US Patent Issued to Mitsubishi Electric on April 15 for "Pupil detection device, line-of-sight detection device, occupant monitoring system, and pupil detection method" (Japanese Inventors)

ALEXANDRIA, Va., June 5 -- United States Patent no. 12,277,728, issued on April 15, was assigned to Mitsubishi Electric Corp. (Tokyo).

"Pupil detection device, line-of-sight detection device, occupant monitoring system, and pupil detection method" was invented by Atsushi Matsumoto (Tokyo), Ryosuke Torama (Tokyo), Shintaro Watanabe (Tokyo) and Ryohei Murachi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A pupil detection device includes an eye area image obtaining unit that obtains image data representing an eye area image in a captured image obtained by a camera; a luminance gradient calculating unit that calculates luminance gradient vectors corresponding to respective individual image units in the ...