公开(公告)号：US20210368186A1

公开(公告)日：2021-11-25

申请号：US17390194

申请日：2021-07-30

申请人： Panasonic Intellectual Property Corporation of America

发明人： Toshiyasu SUGIO ,  Noritaka IGUCHI ,  Chung Dean HAN ,  Chi WANG ,  Pongsak LASANG

IPC分类号： H04N19/30 ,  H04N19/124 ,  H04N19/46 ,  H04N19/597

摘要： A three-dimensional data encoding method includes: calculating coefficient values from pieces of attribute information of three-dimensional points included in point cloud data; quantizing the coefficient values individually to generate quantized values; and generating a bitstream including the quantized values. Each of the coefficient values belongs to any one of layers. In the quantizing, each of the coefficient values is quantized using a quantization parameter for a layer to which the coefficient value belongs among the layers, and the bitstream includes first information and pieces of second information, the first information indicating a reference quantization parameter, the pieces of second information being for calculating quantization parameters for the layers from the reference quantization parameter.

公开(公告)号：US20210144379A1

公开(公告)日：2021-05-13

申请号：US17150329

申请日：2021-01-15

申请人： Panasonic Intellectual Property Corporation of America

发明人： Chung Dean HAN ,  Pongsak LASANG ,  Chi WANG ,  Noritaka IGUCHI ,  Toshiyasu SUGIO

IPC分类号： H04N19/124 ,  H04N19/186

摘要： A three-dimensional data encoding method includes: quantizing geometry information of each of three-dimensional points, using a first quantization parameter; 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; 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.

公开(公告)号：US20210127136A1

公开(公告)日：2021-04-29

申请号：US17142794

申请日：2021-01-06

申请人： Panasonic Intellectual Property Corporation of America

发明人： Chung Dean HAN ,  Pongsak LASANG ,  Chi WANG ,  Noritaka IGUCHI ,  Toshiyasu SUGIO

IPC分类号： H04N19/597 ,  H04N19/70

摘要： A three-dimensional data encoding method includes: generating a bitstream by encoding subspaces included in a current space in which three-dimensional points are included. The bitstream includes encoded data respectively corresponding to the subspaces. In the generating of the bitstream, a list of information about the subspaces is stored in first control information included in the bitstream. The subspaces are respectively associated with identifiers assigned to the subspaces, and the first control information is common to the encoded data. Each of the identifiers assigned to the subspaces respectively corresponding to the encoded data is stored in a header of a corresponding one of the encoded data.

公开(公告)号：US20210012538A1

公开(公告)日：2021-01-14

申请号：US17038679

申请日：2020-09-30

申请人： Panasonic Intellectual Property Corporation of America

发明人： Chi WANG ,  Pongsak LASANG ,  Chung Dean HAN ,  Toshiyasu SUGIO

IPC分类号： G06T9/00 ,  G06T15/00 ,  G06T17/05

摘要： 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; 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; 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.

公开(公告)号：US20200351519A1

公开(公告)日：2020-11-05

申请号：US16934630

申请日：2020-07-21

申请人： Panasonic Intellectual Property Corporation of America

发明人： Toshiyasu SUGIO ,  Tatsuya KOYAMA ,  Chi WANG ,  Pongsak LASANG

IPC分类号： H04N19/597 ,  H04N19/91 ,  H04N19/103

摘要： A three-dimensional data encoding method includes entropy encoding a bit sequence representing an N-ary tree structure of three-dimensional points included in three-dimensional data, using a coding table selected from coding tables, where N is an integer greater than or equal to 2. The bit sequence includes N-bit information for each of nodes in the N-ary tree structure. The N-bit information includes N pieces of 1-bit information each indicating whether a three-dimensional point is present in a corresponding one of N child nodes of a corresponding one of the nodes. In each of the coding tables, a context is set to each of bits in the N-bit information. In the entropy encoding, each of the bits in the N-bit information is entropy encoded using the context set to the bit in the coding table selected.

公开(公告)号：US20200329258A1

公开(公告)日：2020-10-15

申请号：US16911775

申请日：2020-06-25

申请人： Panasonic Intellectual Property Corporation of America

发明人： Chi WANG ,  Pongsak LASANG ,  Toshiyasu SUGIO ,  Tatsuya KOYAMA

IPC分类号： H04N19/90 ,  G06N3/02

摘要： An encoding method according to the present disclosure includes: inputting three-dimensional data including three-dimensional coordinate data to a deep neural network (DNN); encoding the three-dimensional data by the DNN to generate encoded three-dimensional data; and outputting the encoded three-dimensional data.

公开(公告)号：US20200278450A1

公开(公告)日：2020-09-03

申请号：US16877835

申请日：2020-05-19

申请人： Panasonic Intellectual Property Corporation of America

发明人： Pongsak LASANG ,  Chi WANG ,  Zheng WU ,  Sheng Mei SHEN ,  Toshiyasu SUGIO ,  Tatsuya KOYAMA

IPC分类号： G01S17/894 ,  G06T7/73 ,  G06T7/521

摘要： A three-dimensional point cloud generation method for generating a three-dimensional point cloud including one or more three-dimensional points includes: obtaining (i) a two-dimensional image obtained by imaging a three-dimensional object using a camera and (ii) a first three-dimensional point cloud obtained by sensing the three-dimensional object using a distance sensor; detecting, from the two-dimensional image, one or more attribute values of the two-dimensional image that are associated with a position in the two-dimensional image; and generating a second three-dimensional point cloud including one or more second three-dimensional points each having an attribute value, by performing, for each of the one or more attribute values detected, (i) identifying, from a plurality of three-dimensional points forming the first three-dimensional point cloud, one or more first three-dimensional points to which the position of the attribute value corresponds, and (ii) appending the attribute value to the one or more first three-dimensional points identified.

公开(公告)号：US20200250798A1

公开(公告)日：2020-08-06

申请号：US16857785

申请日：2020-04-24

申请人： Panasonic Intellectual Property Corporation of America

发明人： Pongsak LASANG ,  Chi WANG ,  Toshiyasu SUGIO ,  Tatsuya KOYAMA

IPC分类号： G06T5/00 ,  G06T19/20 ,  H04N19/597 ,  G06T3/00

摘要： A three-dimensional model encoding device includes: a projector that generates a two-dimensional image by projecting a three-dimensional model to at least one two-dimensional plane; a corrector that generates, using the two-dimensional image, a corrected image by correcting one or more pixels forming an inactive area to which the three-dimensional model is not projected, the inactive area being included in the two-dimensional image; and an encoder that generates encoded data by performing two-dimensional encoding on the corrected image.