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:
Jul. 20, 2004
Filed:
May. 25, 2000
Satoshi Sakuma, Yokohama, JP;
Yasuko Takahashi, Yokohama, JP;
Akio Shio, Yokohama, JP;
Sakuichi Ohtsuka, Yokohama, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
The method for measuring speed is performed by dividing the time sequence image data A into long and narrow frames (step ). Next, the framed images and the time sequence image data B produced by the line scan camera B are correlated to obtain a moving time (step ). Next, a moving time of each framed image and a corresponding moving distance are obtained to compute a moving speed (step ). Next, scale of a specific shape pattern and the like is corrected using the moving speed obtained to match the scales in the two image sequences A and B to obtain a similarity degree (step ). Next, a threshold value is applied to the similarity degree to recognize the specific shape pattern, thereby recognizing that the images are produced by a moving vehicle.