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:
Sep. 03, 1996
Filed:
Aug. 25, 1995
Frank P Nanna, Crystal Lake, IL (US);
John Jereb, Dundee, IL (US);
Tricor Systems, Inc., Elgin, IL (US);
Abstract
A gloss measurement system for optically measuring gloss based solely on the specular light reflected from an object. Two polarizing filters, each oriented 90 degrees with respect to each other, are used in order to separate the diffuse or color reflection component from the specular or gloss reflection component. Two images are digitized sequentially using each of the two polarizing filters. The images are subtracted from each other on a pixel by pixel basis and the resulting image contains only specular or gloss reflections. This resulting image is then statistically manipulated in order to group gloss pixels by magnitude. This grouping results in a gloss profile which is a direct indicator of surface gloss.