06188777 is referenced by 558 patents and cites 4 patents.

Techniques from computer vision and computer graphics are combined to robustly track a target (e.g., a user) and perform a function based upon the image and/or the identity attributed to the target's face. Three primary modules are used to track a user's head: depth estimation, color segmentation, and pattern classification. The combination of these three techniques allows for robust performance despite unknown background, crowded conditions, and rapidly changing pose or expression of the user. Each of the modules can also provide an identity classification module with valuable information so that the identity of a user can be estimated. With an estimate of the position of a target in 3-D and the target's identity, applications such as individualized computer programs or graphics techniques to distort and/or morph the shape or apparent material properties of the user's face can be performed. The system can track and respond to a user's face in real-time using completely passive and non-invasive techniques.

Title
Method and apparatus for personnel detection and tracking
Application Number
9/102101
Publication Number
6188777 (B1)
Application Date
June 22, 1998
Publication Date
February 13, 2001
Inventor
Harlyn Baker
Los Altos
CA, US
John Woodfill
San Francisco
CA, US
Michael Harville
Palo Alto
CA, US
Gaile Gordon
Palo Alto
CA, US
Trevor Darrell
San Francisco
CA, US
Agent
Burns Doane Swecker & Mathis L
US
Assignee
Interval Research Corporation
CA, US
IPC
G06K 9/00
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