He received his Ph.D. in Computer Science from the National Technical University of Athens, Greece, in 1988. He has been a Research Associate at the Inst. of Informatics & Telecomm., National Center for Scientific Research "Demokritos", Athens, Greece. From 1991 to 1993 he was with the Dept. of Electrical & Computer Eng., University of Toronto, Canada, as a Research Associate. He has participated in many RTD programs in image processing and analysis at University of Toronto and has been a consultant to SPAR Aerospace Ltd., Toronto. Since 1993 he has been with the University of Crete and ICS-FORTH. Currently, he is the supervisor of the Computer Vision & Robotics Lab. at ICS-FORTH where he is engaged in research and RTD programmes in vision-based robot navigation and augmented reality.