公开(公告)号：CA3098586A1

公开(公告)日：2019-11-14

申请号：CA3098586

申请日：2019-05-10

Applicant: PANASONIC IP CORP AMERICA

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

IPC: G06T9/00

Abstract: This three-dimensional data encoding method includes generating a bit stream by encoding a plurality of sub-spaces included in a target space where a plurality of three-dimensional points are included, the generation of the bit stream comprising: storing first information indicating first coordinates which are coordinates of the target space in a first header shared by the plurality of sub-spaces and included in the bit stream (S2831); and storing second information indicating a difference between the first coordinates and second coordinates which are coordinates of a corresponding sub-space in a second header of a sub-space unit included in the bit stream (S2832).

公开(公告)号：CA3105948A1

公开(公告)日：2020-01-16

申请号：CA3105948

申请日：2019-07-10

Applicant: PANASONIC IP CORP AMERICA

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

IPC: G06T9/00

Abstract: In a three-dimensional data encoding method, a bitstream is generated by encoding a plurality of sub-spaces in a target space that comprises a plurality of three-dimensional points, the bitstream comprising a plurality of encoded data corresponding to the plurality of sub-spaces. In generating the bitstream, a list of information about the plurality of sub-spaces, which are mapped to a plurality of identifiers allocated to the plurality of sub-spaces, is stored in first control information shared by the plurality of encoded data in the bitstream (S4531), and the identifiers, allocated to the sub-spaces that correspond to the encoded data, are stored in each of the headers of each of said plurality of encoded data (S4532).

公开(公告)号：CA3096452A1

公开(公告)日：2019-10-24

申请号：CA3096452

申请日：2019-04-18

Applicant: PANASONIC IP CORP AMERICA

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

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：MX2021002620A

公开(公告)日：2021-05-12

申请号：MX2021002620

申请日：2019-09-10

Applicant: PANASONIC IP CORP AMERICA

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

IPC: G06T9/00

Abstract: Un método de codificación de datos tridimensionales que incluye: cuantificar la información de geometría de cada uno de una pluralidad de puntos tridimensionales usando un primer parámetro de cuantificación (S5391); con respecto a una primera luminancia y una primera diferencia de color que indican un primer color a partir de información de atributo perteneciente a cada uno de la pluralidad de puntos tridimensionales, cuantificar la primera luminancia usando un segundo parámetro de cuantificación y cuantificar la primera diferencia de color usando un tercer parámetro de cuantificación (S5392); y generar un flujo de bits que incluya la información de posición cuantificada, la primera luminancia cuantificada, la primera diferencia de color cuantificada, el primer parámetro de cuantificación, el segundo parámetro de cuantificación y una primera diferencia entre el segundo parámetro de cuantificación y el tercer parámetro de cuantificación (S5393).

公开(公告)号：AU2019337164A1

公开(公告)日：2021-03-25

申请号：AU2019337164

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：AU2019285351A1

公开(公告)日：2021-01-07

申请号：AU2019285351

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：CA3089181A1

公开(公告)日：2019-08-01

申请号：CA3089181

申请日：2019-01-24

Applicant: PANASONIC IP CORP AMERICA

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

IPC: G06T9/40 ,  G06T17/00

Abstract: A three-dimensional encoding method for entropy-encoding a bit string that represents an N-branched tree structure (N=integer greater than or equal to 2) of a plurality of three-dimensional points included in three-dimensional data using an encoding table selected from a plurality of encoding tables, the bit string including N-bit information for each node in the N-branched tree structure, the N-bit information including N pieces of 1-bit information that indicates whether or not a three-dimensional point exists in each of N child nodes of the corresponding node, each of the plurality of encoding tables being provided with a context for each bit of the N-bit information. In the entropy-encoding, each bit of the N-bit information is entropy-encoded using the context provided for the bit in the selected encoding table.

公开(公告)号：BR112021013402A2

公开(公告)日：2021-09-14

申请号：BR112021013402

申请日：2020-02-05

Applicant: PANASONIC IP CORP AMERICA

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

IPC: G06T9/40

Abstract: método de codificação de dados tridimensionais, método de decodificação de dados tridimensionais, dispositivo de codificação de dados tridimensionais, e dispositivo de decodificação de dados tridimensionais. a presente invenção refere-se a método e dispositivo de codificação/decodificação de dados tridimensionais incluindo: calcular valores de coeficiente das partes de informação de atributo de pontos tridimensionais incluídos nos dados de nuvem de pontos (s7091); quantizar os valores de coeficiente individualmente para gerar valores quantizados (s7092); e gerar um fluxo de bits incluindo os valores quantizados (s7093). cada um dos valores de coeficiente pertence a qualquer uma das camadas. na quantização (s7092), cada um dos valores de coeficiente é quantizado usando um parâmetro de quantização para uma camada à qual o valor de coeficiente pertence entre as camadas, e o fluxo de bits inclui primeira informação e partes de segunda informação, a primeira informação indicando um parâmetro de quantização de referência, as partes de segunda informação sendo para calcular parâmetros de quantização para as camadas do parâmetro de quantização de referência.

公开(公告)号：SG11202102117VA

公开(公告)日：2021-04-29

申请号：SG11202102117V

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 includes: quantizing geometry information of each of three-dimensional points, using a first quantization parameter (S5391); 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 (S5392); 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 (S5393).

公开(公告)号：SG11202012326TA

公开(公告)日：2021-01-28

申请号：SG11202012326T

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 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, 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 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 the node is not to be referred to (NO in S3662), M being an integer different from N (S3664).