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. 14, 2000
Filed:
Feb. 09, 1999
Applicant:
Inventors:
Keiji Saneyoshi, Tokyo, JP;
Hideaki Tsuchiya, Tokyo, JP;
Assignee:
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05D / ;
U.S. Cl.
CPC ...
701-4 ; 348117 ;
Abstract
A three-dimensional image of a ground surface taken by a stereoscopic camera is converted to a distance image in a stereoscopic processing section. In an altitude calculating section, after peculiar points contained in the distance image are deleted and further the lens distortion is deleted from the distance image, the distance image is transferred to a real space coordinate. Then, an equation approximating to a plane is obtained from data of the distance image and a length of a perpendicular line to the plane is calculated as a ground altitude.