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公开(公告)号：US12200245B2
公开(公告)日：2025-01-14
申请号：US18126641
申请日：2023-03-27
Inventor： Takahiro Nishi , Toshiyasu Sugio , Noritaka Iguchi
IPC: H04N19/52 , H04N19/159 , H04N19/597 , H04N19/70
Abstract: A three-dimensional data encoding method includes: parsing a first syntax to determine, for each of at least one prediction tree in a slice, whether inter prediction or intra prediction is to be performed on the prediction tree, the prediction tree containing at least one three-dimensional point; and parsing a second syntax to determine a motion compensation mode to be performed on the prediction tree when the inter prediction is to be performed on the prediction tree.
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公开(公告)号：US12165367B2
公开(公告)日：2024-12-10
申请号：US17392580
申请日：2021-08-03
Inventor： Toshiyasu Sugio , Noritaka Iguchi , Pongsak Lasang , Chung Dean Han
Abstract: A three-dimensional data encoding method of encoding three-dimensional points includes: re-ordering, in a re-ordered data order, pieces of attribute information of the three-dimensional points arranged in a predetermined order; encoding the pieces of attribute information re-ordered in the re-ordering, in accordance with the re-ordered data order; and generating a bitstream including (i) order information indicating the predetermined order and (ii) the pieces of attribute information encoded in the encoding.
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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：US12131509B2
公开(公告)日：2024-10-29
申请号：US17690671
申请日：2022-03-09
Inventor： Chung Dean Han , Pongsak Lasang , Pradit Mittrapiyanuruk , Keng Liang Loi , Noritaka Iguchi , Toshiyasu Sugio
IPC: H04N13/161 , G06T9/00 , G06T9/40 , H04N19/17 , G06T17/00 , H04N7/24 , H04N19/96 , H04N21/236 , H04N21/81
CPC classification number: G06T9/40 , G06T9/00 , H04N19/17 , G06T17/00 , G06T17/005 , G06T2200/04 , G06T2207/10028 , G06T2207/20021 , H04N2007/243 , H04N13/161 , H04N19/96 , H04N21/23614 , H04N21/8146 , H04N21/816
Abstract: A three-dimensional data encoding method includes: encoding three-dimensional points each located in any one of a plurality of regions, on a per region basis, to generate encoded three-dimensional points; generating connectivity information generated based on a relationship between a first region among the plurality of regions and second regions aside from the first region among the plurality of regions, the connectivity information including (i) tile information indicating values each uniquely assigned to a different one of the plurality of regions and (ii) relation information indicating that the first region and one of the second regions are related; and generating a bitstream including the connectivity information generated and the encoded three-dimensional points.
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公开(公告)号：US12108085B2
公开(公告)日：2024-10-01
申请号：US18082707
申请日：2022-12-16
Inventor： Noritaka Iguchi , Toshiyasu Sugio
IPC: H04N19/70 , H04N19/119 , H04N19/14 , H04N19/172 , H04N19/174 , H04N19/597 , H04N19/124
CPC classification number: H04N19/70 , H04N19/119 , H04N19/14 , H04N19/172 , H04N19/174 , H04N19/597 , H04N19/124
Abstract: A three-dimensional data encoding method includes: generating frame data items by encoding point cloud data items of frames; and generating a bitstream including the frame data items. Each of the frame data items includes processing unit data items corresponding to processing units obtained by dividing one frame. Each of the processing unit data items includes a frame identifier indicating a frame to which the processing unit data item belongs and a processing unit identifier indicating a processing unit corresponding to the processing unit data item. Values of the frame identifiers corresponding to the frame data items placed in the bitstream are set in a predetermined order, and values of the processing unit identifiers corresponding to the processing unit data items placed in the frame data item are set in an arbitrary order.
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Patent Agency Ranking
公开(公告)号：US20240320864A1
公开(公告)日：2024-09-26
申请号：US18669770
申请日：2024-05-21
Inventor： Takahiro Nishi , Toshiyasu Sugio , Noritaka Iguchi
IPC: G06T9/00
CPC classification number: G06T9/00
Abstract: A three-dimensional data encoding method includes: performing motion compensation by correcting position information of one or more first three-dimensional points to be matched to a coordinate system of a current three-dimensional point to be encoded, to generate a first reference point cloud; selecting, from one of the first reference point cloud or a second reference point cloud, a prediction point of the current three-dimensional point, the second reference point cloud including the one or more first three-dimensional points including the position information uncorrected; and encoding position information of the current three-dimensional point by reference to at least part of position information of the prediction point.
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公开(公告)号：US12003767B2
公开(公告)日：2024-06-04
申请号：US17475673
申请日：2021-09-15
Inventor： Toshiyasu Sugio , Noritaka Iguchi
IPC: H04N19/597 , H04N19/184 , H04N19/30 , H04N19/46
CPC classification number: H04N19/597 , H04N19/184 , H04N19/30 , H04N19/46
Abstract: A three-dimensional data encoding method includes: assigning three-dimensional points to M layers, where M is an integer greater than 1; generating respective predicted values of attribute information for the three-dimensional points; encoding the attribute information based on the respective predicted values; and generating a bitstream including layer-number information indicating a number N of lower layers including a bottom-most layer among the M layers, where N is an integer between zero and M, inclusive. In the generating of the predicted values: (i) a predicted value for an upper-layer three-dimensional point in upper layers other than the lower layers among the M layers is generated by a same-layer reference in which another three-dimensional point belonging to a same layer as the upper-layer three-dimensional point is referenced; and (ii) a predicted value for a lower-layer three-dimensional point in lower layers is generated in a condition where the same-layer reference is disabled.
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公开(公告)号：US20240104782A1
公开(公告)日：2024-03-28
申请号：US18533972
申请日：2023-12-08
Inventor： Takahiro NISHI , Toshiyasu Sugio , Noritaka Iguchi
IPC: G06T9/00 , H04N19/13 , H04N19/146
CPC classification number: G06T9/00 , H04N19/13 , H04N19/146
Abstract: A three-dimensional data encoding method includes: encoding, for each of second units, information about positions of three-dimensional points included in a first unit, to generate encoded data items, the second units being smaller than the first unit that is an encoding unit; and outputting the encoded data items. Each of the encoded data items includes no individual additional information. The encoded data items include common additional information. The common additional information includes first information indicating a size of a first encoded data item included in the encoded data items.
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公开(公告)号：US11936919B2
公开(公告)日：2024-03-19
申请号：US17328182
申请日：2021-05-24
Inventor： Toshiyasu Sugio , Noritaka Iguchi
IPC: H04N19/96 , G06T9/40 , H04N19/597 , H04N19/86
CPC classification number: H04N19/96 , G06T9/40 , H04N19/597 , H04N19/86
Abstract: A three-dimensional data encoding method includes: when combine coding including (i) combining pieces of point cloud data to generate combined point cloud data and (ii) encoding the combined point cloud data is performed: setting first information to a first value, and generating a bitstream including the first information set, the first information indicating whether there is a possibility that each leaf node includes three-dimensional points, the first value indicating that there is the possibility that the leaf node includes the three-dimensional points; and when the combine coding is not performed: setting the first information to the first value or a second value, and generating a bitstream including the first information set, the second value indicating that there is no possibility that the leaf node includes the three-dimensional points.
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公开(公告)号：US11936846B2
公开(公告)日：2024-03-19
申请号：US18106029
申请日：2023-02-06
Inventor： Toshiyasu Sugio , Chi Wang , Pongsak Lasang , Chung Dean Han , Noritaka Iguchi
IPC: H04N19/103 , H04N19/184 , H04N19/44 , H04N19/597
CPC classification number: H04N19/103 , H04N19/184 , H04N19/44 , H04N19/597
Abstract: A three-dimensional data encoding method includes: encoding a first flag indicating whether a node having a parent node different from a parent node of a current node is to be referred to in encoding of the current node included in an n-ary tree structure of three-dimensional points included in three-dimensional data; selecting a coding table from N coding tables according to occupancy states of neighboring nodes of the current node, and performing arithmetic encoding on information of the current node using the coding table selected, when the first flag indicates that the node is to be referred to; and selecting a coding table from M coding tables according to the occupancy states of the neighboring nodes of the current node, and performing arithmetic encoding on information of the current node using the coding table selected, when the first flag indicates that the node is not to be referred to.
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