SUGIO
CPC classification number: G06V20/56 , G06T7/70 , G06T15/20 , G06V10/462 , G06V20/647 , G06T2207/30252
Abstract: A data generator which achieves further improvement includes circuitry and memory connected to the circuitry. The circuitry, in operation: obtains sensing data from each of a plurality of moving bodies that includes a plurality of sensors, the sensing data being configured based on results of sensing by the plurality of sensors; and generates synthesized data by mapping the sensing data of the moving body into a virtual space, and when generating the synthesized data, determines a position of the sensing data to be mapped into the virtual space, based at least on a position of the moving body in a real space corresponding to the sensing data.
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公开(公告)号：US20230344983A1
公开(公告)日：2023-10-26
申请号：US18214839
申请日：2023-06-27
Inventor： Toshiyasu SUGIO , Noritaka IGUCHI
IPC: H04N19/103 , H04N19/136 , H04N19/184
CPC classification number: H04N19/103 , H04N19/136 , H04N19/184
Abstract: A three-dimensional data encoding method of encoding three-dimensional points includes: calculating a new predicted value as a predicted value, using attribute information items of one or more second three-dimensional points neighboring a first three-dimensional point, and assigning the predicted value to at least one prediction mode among two or more prediction modes, the new predicted value being used for calculating an attribute information item of the first three-dimensional point; selecting one prediction mode from the two or more prediction modes; calculating a prediction residual which is a difference between the attribute information item of the first three-dimensional point and the predicted value of the one prediction mode selected; and generating a bitstream including the one prediction mode and the prediction residual.
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