公开(公告)号：US12289469B2

公开(公告)日：2025-04-29

申请号：US18218313

申请日：2023-07-05

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Noritaka Iguchi ,  Toshiyasu Sugio

IPC: H04N19/597 ,  H04N19/124 ,  H04N19/146 ,  H04N19/184

Abstract: A three-dimensional data encoding method includes: encoding pieces of attribute information of respective three-dimensional points, using parameters; and generating a bitstream including the pieces of attribute information encoded, control information, and pieces of first attribute control information. The control information corresponds to the pieces of attribute information and includes pieces of type information each indicating a type of different attribute information, the pieces of first attribute control information correspond one-to-one with the pieces of attribute information, and each of the pieces of first attribute control information includes first identification information indicating that the first attribute control information is associated with one of the pieces of type information.

公开(公告)号：US12273561B2

公开(公告)日：2025-04-08

申请号：US18095747

申请日：2023-01-11

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Noritaka Iguchi ,  Toshiyasu Sugio

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

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.

公开(公告)号：US12262054B2

公开(公告)日：2025-03-25

申请号：US17837460

申请日：2022-06-10

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Toshiyasu Sugio ,  Noritaka Iguchi

IPC: H04N19/597 ,  G06T9/00 ,  H04N19/137

Abstract: A three-dimensional data encoding method includes: calculating difference values each of which is a difference between (i) a corresponding one of pieces of attribute information of three-dimensional points included in point cloud data and (ii) a predicted value corresponding to the corresponding attribute information; generating a second code sequence including first information and a second information, the first information indicating a total number of zero difference values consecutive in a first code sequence in which the difference values are arranged, the second information indicating a value of a non-zero difference value included in the difference values, the zero difference values being included in the difference values and having a value of 0; and generating a bitstream including the second code sequence.

公开(公告)号：US12177495B2

公开(公告)日：2024-12-24

申请号：US18081029

申请日：2022-12-14

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Noritaka Iguchi ,  Toshiyasu Sugio

IPC: H04N19/96 ,  H04N19/423 ,  H04N19/597 ,  H04N19/91

Abstract: A three-dimensional data encoding method includes: obtaining data units each including three-dimensional points; encoding the three-dimensional points included in each of the data units; and generating a bitstream including encoded data obtained by encoding the three-dimensional points. In the encoding: geometry information of three-dimensional points included in a data unit to be encoded is converted into occupancy maps using an N-ary tree; each of the occupancy maps is converted into an index using a table indicating a correspondence relation between occupancy maps and indexes, and the encoded data is generated by encoding the index; the table is updated according to the index resulting from the conversion, and is stored into the memory; and when it is determined that the table stored in the memory is not to be initialized, encoding of a next data unit is started using the table stored in the memory.

公开(公告)号：US12143638B2

公开(公告)日：2024-11-12

申请号：US17154549

申请日：2021-01-21

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Noritaka Iguchi ,  Toshiyasu Sugio

IPC: H04N19/64 ,  H04N13/161 ,  H04N19/184 ,  H04N19/597

Abstract: A three-dimensional data encoding method includes: generating pieces of encoded data by encoding subspaces obtained by dividing a current space including three-dimensional points; and generating a bitstream including the pieces of encoded data and pieces of first information each of which corresponds to a corresponding one of the subspaces. Each of the pieces of first information indicates whether the bitstream includes second information indicating a structure of the corresponding one of the subspaces.

公开(公告)号：US12143634B2

公开(公告)日：2024-11-12

申请号：US17539751

申请日：2021-12-01

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Noritaka Iguchi ,  Toshiyasu Sugio

IPC: H04N19/597 ,  H04N19/70

Abstract: A three-dimensional data encoding method includes: setting a hierarchical structure for items of geometry information of three-dimensional points included in point cloud data, the hierarchical structure having depths and layers each having one or more of the depths; encoding the items of geometry information on a per depth basis to generate items of first encoded data each for a different one of the depths; and generating a bitstream including items of second encoded data which are items of encoded data for respective layers, the items of second encoded data each including one or more items of first encoded data of one or more depths included in a layer corresponding to the item of second encoded data. The bitstream includes an item of first information indicating a data length of each of the items of second encoded data.

公开(公告)号：US20240373044A1

公开(公告)日：2024-11-07

申请号：US18774021

申请日：2024-07-16

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Toshiyasu SUGIO ,  Noritaka Iguchi

IPC: H04N19/30 ,  H04N19/187 ,  H04N19/46 ,  H04N19/88

Abstract: A three-dimensional data encoding method including: generating a layered structure including one or more layers by hierarchically arranging three-dimensional points each having an attribute information item; encoding the attribute information item of each of the three-dimensional points using the layered structure; and generating a first bitstream including the attribute information item encoded and an identification information item indicating whether the three-dimensional points used in the hierarchical arranging are re-ordered in Morton order before the hierarchical arranging.

公开(公告)号：US12075072B2

公开(公告)日：2024-08-27

申请号：US17857574

申请日：2022-07-05

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Toshiyasu Sugio ,  Noritaka Iguchi

IPC: H04N19/30 ,  H04N19/187 ,  H04N19/46 ,  H04N19/88

CPC classification number: H04N19/30 ,  H04N19/187 ,  H04N19/46 ,  H04N19/88

Abstract: A three-dimensional data encoding method including; generating a layered structure including one or more layers by hierarchically arranging three-dimensional points each having an attribute information item; encoding the attribute information item of each of the three-dimensional points using the layered structure; and generating a first bitstream including the attribute information item encoded and an identification information item indicating whether the three-dimensional points used in the hierarchical arranging are re-ordered in Morton order before the hierarchical arranging.

公开(公告)号：US20240276014A1

公开(公告)日：2024-08-15

申请号：US18645800

申请日：2024-04-25

Applicant: Panasonic Intellectual Property Corporation of America

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.

公开(公告)号：US20240273774A1

公开(公告)日：2024-08-15

申请号：US18643410

申请日：2024-04-23

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.