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. 09, 2004
Filed:
May. 10, 2001
Applicant:
Inventors:
Romain Desplats, Toulouse, FR;
Philippe Perdu, Toulouse, FR;
Assignee:
Centre National D'Etudes Spatiales, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 9/00 ;
U.S. Cl.
CPC ...
G06K 9/00 ;
Abstract
The invention concerns a method for comparing two recorded pixelated source images ( ) of the same rectangular format representing in contrasted form the equipotential lines on an integrated circuit chip. The method consists in subjecting each source image ( ) to an adaptive thresholding processing with three contrast levels, then forming a result image ( ) from the processed source images ( ) by assigning to each pixel a contrast level defined according to a logical rule of comparison.