ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,477,146, issued on Nov. 18, was assigned to HANGZHOU HIKVISION DIGITAL TECHNOLOGY Co. LTD. (Zhejiang, China).

"Encoding and decoding method, device and apparatus" was invented by Fangdong Chen (Zhejiang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present application provides an encoding and decoding method, apparatus, and device, the method for encoding and decoding includes: determining prediction values of pixel points of current image block; determining gradient values of pixel points of the current image block based on the prediction values of pixel points of the current image block; determining offset vectors of pixel points of the cu...