At Patents you can conduct a Patent Search, File a Patent Application, find a Patent Attorney, or search available technology through our Patent Exchange. Patents are available using simple keyword or date criteria. If you are looking to hire a patent attorney, you've come to the right place. Protect your idea and hire a patent lawyer.
|United States Patent||6,009,210|
|Kang||December 28, 1999|
A hands-free navigation system for tracking a head and responsively adjusting the display of a virtual reality environment includes a camera, the camera employed to follow movements of the head, a computer system connected to the camera, the computer system including a memory, a central processing unit (CPU), a digitizer, the digitizer providing a current image of a face of the head, a face tracker, the face tracker including the capability of receiving a reference face image from the digitizer, of receiving the current face image from the digitizer, of determining a head translation and orientation, and of providing the head translation and orientation to a three dimensional virtual environment viewer connected to the computer system for display of the virtual environment at the desired viewpoint.
|Inventors:||Kang; Sing Bing (Cambridge, MA)|
Digital Equipment Corporation
|Filed:||March 5, 1997|
|Current U.S. Class:||382/276 ; 345/156; 345/419; 382/107; 382/154|
|Current International Class:||G06K 9/00 (20060101); G06F 3/00 (20060101); G06K 009/36 ()|
|Field of Search:||345/419,427,8,156-158,7,9 348/36,39 600/595 702/153,152 382/276,154,103,104,107|
|5148477||September 1992||Neely et al.|
|5323470||June 1994||Kara et al.|
|5373857||December 1994||Travers et al.|
|5629988||May 1997||Burt et al.|
|5751838||May 1998||Cox et al.|
|5802220||September 1998||Black et al.|
"3-D Motion Estimation in Model-Based Facial Image Coding", Haibo Li, Student Member, IEEE, Pertti Roivainen, and Robert Forchheimer, "IEEE Transactions on Pattern Analysis and Machine Intelligence", vol. 15, No. 6, Jun. 1993, pp. 545-555. .
"Real-Time Facial-Feature Tracking Based on Matching Techniques and Its Applications", Hiroshi Sako, Mark Whitehouse, Anthony Smith, and Alistair Sutherland, Hitachi Europe Ltd., Research and Development Centre, Dublin Laboratory (HDL), O'Reilly Institute, Trinity College, Dublin 2, Ireland, IEEE, 1994, pp. 320-324. .
"Estimating Gaze from a Single View of a Face", Andrew Gee and Roberto Cipolla, University of Cambridge, Department of Engineering, Cambridge CB2 1PZ, England IEEE, 1994, pp. 758-760. .
"Computing 3-D Head Orientation from a Monocular Image Sequence", Thanarat Horprasert, Yaser Yacoob and Larry S. Davis, IEEE, 1996, pp. 242-247. .
"Visually Controlled Graphics", A. Azarbayejani, T. Starner, B. Horowitz, and A. Pentland, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 15, No. 6, Jun. 1993, pp. 602-605. .
"The Integration of Optical Flow and Deformable Models with Applications to Human Face Shape and Motion Estimation", Douglas DeCarlo and Dimitris Metaxas, IEEE, 1996, pp. 231-238. .
"A Vision System for Observing and Extracting Facial Action Parameters", Irfan A. Essa and Alex Pentland, IEEE, 1994, pp. 76-83. .
"Robotic Assembly Operation Based on Task-Level Teaching in Virtual Reality", Tomoichi Takahashi and Hiroyuki Ogata, IEEE Computer Society, pp. 1083-1088. .
"Detection and Pose Estimation of Human Face with Synthesized Image Models", Akitoshi Tsukamoto, Chil-Woo Lee and Saburo Tsuji, IEEE Computer Society, 1994, pp. 754-757..