Real-time head tracking system for computer games and other applications

a head tracking and computer game technology, applied in the field of computer vision systems, can solve the problems of inability to accurately predict the shape of the object, the effect of reducing the cost of correlation operation, and the relatively high amount of computation for mapping from the 3d model to the image, etc., and achieve the effect of computational efficiency
US20070066393A1Inactive Publication Date: 2007-03-22JOLLY SEVEN SERIES 70 OF ALLIED SECURITY TRUST I
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
JOLLY SEVEN SERIES 70 OF ALLIED SECURITY TRUST I
Publication Date
2007-03-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

A real-time computer vision system tracks the head of a computer user to implement real-time control of games or other applications. The imaging hardware includes a color camera, frame grabber, and processor. The software consists of the low-level image grabbing software and a tracking algorithm. The system tracks objects based on the color, motion and / or shape of the object in the image. A color matching function is used to compute three measures of the target's probable location based on the target color, shape and motion. The method then computes the most probable location of the target using a weighting technique. Once the system is running, a graphical user interface displays the live image from the color camera on the computer screen. The operator can then use the mouse to select a target for tracking. The system will then keep track of the moving target in the scene in real-time.
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Description

REFERENCE TO PRIOR APPLICATIONS

[0001] This application claims priority of U.S. provisional application Ser. No. 60 / 214,991, filed Jun. 29, 2000, and is a continuation-in-part of U.S. patent application Ser. No. 09 / 798,594, filed Mar. 2, 2001, which is a continuation-in-part of U.S. patent application Ser. No. 09 / 371,460, filed Aug. 10, 1999, the entire contents of each application being incorporated herein by reference.FIELD OF THE INVENTION

[0002] This invention relates generally to computer vision systems and, in particular, to a real-time head tracking system and method for use in conjunction with computer games and other control applications. BACKGROUND OF THE INVENTION

[0003] Current imaging systems can convert live scenes into a sequence of digital images which can be processed to track any object in the scene from frame to frame. The techniques used for tracking are numerous. Most of the currently available systems use some characteristic of the subset of the image containin...

Claims

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