ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,216,739, issued on Feb. 4, was assigned to Nippon Telegraph and Telephone Corp. (Tokyo).
"Surface processing system" was invented by Yuichi Okabe (Tokyo), Toshishige Shimamura (Tokyo), Tsuyoshi Yamamoto (Tokyo) and Yuzo Ishii (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An image capturing unit captures an image of a surface of a member treated by a surface treatment unit. A comparison unit obtains a correlation coefficient between a reference image stored in a storage unit and the image captured by the image capturing unit. A cross-correlation coefficient between power spectra of the reference image and the image captured by the image capturing ...