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:
Jun. 11, 2002
Filed:
Sep. 21, 2000
Yoshiyuki Sogawa, Tokyo, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
In a method of examining the reliability of distance data calculated based on stereoscopic images, a pair of photographed images is obtained by taking pictures of a test chart carrying a brightness pattern with a stereo camera, the test chart being placed in a shooting direction of the stereo camera. The distance data is calculated from these photographed images by stereo matching. Using the distance data concerning the test chart shown in the photographed images as the evaluation samples, a histogram showing a relationship between distance values of evaluation samples and their frequency of occurrence is produced. The reliability of the calculated distance data is judged by evaluating properties of the histogram thus produced based on the distance between the stereo camera and the test chart.