US 12,464,145 B2
Three-dimensional data encoding method, three-dimensional data decoding method, three-dimensional data encoding device, and three-dimensional data decoding device
Toshiyasu Sugio, Osaka (JP); Noritaka Iguchi, Osaka (JP); Chung Dean Han, Singapore (SG); Chi Wang, Singapore (SG); and Pongsak Lasang, Singapore (SG)
Assigned to PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA, Torrance, CA (US)
Filed by Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed on Jan. 11, 2024, as Appl. No. 18/410,582.
Application 18/410,582 is a continuation of application No. 17/390,194, filed on Jul. 30, 2021, granted, now 11,909,992.
Application 17/390,194 is a continuation of application No. PCT/JP2020/004360, filed on Feb. 5, 2020.
Claims priority of provisional application 62/807,930, filed on Feb. 20, 2019.
Claims priority of provisional application 62/801,289, filed on Feb. 5, 2019.
Prior Publication US 2024/0155142 A1, May 9, 2024
Int. Cl. H04N 19/30 (2014.01); H04N 19/124 (2014.01); H04N 19/46 (2014.01); H04N 19/597 (2014.01)
CPC H04N 19/30 (2014.11) [H04N 19/124 (2014.11); H04N 19/46 (2014.11); H04N 19/597 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A three-dimensional data encoding method, comprising:
calculating coefficient values from pieces of attribute information of three-dimensional points included in point cloud data, the attribute information including information related to a vector;
quantizing the coefficient values individually to generate quantized values; and
generating a bitstream including the quantized values, wherein
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 corresponding layer to which the coefficient value belongs among the layers,
the three-dimensional data encoding method further comprises calculating the quantization parameter for each of the layers, and
the bitstream includes pieces of first information, the pieces of first information being for the calculating of the quantization parameter for each of the layers.