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:
Apr. 20, 1993
Filed:
Jun. 08, 1992
Applicant:
Inventor:
Christopher J Lebeau, Tempe, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
382-8 ; 382 51 ; 53 55 ; 358106 ;
Abstract
A method of image processing for visually inspecting a workpiece. The method compares the brightness (15) at each location within an image of the workpiece to the equivalent location within an image of an idealized workpiece. The inspection depends only on local brightness differences between the two images. The method can detect defects which have no distinct edges. Finally this method can detect defects which are small enough that the resolution of the image will show these small defects only as a single point of light (12) or dark (27).