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:
Mar. 19, 2013
Filed:
Aug. 27, 2009
Steve Nelson, San Jose, CA (US);
Steve Nelson, San Jose, CA (US);
Seiko Epson Corporation, Tokyo, JP;
Abstract
Methods having corresponding apparatus and tangible computer-readable media comprise: capturing a first image of ambient light upon a surface; generating a first grayscale image based on a selected color channel of the first image; projecting a primary color of light upon the surface; capturing a second image of the primary color of light projected upon the surface; generating a second grayscale image based on the selected color channel of the second image; generating a difference image, comprising subtracting the first grayscale image from the second grayscale image; and generating a projector mask, comprising detecting edges of a shape in the difference image, and reproducing the shape based upon the edges of the shape.