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. 09, 2014
Filed:
Jun. 08, 2012
Aravind Dasu, Herndon, VA (US);
Dean Mathias, North Logan, UT (US);
Chenguang Liu, Logan, UT (US);
Randy Christensen, Cove, UT (US);
Bruce Christensen, Derby, KS (US);
Aravind Dasu, Herndon, VA (US);
Dean Mathias, North Logan, UT (US);
Chenguang Liu, Logan, UT (US);
Randy Christensen, Cove, UT (US);
Bruce Christensen, Derby, KS (US);
Utah State University, Logan, UT (US);
Abstract
A computer implemented method for sensing occupancy of a workspace includes creating a difference image that represents luminance differences of pixels in past and current images of the workspace resulting from motion in the workspace, determining motion occurring in regions of the workspace based on the difference image, and altering a workspace environment based at least in part on the determined motion. The method also includes determining which pixels in the difference image represent persistent motion that can be ignored and determining which pixels representing motion in the difference image are invalid because the pixels are isolated from other pixels representing motion.