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  • Research Article
  • Open Access

An Active Model for Facial Feature Tracking

EURASIP Journal on Advances in Signal Processing20022002:569028

  • Received: 7 July 2001
  • Published:


We present a system for finding and tracking a face and extract global and local animation parameters from a video sequence. The system uses an initial colour processing step for finding a rough estimate of the position, size, and inplane rotation of the face, followed by a refinement step drived by an active model. The latter step refines the pre­vious estimate, and also extracts local animation parame­ters. The system is able to track the face and some facial features in near real-time, and can compress the result to a bitstream compliant to MPEG-4 face and body animation.


  • active appearance models
  • free tracking
  • facial feature tracking
  • model-based coding
  • MPEG-4 face and body animation

Authors’ Affiliations

Image Coding Group, Department of Electrical Engineering, Linköping University, Linköping, SE-581 31, Sweden


© Ahlberg 2002