US 11,790,561 B2
Three-dimensional data encoding method, three-dimensional data decoding method, three-dimensional data encoding device, and three-dimensional data decoding device
Chi Wang, Singapore (SG); Pongsak Lasang, Singapore (SG); Toshiyasu Sugio, Osaka (JP); Takahiro Nishi, Nara (JP); and Toru Matsunobu, 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 Jan. 17, 2023, as Appl. No. 18/97,682.
Application 18/097,682 is a continuation of application No. 16/849,379, filed on Apr. 15, 2020, granted, now 11,587,262.
Application 16/849,379 is a continuation of application No. PCT/JP2018/038815, filed on Oct. 18, 2018.
Claims priority of provisional application 62/574,468, filed on Oct. 19, 2017.
Prior Publication US 2023/0162401 A1, May 25, 2023
Int. Cl. G06T 9/00 (2006.01)
CPC G06T 9/00 (2013.01) 16 Claims
OG exemplary drawing
 
1. A three-dimensional data encoding method, comprising:
generating predicted position information using position information on three-dimensional points included in three-dimensional reference data associated with a time different from a time associated with current three-dimensional data; and
encoding position information on three-dimensional points included in the current three-dimensional data, using the predicted position information,
wherein in the generating of the predicted position information, the predicted position information is generated by applying (i) a first process including at least one of rotation and translation to the position information on the three-dimensional points included in the three-dimensional reference data, and (ii) a second process including at least one of rotation and translation to the position information on the three-dimensional points obtained through the first process, the first process using a first unit and the second process using a second unit that is smaller than the first unit, and
the first unit is a space having a cube structure, and the second unit is a volume from among a plurality of volumes obtained by subdividing the space and having a cube structure.