The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 09, 2004
Filed:
May. 26, 1999
Masafumi Hagiwara, Sagamihara, JP;
Ken Sakakibara, Tokyo, JP;
Toshihiro Kimura, Machida, JP;
Yoshihisa Tadokoro, Yokohama, JP;
Masami Kato, Sagamihara, JP;
Yuuki Yokoo, Hyogo-ken, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A flesh tone region detection processor ( ) detects a flesh tone region from a color still image, and a projective distribution generator ( ) generates the projective distribution of the detected flesh tone region. A facial region search processor ( ) 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 ( ) 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.