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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：US12289470B2
公开(公告)日：2025-04-29
申请号：US18390138
申请日：2023-12-20
Inventor： Toshiyasu Sugio , Noritaka Iguchi , Pongsak Lasang , Chi Wang , Chung Dean Han
IPC: H04N19/597 , H04N19/167 , H04N19/182 , H04N19/46 , H04N19/85 , G01S17/89 , H04N13/246 , H04N13/282
Abstract: A three-dimensional data encoding method includes: obtaining geometry information which includes first three-dimensional positions on a measurement target, and is generated by a measurer that radially emits an electromagnetic wave in different directions and obtains a reflected wave which is the electromagnetic wave that is reflected by the measurement target; generating a two-dimensional image including first pixels corresponding to the directions, based on the geometry information; and encoding the two-dimensional image to generate a bitstream. Each of the first pixels has a pixel value indicating a first three-dimensional position or attribute information of a three-dimensional point which is included in a three-dimensional point cloud and corresponds to a direction to which the first pixel corresponds among the directions.
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公开(公告)号：US12154299B2
公开(公告)日：2024-11-26
申请号：US17504809
申请日：2021-10-19
Inventor： Toshiyasu Sugio , Noritaka Iguchi , Chung Dean Han , Pongsak Lasang
IPC: G06T9/00 , H04N19/124 , H04N19/14 , H04N19/184 , H04N19/196 , H04N19/30
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 to generate quantization values; and generating a bitstream including the quantization values. The three-dimensional points corresponding to the coefficient values belong to one layer among one or more layers. Each of a predetermined number of layers among the one or more layers is assigned a quantization parameter for the layer. In the quantizing, (i) when a quantization parameter is assigned to a layer to which each of the coefficient values belongs, the coefficient value is quantized using the quantization parameter, and (ii) when the quantization parameter is not assigned to a layer to which each of the coefficient values belongs, the coefficient value is quantized using a quantization parameter assigned to one layer among the predetermined number of the layers.
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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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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：US11936910B2
公开(公告)日：2024-03-19
申请号：US18091554
申请日：2022-12-30
Inventor： Chi Wang , Pongsak Lasang , Chung Dean Han , Toshiyasu Sugio
IPC: H04N19/597 , H04N19/103 , H04N19/136 , H04N19/91 , H04N19/96
CPC classification number: H04N19/597 , H04N19/103 , H04N19/136 , H04N19/91 , H04N19/96
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, first information is encoded, the first information indicating a range for one or more referable neighboring nodes among neighboring nodes spatially neighboring the current node, and the current node is encoded with reference to a neighboring node within the range.
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公开(公告)号：US11575936B2
公开(公告)日：2023-02-07
申请号：US17065019
申请日：2020-10-07
Inventor： Chi Wang , Pongsak Lasang , Chung Dean Han , Toshiyasu Sugio
IPC: H04N19/597 , H04N19/136 , H04N19/103 , H04N19/96 , 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, first information is encoded, the first information indicating a range for one or more referable neighboring nodes among neighboring nodes spatially neighboring the current node, and the current node is encoded with reference to a neighboring node within the range.
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公开(公告)号：US11553181B2
公开(公告)日：2023-01-10
申请号：US17150329
申请日：2021-01-15
Inventor： Chung Dean Han , Pongsak Lasang , Chi Wang , Noritaka Iguchi , Toshiyasu Sugio
IPC: H04N19/124 , H04N19/186
Abstract: A three-dimensional data encoding method includes: quantizing geometry information of each of three-dimensional points, using a first quantization parameter; quantizing a first luminance using a second quantization parameter and quantizing a first chrominance using a third quantization parameter, the first luminance and the first chrominance indicating a first color among attribute information of each of the three dimensional points; and generating a bitstream including the geometry information quantized, the first luminance quantized, the first chrominance quantized, the first quantization parameter, the second quantization parameter, and a first difference between the second quantization parameter and the third quantization parameter.
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