公开(公告)号：MX2020003704A

公开(公告)日：2020-07-22

申请号：MX2020003704

申请日：2018-10-22

Applicant: PANASONIC IP CORP AMERICA

Inventor： SUGIO TOSHIYASU ,  LASANG PONGSAK ,  KOYAMA TATSUYA

IPC: G06T1/00

Abstract: Un método de codificación de datos tridimensionales, en el cual: se hace una determinación sobre si usar o no una estructura de árbol octal para codificar una unidad especial en cuestión de entre una pluralidad de unidades espaciales incluidas en datos tridimensionales (S1522); si se determina que la unidad de espacio en cuestión se va a codificar al usar un estructura de árbol octal (SÍ en S1522), la unidad espacial en cuestión se codifica al usar una estructura de árbol octal (S1523); si se determina que la unidad espacial en cuestión no se va a codificar con una estructura de árbol octal (NO en S1522), la unidad espacial en cuestión se codificada al usar un método diferente a una estructura de árbol octal (S1524); e información que indica si la unidad espacial actual ha sido o no codificada con una estructura de árbol octal se agrega una corriente de bits (S1525).

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.

公开(公告)号：CA3078455A1

公开(公告)日：2019-05-02

申请号：CA3078455

申请日：2018-10-22

Applicant: PANASONIC IP CORP AMERICA

Inventor： LASANG PONGSAK ,  SUGIO TOSHIYASU ,  KOYAMA TATSUYA

IPC: G06T1/00

Abstract: A three-dimensional data encoding method includes: determining whether to encode, using an octree structure, a current space unit among a plurality of space units included in three-dimensional data (S1522); encoding the current space unit using the octree structure, when it is determined that the current space unit is to be encoded using the octree structure (YES in S1522) (S1523); encoding the current space unit using a different method that is not the octree structure, when it is determined that the current space unit is not to be encoded using the octree structure (NO in S1522) (S1524); and appending, to a bitstream, information that indicates whether the current space unit has been encoded using the octree structure (S1525).