公开(公告)号：US12230003B2

公开(公告)日：2025-02-18

申请号：US17709805

申请日：2022-03-31

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Chung Dean Han ,  Pongsak Lasang ,  Pradit Mittrapiyanuruk ,  Keng Liang Loi ,  Noritaka Iguchi ,  Toshiyasu Sugio

IPC: G06F18/25 ,  G06F18/214 ,  G06T7/60 ,  G06T9/00 ,  G06V10/764 ,  G06V10/774 ,  G06V10/80 ,  G06V20/56

Abstract: A three-dimensional data decoding method includes: obtaining three-dimensional space information including encoded three-dimensional points; calculating an angle formed by a line segment connecting a predetermined position in the three-dimensional space information and a first base point and a line segment connecting the first base point and a second base point different from the first base point; determining whether the angle calculated satisfies a predetermined condition; and decoding the encoded three-dimensional points included in the three-dimensional space information when the angle calculated is determined to satisfy the predetermined condition, and not decoding the encoded three-dimensional points included in the three-dimensional space information when the angle calculated is determined not to satisfy the predetermined condition.

公开(公告)号：US12206870B2

公开(公告)日：2025-01-21

申请号：US17858198

申请日：2022-07-06

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Toshiyasu Sugio ,  Noritaka Iguchi

IPC: H04N19/184 ,  H04N19/30 ,  H04N19/46 ,  H04N19/91

Abstract: A three-dimensional data encoding method of encoding three-dimensional points each having an attribute information item includes: classifying each of the three-dimensional points into any of layers including a first layer and a second layer; and arithmetic-encoding an attribute information item of a current three-dimensional point among the three-dimensional points with reference to a first encoding table when the current three-dimensional point is at the first layer, and with reference to a second encoding table not dependent on the first encoding table when the current three-dimensional point is at the second layer.

公开(公告)号：US20250014232A1

公开(公告)日：2025-01-09

申请号：US18895793

申请日：2024-09-25

Applicant: Panasonic Intellectual property Corporation of America

Inventor： Chung Dean HAN ,  Pongsak Lasang ,  Pradit Mittrapiyanuruk ,  Keng Liang Loi ,  Noritaka Iguchi ,  Toshiyasu Sugio

IPC: G06T9/40 ,  G06T9/00 ,  G06T17/00 ,  H04N7/24 ,  H04N13/161 ,  H04N19/17 ,  H04N19/96 ,  H04N21/236 ,  H04N21/81

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.

公开(公告)号：US12190551B2

公开(公告)日：2025-01-07

申请号：US17953432

申请日：2022-09-27

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Toshiyasu Sugio ,  Noritaka Iguchi

IPC: G06T9/40

Abstract: A three-dimensional data encoding method includes: obtaining a plurality of three-dimensional points; generating a prediction tree using the plurality of three-dimensional points; predictive-encoding geometry information of the plurality of three-dimensional points using the prediction tree; and generating a bitstream including encoded data obtained from the predictive-encoding, a total number of three-dimensional points included in the prediction tree, and identification information indicating whether or not to rearrange the plurality of three-dimensional points in Morton order.

公开(公告)号：US12125252B2

公开(公告)日：2024-10-22

申请号：US18224705

申请日：2023-07-21

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Toshiyasu Sugio ,  Noritaka Iguchi

IPC: G06T9/00 ,  G06T9/40

CPC classification number: G06T9/001 ,  G06T9/40

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.

公开(公告)号：US12125251B2

公开(公告)日：2024-10-22

申请号：US18196652

申请日：2023-05-12

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Toshiyasu Sugio ,  Noritaka Iguchi

IPC: G06K9/00 ,  G06F18/241 ,  G06T9/00 ,  G06T9/40 ,  G06V20/64

CPC classification number: G06T9/001 ,  G06F18/241 ,  G06T9/40 ,  G06V20/64

Abstract: A three-dimensional data encoding method includes: determining a total number of layers; when the total number of the layers is greater than 1, selecting, from pieces of attribute information of three-dimensional points, attribute information of a three-dimensional point based on a sampling period according to a data order of the pieces of attribute information of the three-dimensional points, and classifying the pieces of attribute information of the three-dimensional points into layers by assigning a first layer to pieces of attribute information of three-dimensional points selected and a second layer to pieces of attribute information of three-dimensional points non-selected; encoding the pieces of attribute information of the three-dimensional points for each of the layers; and generating a bitstream including the pieces of attribute information encoded, layer-number information, and sampling period information. When the total number of the layers is 1, a bitstream not including the sampling period information is generated.

公开(公告)号：US12010395B2

公开(公告)日：2024-06-11

申请号：US16669769

申请日：2019-10-31

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Tadamasa Toma ,  Noritaka Iguchi ,  Hisaya Katou

IPC: H04N21/6379 ,  G11B27/10 ,  H04N19/436 ,  H04N21/426 ,  H04N21/438 ,  H04N21/845 ,  H04N21/85

CPC classification number: H04N21/6379 ,  G11B27/10 ,  H04N19/436 ,  H04N21/42615 ,  H04N21/4382 ,  H04N21/845 ,  H04N21/8456 ,  H04N21/85

Abstract: A transmission method includes: dividing a picture into a plurality of regions; generating a plurality of pieces of encoded data that respectively correspond to the plurality of regions by encoding the plurality of regions such that each of the plurality of regions can be decoded independently; packetizing the generated plurality of pieces of encoded data into a plurality of packets such that pieces of encoded data for different regions are not stored in a single packet; and transmitting the plurality of packets. By this, workload for generation of decoding target data is reduced.

公开(公告)号：US11995874B2

公开(公告)日：2024-05-28

申请号：US17557829

申请日：2021-12-21

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Toshiyasu Sugio ,  Noritaka Iguchi

IPC: G06T9/40

CPC classification number: G06T9/40

Abstract: A three-dimensional data encoding method includes: assigning three-dimensional points to one of layers, based on items of geometry information of the three-dimensional points; searching three-dimensional points surrounding a current three-dimensional point to be encoded, to select, from the three-dimensional points, a three-dimensional point to be referred to when a predicted value of attribute information of the current three-dimensional point is calculated, the current three-dimensional point belonging to a first layer among the layers; and calculating the predicted value of the attribute information of the current three-dimensional point using the three-dimensional point selected. In the searching of the three-dimensional points, a search range for a same layer as the current three-dimensional point is different from a search range for a layer higher than the first layer.

公开(公告)号：US11928844B2

公开(公告)日：2024-03-12

申请号：US17468122

申请日：2021-09-07

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Noritaka Iguchi ,  Toshiyasu Sugio

IPC: G06T9/40

CPC classification number: G06T9/40

Abstract: A three-dimensional data encoding method includes: encoding geometry information of each of three-dimensional points based on one of a first geometry information encoding method of encoding using octree division and a second geometry information encoding method of encoding without using octree division; and generating a bitstream including the geometry information encoded and a geometry information flag indicating whether the encoding was performed based on the first geometry information encoding method or the second geometry information encoding method. In the generating of the bitstream: when the encoding is performed based on the first geometry information encoding method, the bitstream including a parameter set used in octree division is generated; and when the encoding is performed based on the second geometry information encoding method, the bitstream not including the parameter set used for octree division is generated.

公开(公告)号：US11750840B2

公开(公告)日：2023-09-05

申请号：US17993153

申请日：2022-11-23

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Noritaka Iguchi ,  Toshiyasu Sugio

IPC: H04N19/597 ,  H04N19/119 ,  H04N19/46

CPC classification number: H04N19/597 ,  H04N19/119 ,  H04N19/46

Abstract: A three-dimensional data encoding method includes: encoding divided data items to generate encoded data items each corresponding to a respective one of the divided data items, the divided data items being included in subspaces obtained by dividing a current space including three-dimensional points, the divided data items each including one or more three-dimensional points among the three-dimensional points; and generating a bitstream including the encoded data items and control information items each corresponding to a respective one of the encoded data items. Each of the control information items includes a first identifier and a second identifier. The first identifier indicates a subspace corresponding to an encoded data item corresponding to the control information item, and the second identifier indicates a divided data item corresponding to the encoded data item corresponding to the control information item.