Nonlinear filtering for speaker tracking in noisy and reverberant environments
ICASSP '01 Proceedings of the Acoustics, Speech, and Signal Processing, 2001. on IEEE International Conference - Volume 05
Particle filter with integrated voice activity detection for acoustic source tracking
EURASIP Journal on Applied Signal Processing
The AIT 2D Face Detection and Tracking System for CLEAR 2007
Multimodal Technologies for Perception of Humans
2D person tracking using Kalman filtering and adaptive background learning in a feedback loop
CLEAR'06 Proceedings of the 1st international evaluation conference on Classification of events, activities and relationships
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This paper presents the Athens Information Technology system for 3D person tracking and the obtained results in the CLEAR 2007 evaluations. The system utilizes audiovisual information from multiple acoustic and video sensors. The proposed system comprises a video and an audio subsystem whose results are suitably combined to track the last active speaker. The video subsystem combines in 3D a number of 2D face localization systems, aiming at tracking all people present in a room. The audio subsystem uses an information theoretic metric upon an ensemble of microphones to estimate the active speaker.