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Eric Petajan (born May 17, 1956) is a former AT&T and Bell Labs researcher and inventor in computer vision and video compression. He is the author of numerous peer-reviewed journal articles and holds more than 20 patents in face analysis and video processing. His name is associated with speech recognition and automatic lipreading.

Early life and career
Born in Madison, Wisconsin, Petajan received a B.S. at the University of Utah, an M.S. in Physics (1980) and a Ph.D. in Computer Engineering (1984) from the University of Illinois at Urbana–Champaign where he created the first automatic lipreading system.

In 1984, he joined the Multimedia Communications Research Laboratory at Bell Labs in Murray Hill, New Jersey where he was a researcher and, later, a supervisor for a time spanning the company's reorganization into AT&T and then Lucent Technologies. There he created a second-generation automatic lipreading system and the first hand gesture recognition system.

In 2000, after Bell Labs had become when his work was.

He was chosen by then Lab Director,Arun Netravali to be the technical lead on R&D for AT&T's contribution to HDTV technology in the race for the US HDTV standard. He played a key role in the process leading up to the formation of the US HDTV Grand Alliance.

In 1993 he began work on the 3rd generation face tracking system which led to standardization of face and body animation coding in MPEG-4. He chaired the Face and Body Animation Group from 1996 until 2000.

In 1999, Lucent New Ventures Group began to commercialize his MPEG-4 FBA-compliant facial tracking system. In 2000 face2face was spun out of Lucent with private equity funding to commercialize face tracking systems for animation production. face2face launched the product AlterEGO which was used in various animation productions.

Selected Papers

 * Jonathan Gratch, Jeff Rickel, Elisabeth André, Justine Cassell, Eric Petajan, Norman I. Badler: Creating Interactive Virtual Humans: Some Assembly Required. IEEE Intelligent Systems 17(4): 54-63 (2002).
 * Eric Petajan: Approaches to Visual Speech Processing based on the MPEG-4 Face Animation Standard. IEEE International Conference on Multimedia and Expo (I) 2000: 575-587.
 * Tolga K. Capin, Eric Petajan, Jörn Ostermann: Efficient Modeling of Virtual Humans in MPEG-4. IEEE International Conference on Multimedia and Expo (II) 2000: 1103-1106.
 * Tolga K. Capin, Eric Petajan, Jörn Ostermann: Very Low Bitrate Coding of Virtual Human Animation in MPEG-4. IEEE International Conference on Multimedia and Expo (II) 2000: 1107-1110.
 * Petajan, E. and Graf, J., “Robust talking face analysis for face animation and speech recognition,'” Motion-Based Recognition, Kluwer Academic Publishing, 1997.
 * Petajan, E., “The HDTV grand alliance system,” Video Data Compression for Multimedia Computing, Kluwer Academic Publishers, 1997.
 * Carlo Basile, Alan P. Cavallerano, Michael S. Deiss, Robert Keeler, Jae S. Lim, Wayne C. Luplow, Woo H. Paik, Eric Petajan, Robert Rast, Glenn Reitmeier, Terrence R. Smith, Craig Todd, “The U.S. HDTV standard—the Grand Alliance,” April 1995, IEEE Spectrum, volume 32, issue 4.
 * Petajan, E. D., “A Video Compression” Efficiency Analysis using Progressive and Interlaced Scanning,” NAB ‘94
 * Invited paper on the HDTV Grand Alliance in a special issue of the IEEE Proceedings on Digital Television published in July 1994.
 * Petajan, E. D., Bischoff, B. & Bodoff, D. (1988), An improved automatic lipreading system to enhance speech recognition, ACM SIGCHI-88, 19-25.
 * E. D. Petajan, D. E. Baraff, and G. I. Weil, “Human Hand Model Calibration using 3D reconstruction from Multiple Silhouette Views,” ProceedingsSPIE and SPSE International Symposium and Exposition on Electronic Imaging Devices and Systems '88.
 * Petajan, E. D., “Automatic lipreading to enhance speech recognition.” IEEE Computer Society Conference on Computer Vision and Pattern Recognition. June 19-23, 1985, pp. 40-47.
 * Petajan, E. D.,“Automatic Lipreading to Enhance Speech Recognition”, Proceedings GlobeCom ’84, 1984.