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:
Dec. 02, 1997
Filed:
Jun. 02, 1995
Applicant:
Inventors:
Paul-Henri Guering, Paris, FR;
Patrick Gayout, Gagny, FR;
Jean-Michel Florentin, Compiegne, FR;
Michel Pichon, Gouvieux, FR;
Assignee:
Saint Gobain Vitrage, Courbevoie, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
382141 ; 348 92 ; 348130 ; 356239 ; 356392 ;
Abstract
For evaluating the optical quality of a glass product utilizing a projection technique, a camera and a computer, the image observed is compared with a reference image reconstructed by means of a convolution window which is displaced over the entire projected image. The illumination at the boundaries is reconstructed by an extrapolation by two-dimensional linear regression.