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:
Jan. 23, 2007
Filed:
Jul. 02, 2002
Malcolm Steenburgh, Vancouver, CA;
Don Murray, Vancouver, CA;
Vladimir Tucakov, Vancouver, CA;
Shyan Ku, Vancouver, CA;
Rod Barman, Vancouver, CA;
Malcolm Steenburgh, Vancouver, CA;
Don Murray, Vancouver, CA;
Vladimir Tucakov, Vancouver, CA;
Shyan Ku, Vancouver, CA;
Rod Barman, Vancouver, CA;
Point Grey Research, Vancouver, CA;
Abstract
A method for tracking objects entering and exiting an environment comprises providing stereo vision cameras positioned proximate to the paths to enter the environment, such that the stereo vision fields associated with the cameras substantially cover the paths. Using image data obtained by the stereo vision cameras, entry signatures are determined for objects entering the environment and exit signatures are obtained for objects exiting the environment. At any time after the determination of at least one exit signature, exit signatures are matched with the set of available entry signatures. Matching may be performed according to a variety of techniques.