Patents by Inventor Yuuki Yokoo

Yuuki Yokoo 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).

  • Image processing method, facial region extraction method, and apparatus therefor
    Patent number: 6816611
    Abstract: A flesh tone region detection processor (12) detects a flesh tone region from a color still image, and a projective distribution generator (13) generates the projective distribution of the detected flesh tone region. A facial region search processor (14) searches the projective distribution for a parabola using, e.g., a genetic algorithm, and extracts a facial region candidate from the position of the found parabola. A knowledge processor (15) checks based on the aspect ratio of the region, matching with facial patterns prepared in advance, or the presence/absence of a region corresponding to hair if the extracted facial region candidate is a facial region. The user can set the processing time, the number of persons to be detected, and the face area ratio as a search end condition.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: November 9, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masafumi Hagiwara, Ken Sakakibara, Toshihiro Kimura, Yoshihisa Tadokoro, Masami Kato, Yuuki Yokoo