ALEXANDRIA, Va., June 25 -- United States Patent no. 12,340,487, issued on June 24, was assigned to SAMSUNG ELECTRONICS Co. Ltd. (Suwon-si, South Korea).
"Learning based discrete cosine noise filter" was invented by Zeeshan Nadir (Richardson, Texas), John W. Glotzbach (Allen, Texas) and Hamid R. Sheikh (Allen, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method includes filtering an input image through a discrete cosine transform based noise filter (DCT-NF). The DCT-NF converts the input image from an original space into a perceptual space, applying gamma correction. The DCT-NF separates luminance channels of the input image from chroma channels of the input image. The DCT-NF divides the input imag...