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. 06, 1996
Filed:
Oct. 26, 1994
Boyd B Bushman, Lewisville, TX (US);
Lockheed Martin Corporation, Fort Worth, TX (US);
Abstract
A method for detecting objects while eliminating unwanted background utilizes polarizing contrasts. A lens systems focuses light from the field of view through a beam splitter. One beam passes to a digitizer through a polarizer which polarizes the beam at one angle. The other beam is reflected to another polarizer, which is located at a 90.degree. angle relative to the first polarizer. The pixels from the polarized images are digitized. A processor compares the corresponding pixels, subtracting one from the other to find a polarizing contrast. A range that can be varied will display only those pixels which have polarizing contrasts within the selected range. The selection of the range will either include or eliminate the background while displaying man-made targets.