Patents by Inventor Ryohei MURACHI

Ryohei MURACHI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • PUPIL DETECTION DEVICE, LINE-OF-SIGHT DETECTION DEVICE, OCCUPANT MONITORING SYSTEM, AND PUPIL DETECTION METHOD
    Publication number: 20230043992
    Abstract: 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 eye area image, using the image data; an evaluation value calculating unit that calculates evaluation values corresponding to the respective individual image units, using the luminance gradient vectors; and a pupil location detecting unit that detects a pupil location in the eye area image, using the evaluation values.
    Type: Application
    Filed: January 8, 2020
    Publication date: February 9, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Atsushi MATSUMOTO, Ryosuke TORAMA, Shintaro WATANABE, Ryohei MURACHI