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公开(公告)号：US20230099585A1
公开(公告)日：2023-03-30
申请号：US18076665
申请日：2022-12-07
发明人： Chung Dean HAN , Pongsak LASANG , Chi WANG , Noritaka IGUCHI , Toshiyasu SUGIO
IPC分类号： H04N19/124 , H04N19/186
摘要： 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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公开(公告)号：US20220191532A1
公开(公告)日：2022-06-16
申请号：US17687846
申请日：2022-03-07
发明人： Chi WANG , Pongsak LASANG , Toshiyasu SUGIO , Tatsuya KOYAMA
IPC分类号： H04N19/46 , H04N19/597 , H04N19/96
摘要： A three-dimensional data encoding method includes: generating first information in which an N-ary tree structure of a plurality of three-dimensional points included in three-dimensional data is expressed using a first formula, where N is an integer of 2 or higher; and generating a bitstream including the first information. The first information includes pieces of three-dimensional point information each associated with a corresponding one of the plurality of three-dimensional points. The pieces of three-dimensional point information each include indexes each associated with a corresponding one of a plurality of levels in the N-ary tree structure. The indexes each indicate a subblock, among N subblocks belonging to a corresponding one of the plurality of levels, to which a corresponding one of the plurality of three-dimensional points belongs.
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公开(公告)号：US20210168400A1
公开(公告)日：2021-06-03
申请号：US17152122
申请日：2021-01-19
发明人： Chung Dean HAN , Chi WANG , Pongsak LASANG , Noritaka IGUCHI , Toshiyasu SUGIO
IPC分类号： H04N19/597 , G01C21/36 , H04N19/96
摘要： A three-dimensional data encoding method includes: combining first point cloud data and second point cloud data to generate third point cloud data; and encoding the third point cloud data to generate encoded data. The encoded data includes identification information indicating whether each of three-dimensional points included in the third point cloud data belongs to the first point cloud data or the second point cloud data.
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公开(公告)号：US20210084312A1
公开(公告)日：2021-03-18
申请号：US17105910
申请日：2020-11-27
发明人： Pongsak LASANG , Zheng WU , Chi WANG , Chung Dean HAN , Toshiyasu SUGIO
IPC分类号： H04N19/17 , H04N19/184 , H04N19/159 , G01B11/00
摘要： A three-dimensional data encoding method of encoding three-dimensional points obtained by a sensor includes: encoding local coordinate information indicating sets of local coordinates that are coordinates of the three-dimensional points and are dependent on a location of the sensor; and generating an encoded bitstream including the local coordinate information encoded and global coordinate information indicating global coordinates that are coordinates of a reference point or at least one of the three-dimensional points and are independent from the location of the sensor.
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公开(公告)号：US20240331208A1
公开(公告)日：2024-10-03
申请号：US18732970
申请日：2024-06-04
发明人： Toshiyasu SUGIO , Noritaka IGUCHI , Chi WANG , Pongsak LASANG , Chung Dean HAN
IPC分类号： G06T9/40
CPC分类号： G06T9/40
摘要： 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：US20240137561A1
公开(公告)日：2024-04-25
申请号：US18390138
申请日：2023-12-20
发明人： Toshiyasu SUGIO , Noritaka IGUCHI , Pongsak LASANG , Chi WANG , Chung Dean HAN
IPC分类号： H04N19/597 , H04N19/167 , H04N19/182 , H04N19/46 , H04N19/85
CPC分类号： H04N19/597 , H04N19/167 , H04N19/182 , H04N19/46 , H04N19/85 , H04N13/246
摘要： 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：US20230386092A1
公开(公告)日：2023-11-30
申请号：US18233059
申请日：2023-08-11
发明人： Toshiyasu SUGIO , Noritaka IGUCHI , Chi WANG , Pongsak LASANG , Chung Dean HAN
IPC分类号： G06T9/40
CPC分类号： G06T9/40
摘要： 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：US20230162401A1
公开(公告)日：2023-05-25
申请号：US18097682
申请日：2023-01-17
发明人： Chi WANG , Pongsak LASANG , Toshiyasu SUGIO , Takahiro NISHI , Toru MATSUNOBU
IPC分类号： G06T9/00
CPC分类号： G06T9/00
摘要： A three-dimensional data encoding method includes: generating predicted position information using position information on three-dimensional points included in three-dimensional reference data associated with a time different from a time associated with current three-dimensional data; and encoding position information on three-dimensional points included in the current three-dimensional data, using the predicted position information.
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公开(公告)号：US20240107064A1
公开(公告)日：2024-03-28
申请号：US18518762
申请日：2023-11-24
发明人： Chung Dean HAN , Chi WANG , Pongsak LASANG , Noritaka IGUCHI , Toshiyasu SUGIO
IPC分类号： H04N19/597 , G01C21/36 , H04N19/96
CPC分类号： H04N19/597 , G01C21/3638 , H04N19/96
摘要： A three-dimensional data encoding method includes: combining first point cloud data and second point cloud data to generate third point cloud data; and encoding the third point cloud data to generate encoded data. The encoded data includes identification information indicating whether each of three-dimensional points included in the third point cloud data belongs to the first point cloud data or the second point cloud data.
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公开(公告)号：US20240080460A1
公开(公告)日：2024-03-07
申请号：US18388973
申请日：2023-11-13
发明人： Pongsak LASANG , Zheng WU , Chi WANG , Chung Dean HAN , Toshiyasu SUGIO
IPC分类号： H04N19/17 , G01B11/00 , H04N19/159 , H04N19/184
CPC分类号： H04N19/17 , G01B11/002 , H04N19/159 , H04N19/184 , H04N19/593
摘要： A three-dimensional data encoding method of encoding three-dimensional points obtained by a sensor includes: encoding local coordinate information indicating sets of local coordinates that are coordinates of the three-dimensional points and are dependent on a location of the sensor; and generating an encoded bitstream including the local coordinate information encoded and global coordinate information indicating global coordinates that are coordinates of a reference point or at least one of the three-dimensional points and are independent from the location of the sensor.
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