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:
Jul. 17, 2001
Filed:
Feb. 06, 1998
Ralph N. Crabtree, Atlanta, GA (US);
Michael C. Moed, Roswell, GA (US);
Mehdi Khosravi, Roswell, GA (US);
NCR Corporation, Dayton, OH (US);
Abstract
A system and method for tracking movement of objects, such as people, through a scene. A background image comprising image information representing a background of the scene is generated. Image information for a video frame is compared with image information of the background image to generate regions in a video frame which potentially represent objects to be tracked in the scene. Region clusters are formed by combinations of regions if such combination satisfy predetermined criteria, and the region clusters are hypotheses of objects to be tracked. Each region cluster is evaluated to determine whether each represents an object to be tracked, based on object model information and correspondence to region clusters in a prior video frame. A confidence value is generated for each region cluster that represents a likelihood that the region represents an object to be tracked. A correspondence is determined between region clusters in consecutive video frames. Tracks of objects through the scene over time are constructed based upon the correspondence determined between region clusters in consecutive video frames.