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:
Oct. 13, 2009
Filed:
Apr. 06, 2006
John Roderick Campbell, Kanata, CA;
Wayne Lawrence Dustin, Ottawa, CA;
Christian Joseph Eric Montminy, Ottawa, CA;
Michael Peter Baynger, Ottawa, CA;
Alexander Scott Campbell, Ottawa, CA;
John Roderick Campbell, Kanata, CA;
Wayne Lawrence Dustin, Ottawa, CA;
Christian Joseph Eric Montminy, Ottawa, CA;
Michael Peter Baynger, Ottawa, CA;
Alexander Scott Campbell, Ottawa, CA;
March Networks Corporation, Ottawa, Ontario, unknown;
Abstract
A method and system are provided for counting moving objects in a digital video stream. In contrast to known computationally-expensive methods, areas of motion are determined by threshold subtracting a current video frame from a short term average video scene. An object box surrounding an object is determined by threshold subtracting the current video frame from a long term average video scene. Coordinates of the moving object are identified by associating the area of motion with the object box, if it overlaps the area of motion, to define a moving object box. An event counter can be incremented when the moving object box is in a buffer zone in the current frame, and was in a detection zone in an earlier frame, and was initially detected in a buffer zone on the opposite side of the detection zone.