ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,541,831, issued on Feb. 3, was assigned to Huawei Technologies'Co.'Ltd.' (Shenzhen, China).
"Tone mapping method and apparatus" was invented by Yichuan Wang (Beijing), Quanhe Yu (Beijing), Weiwei Xu (Hangzhou, China) and Hu Chen (Munich).
According to the abstract* released by the U.S. Patent & Trademark Office: "Tone mapping methods and apparatus provide for receipt by a backend device may of metadata and an HDR image from a frontend device and the generation of a mapping curve based on feature parameters of the mapping curve included in the metadata. Tone mapping on the HDR image can be performed based on the mapping curve. The feature parameters of the mapping curve are determined ...