ALEXANDRIA, Va., July 14 -- United States Patent no. 12,682,433, issued on July 14, was assigned to Tencent Technology (Shenzhen) Co. Ltd. (Shenzhen, China).

"Noise reduction for lightmap" was invented by Xiaoyu Pan (Shenzhen, China), Yuanheng Li (Shenzhen, China) and Yu Wu (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a noise reduction method of a lightmap, including: obtaining a lightmap (202); determining, by using each pixel in the lightmap as a target pixel, a noise reduction reference region corresponding to the target pixel in the lightmap, the noise reduction reference region including a reference pixel for noise reduction reference (204); determining a distance in three...