US 11,983,914 B2
Information processing device and information processing method for point cloud data compression
Takumi Tsuru, Tokyo (JP); Toshiya Hamada, Tokyo (JP); and Mitsuhiro Hirabayashi, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/633,286
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Jul. 2, 2020, PCT No. PCT/JP2020/026046
§ 371(c)(1), (2) Date Feb. 7, 2022,
PCT Pub. No. WO2021/029155, PCT Pub. Date Feb. 18, 2021.
Claims priority of application No. 2019-148892 (JP), filed on Aug. 14, 2019.
Prior Publication US 2022/0351484 A1, Nov. 3, 2022
Int. Cl. G06V 10/26 (2022.01); G06V 20/64 (2022.01)
CPC G06V 10/26 (2022.01) [G06V 20/64 (2022.01)] 11 Claims
OG exemplary drawing
 
1. An information processing device, comprising:
a central processing unit (CPU) configured to generate, in a video-based point cloud compression, a first identification region map with a tangential plane as a boundary for each projection plane on which an object is projected, wherein
the first identification region map indicates:
whether each divided object data is visible from each position in a three-dimensional space, and
a region where viewing of divided object data projected on the projection plane is not necessary,
the generation of the first identification region map is based on information regarding orientation of a normal vector dividing an object in the three-dimensional space and information regarding an outline of the object,
the information regarding the outline of the object is sphere information regarding a sphere containing the object in the three-dimensional space,
the tangential plane is associated with the sphere indicated by the sphere information, and
the tangential plane is orthogonal to a boundary vector serving as a reference for which the projection plane and a region of a surface of the object is to be projected.