US 12,266,140 B2
Methods for level partition of point cloud, and decoder
Shuai Wan, Dongguan (CN); Lei Wei, Dongguan (CN); Fuzheng Yang, Dongguan (CN); and Xiaobin Ding, Dongguan (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Dongguan (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Dongguan (CN)
Filed on Apr. 11, 2024, as Appl. No. 18/632,897.
Application 18/632,897 is a continuation of application No. 18/128,227, filed on Mar. 30, 2023, granted, now 11,983,905.
Application 18/128,227 is a continuation of application No. PCT/CN2020/119707, filed on Sep. 30, 2020.
Prior Publication US 2024/0257404 A1, Aug. 1, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06T 9/00 (2006.01)
CPC G06T 9/001 (2013.01) 20 Claims
OG exemplary drawing
 
1. A method for level partition of a point cloud, applied to a decoder, the method comprising:
decoding a point cloud bitstream, wherein the point cloud bitstream comprises geometry information and attribute information of the point cloud;
determining a maximum permissible value of a first syntax element in the point cloud bitstream as a constant value;
decoding the first syntax element to obtain a value of the first syntax element, wherein the value of the first syntax element is in a range formed by the maximum permissible value;
determining, according to the value of the first syntax element, a number of levels of detail (LODs) in a process of decoding the attribute information; and
decoding the attribute information according to the number of the LODs and the geometry information, to determine a reconstructed point cloud of the point cloud.