公开(公告)号：CA3126760A1

公开(公告)日：2020-08-13

申请号：CA3126760

申请日：2020-02-05

Applicant: PANASONIC IP CORP AMERICA

Inventor： SUGIO TOSHIYASU ,  IGUCHI NORITAKA ,  HAN CHUNG DEAN ,  WANG CHI ,  LASANG PONGSAK

IPC: G06T9/40

Abstract: A three-dimensional data encoding method including calculating a plurality of coefficient values from the plurality of attribute information of a plurality of three-dimensional points included in point group data (S7091), generating a plurality of quantized values by quantizing each of the plurality of coefficient values (S7092), and generating a bit stream that includes the plurality of quantized values (S7093), the plurality of coefficient values belonging to one of a plurality of levels, each of the plurality of coefficient values being quantized in the quantization (S7092) using a quantization parameter for the level to which the coefficient value belongs, the bit stream including first information that indicates a reference quantization parameter and a plurality of second information for calculating a plurality of quantization parameters for a plurality of levels from the reference quantization parameter.

公开(公告)号：CA3103454A1

公开(公告)日：2019-12-19

申请号：CA3103454

申请日：2019-06-14

Applicant: PANASONIC IP CORP AMERICA

Inventor： SUGIO TOSHIYASU ,  WANG CHI ,  LASANG PONGSAK ,  HAN CHUNG DEAN ,  IGUCHI NORITAKA

IPC: G06T9/40

Abstract: A three-dimensional data encoding method for encoding a target node included in an N-ary (N is an integer of 2 or more) tree structure of a plurality of three-dimensional points included in three-dimensional data comprises: encoding a first flag indicating whether or not to reference a node, the parent node of which is different from that of the target node (S3661); selecting, when the first flag indicates that the other node is referenced (Yes at S3662), an encoding table from N encoding tables in accordance with an occupied state of the target node in an adjacent node, and arithmetically encoding information on the target node by using the selected encoding table (S3663); and selecting, when the first flag indicates that the other node is not referenced (No at S3662), selecting an encoding table from M encoding tables different from N encoding tables in accordance with the occupied state of the target node in the adjacent node, and arithmetically encoding information on the target node by using the selected encoding table (S3664).

公开(公告)号：AU2024278530A1

公开(公告)日：2025-01-09

申请号：AU2024278530

申请日：2024-12-17

Applicant: PANASONIC IP CORP AMERICA

Inventor： SUGIO TOSHIYASU ,  WANG CHI ,  LASANG PONGSAK ,  HAN CHUNG DEAN ,  IGUCHI NORITAKA

IPC: G06T9/40

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 5 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, N being an integer greater than or equal to 2 (S3661); 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 10 current node using the coding table selected, when the first flag indicates that the node is to be referred to (YES in S3662) (S3663); 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 15 the node is not to be referred to (NO in S3662), M being an integer different from N (S3664). 21403017_1 (GHMatters) P11514.AU.1

公开(公告)号：SG11202009891QA

公开(公告)日：2020-11-27

申请号：SG11202009891Q

申请日：2019-04-18

Applicant: PANASONIC IP CORP AMERICA

Inventor： WANG CHI ,  LASANG PONGSAK ,  HAN CHUNG DEAN ,  SUGIO TOSHIYASU

IPC: G06T9/00

Abstract: A three-dimensional data encoding method includes: dividing three-dimensional points included in three-dimensional data into three-dimensional point sub-clouds including a first three-dimensional point sub-cloud and a second three-dimensional point sub-cloud (S2631); appending first information indicating a space of the first three-dimensional point sub-cloud to a header of the first three-dimensional point sub-cloud, and appending second information indicating a space of the second three-dimensional point sub-cloud to a header of the second three-dimensional point sub-cloud (S2632); and encoding the first three-dimensional point sub-cloud and the second three-dimensional point sub-cloud so that the first three-dimensional point sub-cloud and the second three-dimensional point sub-cloud are decodable independently of each other (S2633).

公开(公告)号：AU2019256021A1

公开(公告)日：2020-10-29

申请号：AU2019256021

申请日：2019-04-18

Applicant: PANASONIC IP CORP AMERICA

Inventor： WANG CHI ,  LASANG PONGSAK ,  HAN CHUNG DEAN ,  SUGIO TOSHIYASU

IPC: G06T9/00

Abstract: This three-dimensional data encoding method: divides (S2631) a plurality of three-dimensional points included in three-dimensional data into a plurality of three-dimensional point sub-groups including a first three-dimensional point sub-group and a second three-dimensional point sub-group; attaches (S2632) first spatial information of the first three-dimensional point sub-group to a header of the first three-dimensional point sub-group, and attaches second spatial information of the second three-dimensional point sub-group to a header of the second three-dimensional point sub-group; and then encodes (S2633) the first three-dimensional point sub-group and the second three-dimensional point sub-group such that the same can be independently decoded.

公开(公告)号：CA3111805A1

公开(公告)日：2020-03-19

申请号：CA3111805

申请日：2019-09-10

Applicant: PANASONIC IP CORP AMERICA

Inventor： HAN CHUNG DEAN ,  LASANG PONGSAK ,  WANG CHI ,  IGUCHI NORITAKA ,  SUGIO TOSHIYASU

IPC: G06T9/00

Abstract: A three-dimensional data encoding method including: quantizing the position information of each of a plurality of three-dimensional points using a first quantization parameter (S5391); with regard to a first luminance and a first color difference that indicate a first color out of attribute information pertaining to each of the plurality of three-dimensional points, quantizing the first luminance using a second quantization parameter and quantizing the first color difference using a third quantization parameter (S5392); and generating a bit stream that includes the quantized position information, the quantized first luminance, the quantized first color difference, the first quantization parameter, the second quantization parameter, and a first difference between the second quantization parameter and the third quantization parameter (S5393).

公开(公告)号：CA3096184A1

公开(公告)日：2019-10-17

申请号：CA3096184

申请日：2019-04-05

Applicant: PANASONIC IP CORP AMERICA

Inventor： WANG CHI ,  LASANG PONGSAK ,  HAN CHUNG DEAN ,  SUGIO TOSHIYASU

IPC: G06T9/40 ,  H04N13/189 ,  H04N19/96

Abstract: Provided is a three-dimensional data coding method in which: information of a node of interest is coded, said node of interest being included in an N-ary tree structure (where N is an integer greater than 1) of a plurality of three-dimensional points included in three dimensional data, and in the coding, first information is coded which indicates a range in which, from among a plurality of adjacent nodes which are spatially adjacent to the node of interest, adjacent nodes that can be referenced (S2541) are present, and the adjacent nodes in the range are referenced and the node of interest is coded (S2542). In the coding, a coding table may be selected according to whether the three-dimensional points are present among the adjacent nodes in the range, and the selected coding table may be used to entropy-code the information of the node of interest.

公开(公告)号：CA3082460A1

公开(公告)日：2019-05-31

申请号：CA3082460

申请日：2018-11-20

Applicant: PANASONIC IP CORP AMERICA

Inventor： WANG CHI ,  LASANG PONGSAK ,  SUGIO TOSHIYASU ,  KOYAMA TATSUYA

IPC: G06T17/00

Abstract: This three-dimensional data encoding method generates first information which represents, with a first format, an N-ary tree structure (N being an integer greater than or equal to 2) of multiple three-dimensional points included in three-dimensional data, and generates a bit stream containing the first information (S1615), wherein the first information contains three-dimensional point information corresponding to each of multiple three-dimensional points, each unit of three-dimensional point information contains indices corresponding to each of the multiple layers in the N-ary tree structure, and each index indicates to which of the N sub-blocks belonging to the corresponding layer the corresponding three-dimensional point belongs.