ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,511,789, issued on Dec. 30, was assigned to ZHEJIANG UNIVERSITY (Hangzhou, China).

"Point cloud attribute encoding and decoding method and device" was invented by Lu Yu (Hangzhou, China), Jiafeng Chen (Hangzhou, China) and Wenyi Wang (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "In a point cloud attribute decoding method and device, Hilbert order is used as the coding order of point cloud attributes. The nearest neighbor points in the three-dimensional space of the current point are found in several points before the current point and are used as the prediction points of the current point. In the worst case, the distance in the three-d...