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. 01, 2006
Filed:
May. 02, 2003
Fausto Bernardini, New York, NY (US);
Frank P. Giordano, Scarsdale, NY (US);
Jose Gomes, Douglaston, NY (US);
Holly Rushmeier, Mount Kisco, NY (US);
Fausto Bernardini, New York, NY (US);
Frank P. Giordano, Scarsdale, NY (US);
Jose Gomes, Douglaston, NY (US);
Holly Rushmeier, Mount Kisco, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A light source calibration target has a surface in view of a camera of an image capture system, The target includes a substrate having a substantially Lambertian surface, a visually distinct polygonal shape having corners formed on said surface so as to be visually distinct from the surface, and a plurality of objects each having an upstanding tip mounted on the surface, A method of using the calibration target operates, for each of the light sources to be calibrated, to capture an image of the target; process the captured image to derive light source calibration data and to store the calibration data.