US 12,190,549 B2
Information processing device and method
Satoru Kuma, Tokyo (JP); Ohji Nakagami, Tokyo (JP); Koji Yano, Tokyo (JP); Hiroyuki Yasuda, Saitama (JP); and Tsuyoshi Kato, Kanagawa (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/622,488
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Jun. 18, 2020, PCT No. PCT/JP2020/023989
§ 371(c)(1), (2) Date Dec. 23, 2021,
PCT Pub. No. WO2021/002214, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. 2019-124027 (JP), filed on Jul. 2, 2019.
Prior Publication US 2022/0245863 A1, Aug. 4, 2022
Int. Cl. G06T 9/00 (2006.01); G06T 9/40 (2006.01); G06T 17/00 (2006.01)
CPC G06T 9/40 (2013.01) [G06T 17/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An information processing device for processing attribute information of each point of a point cloud representing an object in a three-dimensional shape as a set of points, the information processing device comprising
a hierarchization unit configured to recursively repeat processing of, among points classified as a predictive point or a reference point, deriving a difference value between a predictive value of the attribute information of the predictive point derived using the attribute information of the reference point and the attribute information of the predictive point for the reference point to perform hierarchization of the attribute information, wherein
the hierarchization unit hierarchizes a first level using a first hierarchization method and hierarchizes a second level different from the first level using a second hierarchization method different from the first hierarchization method,
the first hierarchization method is not adapted to scalable decoding and the second hierarchization method is adapted to scalable decoding, and
the hierarchization unit is implemented via at least one processor.