US 11,877,014 B2
Three-dimensional data encoding method, three-dimensional data decoding method, three-dimensional data encoding device, and three-dimensional data decoding device
Takahiro Nishi, Nara (JP); Toshiyasu Sugio, Osaka (JP); and Noritaka Iguchi, Osaka (JP)
Assigned to Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed by Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed on Mar. 8, 2023, as Appl. No. 18/118,893.
Application 18/118,893 is a continuation of application No. PCT/JP2021/033888, filed on Sep. 15, 2021.
Claims priority of provisional application 63/080,273, filed on Sep. 18, 2020.
Prior Publication US 2023/0224507 A1, Jul. 13, 2023
Int. Cl. G06K 9/46 (2006.01); H04N 19/96 (2014.01); H04N 19/51 (2014.01); H04N 19/91 (2014.01); G06T 17/00 (2006.01)
CPC H04N 19/96 (2014.11) [G06T 17/005 (2013.01); H04N 19/51 (2014.11); H04N 19/91 (2014.11)] 11 Claims
OG exemplary drawing
 
1. A three-dimensional data decoding method comprising:
performing motion compensation on a second point cloud by using motion from a decoded first point cloud to the second point cloud, to generate a third point cloud having a position which is a position of the second point cloud that is shifted based on the motion;
merging the first point cloud and the third point cloud, to generate a reference point cloud;
decoding an N-ary tree structure of a current point cloud using the reference point cloud, where N is an integer greater than or equal to 2; and
generating a decoded point cloud of the current point cloud from the N-ary tree structure of the current point cloud.