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公开(公告)号：US12100182B2
公开(公告)日：2024-09-24
申请号：US17945352
申请日：2022-09-15
Inventor： Toshiyasu Sugio , Noritaka Iguchi
Abstract: A three-dimensional data encoding method includes: calculating a prediction residual that is a difference between information of a three-dimensional point included in point cloud data and a predicted value; and generates a bitstream including first information with respect to the prediction residual, second information indicating a bit count of the first information, and third information indicating a bit count of the second information.
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公开(公告)号：US12073591B2
公开(公告)日：2024-08-27
申请号：US17403113
申请日：2021-08-16
Inventor： Toshiyasu Sugio , Noritaka Iguchi
IPC: G06T9/00 , H04N19/33 , H04N19/593
CPC classification number: G06T9/00 , H04N19/33 , H04N19/593
Abstract: A three-dimensional data encoding method includes: selecting, as one or more candidates for calculating a predicted value of attribute information of a first three-dimensional point, one or more three-dimensional points from a plurality of three-dimensional points, the one or more three-dimensional points being closest to the first three-dimensional point; calculating a predicted value using pieces of attribute information of the one or more three-dimensional points selected as the one or more candidates; calculating a prediction residual that is a difference between the attribute information of the first three-dimensional point and the predicted value calculated; and generating a bitstream, based on the prediction residual. In the selecting, when the plurality of three-dimensional points include three-dimensional points equidistant from the first three-dimensional point, the one or more candidates are selected based on a first Morton code of the first three-dimensional point.
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公开(公告)号：US12067752B1
公开(公告)日：2024-08-20
申请号：US17981789
申请日：2022-11-07
Inventor： Toshiyasu Sugio , Noritaka Iguchi
IPC: G06T9/00 , H04N19/12 , H04N19/167 , H04N19/17 , H04N19/184 , H04N19/33
CPC classification number: 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：US20240259595A1
公开(公告)日：2024-08-01
申请号：US18626825
申请日：2024-04-04
Inventor： Chong Soon LIM , Zheng Wu , Han Boon Teo , Keng Liang Loi , Chung Dean Han , Georges Nader , Farman Dumanov , Toshiyasu Sugio , Noritaka Iguchi , Takahiro Nishi
IPC: H04N19/597 , G06T17/20
CPC classification number: H04N19/597 , G06T17/20
Abstract: An encoding device including memory and a circuit. In operation, the circuit: encodes first vertex information, second vertex information, and third vertex information, the first vertex information indicating a position of a first vertex of a first triangle that is a triangle in a three-dimensional mesh and on a first plane, the second vertex information indicating a position of a second vertex of the first triangle, the third vertex information indicating a position of a third vertex of the first triangle; and encodes, as fourth vertex information indicating a position of a fourth vertex of a second triangle, (i) dihedral angle information indicating a dihedral angle formed by the first plane and a second plane and (ii) identifying information for identifying a position of a fifth vertex that is a virtual vertex of a third triangle.
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公开(公告)号：US12047605B2
公开(公告)日：2024-07-23
申请号：US17708615
申请日：2022-03-30
Inventor： Toshiyasu Sugio , Noritaka Iguchi
IPC: H04N19/597 , H04N19/103 , H04N19/136 , H04N19/159
CPC classification number: H04N19/597 , H04N19/103 , H04N19/136 , H04N19/159
Abstract: A three-dimensional data encoding method for encoding three-dimensional points having a hierarchical structure, the three-dimensional data encoding method including: setting one prediction mode out of two or more prediction modes each for calculating a predicted value of an item of first geometry information of a first three-dimensional point using one or more items of second geometry information of one or more second three-dimensional points surrounding the first three-dimensional point; calculating a predicted value of the one prediction mode set; calculating a prediction residual that is a difference between the item of first geometry information and the predicted value calculated; and generating a first bitstream including the one prediction mode set and the prediction residual. In the setting, the one prediction mode is set based on a depth of the first three-dimensional point in the hierarchical structure.
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Patent Agency Ranking
公开(公告)号：US12033363B2
公开(公告)日：2024-07-09
申请号：US18233059
申请日：2023-08-11
Inventor： Toshiyasu Sugio , Noritaka Iguchi , Chi Wang , Pongsak Lasang , Chung Dean Han
IPC: G06T9/40
CPC classification number: G06T9/40
Abstract: A three-dimensional data encoding method includes: encoding first information of a first current node or second information of a second current node, the first current node being included in an N-ary tree structure of first three-dimensional points included in a first three-dimensional point cloud, N being 2 or 4, the second current node being included in an octree structure of second three-dimensional points included in a second three-dimensional point cloud The encoding of the first information or the second information includes encoding the first information using a first encoding pattern including a pattern common to a second encoding pattern used in encoding the second information.
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公开(公告)号：US20240155142A1
公开(公告)日：2024-05-09
申请号：US18410582
申请日：2024-01-11
Inventor： Toshiyasu SUGIO , Noritaka Iguchi , Chung Dean Han , Chi Wang , Pongsak Lasang
IPC: H04N19/30 , H04N19/124 , H04N19/46 , H04N19/597
CPC classification number: H04N19/30 , H04N19/124 , H04N19/46 , H04N19/597
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; quantizing the coefficient values individually to generate quantized values; and generating a bitstream including the quantized values. Each of the coefficient values belongs to any one of layers. In the quantizing, each of the coefficient values is quantized using a quantization parameter for a layer to which the coefficient value belongs among the layers, and the bitstream includes first information and pieces of second information, the first information indicating a reference quantization parameter, the pieces of second information being for calculating quantization parameters for the layers from the reference quantization parameter.
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公开(公告)号：US11902576B2
公开(公告)日：2024-02-13
申请号：US17354206
申请日：2021-06-22
Inventor： Toshiyasu Sugio , Noritaka Iguchi
IPC: H04N19/597 , G06T3/40 , G06T9/00 , G06F18/2431 , G06V20/64
CPC classification number: H04N19/597 , G06F18/2431 , G06T3/40 , G06T9/001 , G06V20/653
Abstract: A three-dimensional data encoding method includes: classifying three-dimensional points included in point cloud data into layers, based on geometry information of the three-dimensional points; generating first information indicating whether to permit referring to, for a current three-dimensional point included in the three-dimensional points, attribute information of another three-dimensional point belonging to a same layer as the current three-dimensional point; and encoding attribute information of the current three-dimensional point to generate a bitstream, by or without referring to the attribute information of the other three-dimensional point according to the first information. The bitstream includes the first information.
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公开(公告)号：US11856154B2
公开(公告)日：2023-12-26
申请号：US17942274
申请日：2022-09-12
Inventor： Noritaka Iguchi , Toshiyasu Sugio
IPC: H04N19/597 , H04N19/46
CPC classification number: H04N19/597 , H04N19/46
Abstract: A three-dimensional data storage method includes: acquiring one or more units in which an encoded stream generated by encoding point cloud data is stored; and storing the one or more units into a file. The storing includes storing, in control information for the file, information indicating that data stored in the file is data generated by encoding the point cloud data.
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公开(公告)号：US11849166B2
公开(公告)日：2023-12-19
申请号：US17167174
申请日：2021-02-04
Inventor： Tadamasa Toma , Noritaka Iguchi , Hisaya Katou
IPC: H04N21/262 , H04N21/234 , H04N21/242 , H04N21/8547 , H04N21/858 , H04N21/236 , H04N21/2365 , H04N21/235 , H04N21/84 , H04N21/43
CPC classification number: H04N21/26283 , H04N21/2353 , H04N21/2365 , H04N21/23424 , H04N21/23614 , H04N21/242 , H04N21/43072 , H04N21/84 , H04N21/8547 , H04N21/8586
Abstract: A transmitting method according to one aspect of the present disclosure includes transmitting a first stream, the first stream including: timing update identification information id1 indicating whether or not a correspondence relationship between a first reference clock and a second reference clock has been updated, the first reference clock being used to transmit and receive the first stream, and the second reference clock being used to transmit and receive a second stream related to another content to be reproduced in synchronization with the content related to the first stream; a first time according to the first reference clock; and a second time according to the second reference clock, the second time being associated with the first time based on the updated correspondence relationship.
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