US 12,080,034 B2
Attribute information prediction method, encoder, decoder and storage medium
Shuai Wan, Dongguan (CN); Lei Wei, Dongguan (CN); Fuzheng Yang, Dongguan (CN); Junyan Huo, Dongguan (CN); Yanzhuo Ma, Dongguan (CN); and Lihui Yang, Dongguan (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Apr. 14, 2023, as Appl. No. 18/300,484.
Application 18/300,484 is a continuation of application No. 17/805,093, filed on Jun. 2, 2022, granted, now 11,704,840.
Application 17/805,093 is a continuation of application No. PCT/CN2019/122499, filed on Dec. 2, 2019.
Prior Publication US 2023/0252684 A1, Aug. 10, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06T 9/00 (2006.01); G06T 7/73 (2017.01)
CPC G06T 9/001 (2013.01) [G06T 7/75 (2017.01); G06T 2207/10028 (2013.01); G06T 2207/20224 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for predicting attribute information, applied to a coder, the method comprising:
determining position information corresponding to a current point in a point cloud;
determining target position information corresponding to the current point based on the position information according to a preset neighbor information table, the preset neighbor information table being used for determining a coordinate difference between a neighbor position of the current point and a preset reference point, wherein the neighbor position comprises a coplanar neighbor point coplanar with and neighboring to the current point and a collinear neighbor point collinear with and neighboring to the current point, and wherein the preset neighbor information table is created based on coordinate differences calculated based on the coplanar neighbor point and the collinear neighbor point;
judging whether a neighbor point of the current point exists in the point cloud according to the target position information; and
performing prediction to obtain a predicted attribute value of the current point according to attribute reconstruction information of the neighbor point in response to that the neighbor point exists in the point cloud.