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. 27, 2007
Filed:
Apr. 18, 2005
Nobumasa Sasaki, Kawasaki, JP;
Hiroaki Natori, Kawasaki, JP;
Tamotsu Amamoto, Yokohama, JP;
Osamu Ikeda, Kawasaki, JP;
Yutaka Maruta, Kawasaki, JP;
Kunihiro Ikeda, Kawasaki, JP;
Shinji Hidaka, Kawasaki, JP;
Masashi Murakumo, Yokohama, JP;
Hiroyuki Nakashima, Yokohama, JP;
Nobumasa Sasaki, Kawasaki, JP;
Hiroaki Natori, Kawasaki, JP;
Tamotsu Amamoto, Yokohama, JP;
Osamu Ikeda, Kawasaki, JP;
Yutaka Maruta, Kawasaki, JP;
Kunihiro Ikeda, Kawasaki, JP;
Shinji Hidaka, Kawasaki, JP;
Masashi Murakumo, Yokohama, JP;
Hiroyuki Nakashima, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In order to improve an identification accuracy of a backlit number plate in a vehicle identification method and device which recognize a vehicle number from a number plate of a vehicle whose image is taken, an image frame of a vehicle is taken by an interlace method, irradiation is performed in an odd field and an even field composing the image frame with light of light quantities different from each other, images of the odd field and the even field are captured, and character recognition processing, only when character recognition processing of a number plate area extracted from an image of one field has ended in failure, of a number plate area extracted from an image of the other field is performed. Also, character recognition processings of number plate areas extracted from the images of the odd field and the even field respectively are performed in parallel, and a result of character recognition processing, only when character recognition processing of a number plate area extracted from an image of one field has ended in failure, of a number plate area extracted from an image of the other field, is adopted as an identification result of the vehicle.