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:
Aug. 03, 1993
Filed:
Jul. 22, 1991
Jean-Yves Dufour, Chatillon sous Bagneux, FR;
Serge Le Gall, Malakoff, FR;
Hugues Waldburger, Meudon, FR;
Thomson TRT Defense, Guyancourt, FR;
Abstract
Apparatus and method to localize rectilinear contours in a digitized image for recognizing shapes at a scene. The gradient of the gray level function of the image at the position of each pixel is determined, and those pixels which constitute a contour pixel are identified. The identified contour pixels are complemented with filler pixels where discontinuities are found. The neighborhood of pixels about a contour pixel is compared with a series of characteristic pixel configurations to determine if a correspondence exists with the characteristic configurations. In this way, rectilinear contour pixels are identified.