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公开(公告)号：US12200254B2
公开(公告)日：2025-01-14
申请号：US17333777
申请日：2021-05-28
Inventor： Toshiyasu Sugio , Noritaka Iguchi , Chung Dean Han , Chi Wang , Pongsak Lasang
IPC: G06T9/00 , G06F18/25 , G06T9/40 , G06V20/64 , H04N19/597
Abstract: A three-dimensional data encoding method includes: generating combined point cloud data by combining pieces of point cloud data; and generating a bitstream by encoding the combined point cloud data. The bitstream includes (i) first information indicating a maximum number of duplicated points that are included in each of the pieces of point cloud data and are three-dimensional points having same geometry information, and (ii) pieces of second information corresponding one-to-one with point indexes and each indicating which of the pieces of point cloud data three-dimensional points having a corresponding one of the point indexes belong to, the point indexes being indexes to which values a total number of which is equal to the maximum number are assigned, and being used for identifying duplicated points belonging to same point cloud data.
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公开(公告)号：US12192561B2
公开(公告)日：2025-01-07
申请号：US18228051
申请日：2023-07-31
Inventor： Tadamasa Toma , Noritaka Iguchi , Takahiro Nishi , Hisaya Katou
IPC: H04N21/43 , H04H20/18 , H04H20/24 , H04H20/93 , H04H60/13 , H04N21/242 , H04N21/462 , H04N21/61 , H04N21/8547
Abstract: A transmitting method for transmitting contents using a broadcast wave and a communication path comprises: including content information in application control information when transmitting the contents using both the broadcast wave and the communication path, the content information being information for synchronizing a content transmitted by using the broadcast wave with a content transmitted by using the communication path at a reception side that receives the contents and being related to the content transmitted by using the communication path; and transmitting the application control information by using at least the broadcast wave in the broadcast wave and the communication path. As a result, a contents transmitting method is provided for enabling a quick access to contents through communication when the contents are reproduced by a combination of broadcast and communication on the receiving side.
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公开(公告)号：US12108092B2
公开(公告)日：2024-10-01
申请号：US18226930
申请日：2023-07-27
Inventor： Noritaka Iguchi , Tadamasa Toma
IPC: H04N21/231 , H04H60/40 , H04J3/06 , H04L65/611 , H04N21/234 , H04N21/235 , H04N21/2365 , H04N21/43 , H04N21/434 , H04N21/63 , H04N21/845
CPC classification number: H04N21/231 , H04H60/40 , H04J3/0661 , H04L65/611 , H04N21/234 , H04N21/235 , H04N21/2365 , H04N21/43072 , H04N21/4347 , H04N21/631 , H04N21/8456
Abstract: A transmitting method stores data making up a coded stream into a predetermined data unit and transmits the stored data in the predetermined data unit. The transmitting method further generates presentation time information indicating a presentation time of the predetermined data unit, based on reference time information received from an external source; and transmits the predetermined data unit, first control information which includes the generated presentation time information, and second control information which includes leap second information indicating whether or not the presentation time information is a time that is before a leap second adjustment. A receiving method receives the predetermined data unit, first control information, and second control information; and reproduces the received predetermined data unit based on the first and second control information that are received.
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公开(公告)号：US12087023B2
公开(公告)日：2024-09-10
申请号：US17496230
申请日：2021-10-07
Inventor： Toshiyasu Sugio , Noritaka Iguchi , Pongsak Lasang , Chung Dean Han
IPC: G06T9/00 , G06F5/01 , H04N19/597 , H04N19/63
CPC classification number: G06T9/001 , G06F5/01 , G06T9/007 , H04N19/63 , H04N19/597
Abstract: A three-dimensional data encoding method includes: transforming pieces of attribute information of three-dimensional points included in point cloud data into coefficient values; and encoding the coefficient values to generate a bitstream. In the transforming, weighting calculation is performed hierarchically to generate the coefficient values belonging to one of layers, the weighting calculation separating each of the pieces of attribute information into a high-frequency component and a low-frequency component. In the weighting calculation, the weighting calculation is performed using weights fixed or not fixed in the layers. The bitstream includes first information indicating whether to fix the weights in the layers.
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公开(公告)号：US12047603B2
公开(公告)日：2024-07-23
申请号：US17405329
申请日：2021-08-18
Inventor： Noritaka Iguchi , Toshiyasu Sugio
IPC: H04N19/597 , H04N19/119 , H04N19/184 , H04N19/70 , H04N19/88
CPC classification number: H04N19/597 , H04N19/119 , H04N19/184 , H04N19/70 , H04N19/88
Abstract: A three-dimensional data encoding method includes: dividing point cloud data into pieces of sub point cloud data by dividing a three-dimensional space into subspaces; shifting each of the pieces of sub point cloud data in accordance with a predetermined shift amount; and generating a bitstream by encoding the pieces of sub point cloud data shifted. The bitstream includes first control information common to the pieces of sub point cloud data, and pieces of second control information for each of the pieces of sub point cloud data, the first control information including first information about a shift amount of each of the pieces of sub point cloud data.
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Patent Agency Ranking
公开(公告)号：US11909992B2
公开(公告)日：2024-02-20
申请号：US17390194
申请日：2021-07-30
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：US11776165B2
公开(公告)日：2023-10-03
申请号：US17228042
申请日：2021-04-12
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：US11756235B2
公开(公告)日：2023-09-12
申请号：US17896433
申请日：2022-08-26
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：US11582483B2
公开(公告)日：2023-02-14
申请号：US17350486
申请日：2021-06-17
Inventor： Noritaka Iguchi , Toshiyasu Sugio
IPC: H04N19/119 , H04N19/597 , H04N19/46
Abstract: A three-dimensional data encoding method includes: shifting point cloud data indicating three-dimensional positions in a three-dimensional space by a first shift amount; dividing the point cloud data into pieces of sub point cloud data; shifting each of the pieces of sub point cloud data by a second shift amount based on a position of one of the subspaces that includes the sub point cloud data, the pieces of sub point cloud data being included in the point cloud data shifted by the first shift amount; and encoding the pieces of sub point cloud data shifted, to generate a bitstream. The bitstream includes first shift information for calculating the first shift amount, and pieces of second shift information each for calculating a corresponding one of second shift amounts by which the pieces of sub point cloud data are shifted and each of which is the second shift amount.
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公开(公告)号：US11461934B2
公开(公告)日：2022-10-04
申请号：US17154570
申请日：2021-01-21
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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