US 11,785,216 B2
Point cloud coding methods, encoder, and decoder
Wei Zhang, Guangdong (CN); Fuzheng Yang, Guangdong (CN); Shuai Wan, Guangdong (CN); Yanzhuo Ma, Guangdong (CN); Junyan Huo, Guangdong (CN); and Zexing Sun, Guangdong (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Sep. 12, 2022, as Appl. No. 17/931,272.
Application 17/931,272 is a continuation of application No. 17/702,674, filed on Mar. 23, 2022, granted, now 11,483,560.
Application 17/702,674 is a continuation of application No. PCT/CN2019/109653, filed on Sep. 30, 2019.
Prior Publication US 2023/0007250 A1, Jan. 5, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/119 (2014.01); H04N 19/597 (2014.01)
CPC H04N 19/119 (2014.11) [H04N 19/597 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A point cloud decoding method, applied for a decoder, comprising:
obtaining Morton codes for a point cloud according to geometry information of the point cloud after geometry decoding is completed and the geometry information is reconstructed;
determining the point cloud as an input point cloud of an iteration;
shifting Morton codes for an input point cloud of an i-th iteration right by K bits according to a number of points in the input point cloud of the i-th iteration, K being a positive integer;
selecting a point from points with a same value of Morton codes after right shifted by K bits;
forming an i-th level of detail (LOD) layer with the point selected; and
decoding color information according to the LOD layer.