Pedro A. Amado Assunção, Sérgio M. M. de Faria: SIGMAP 2006 - Proceedings of the International Conference on Signal Processing and Multimedia Applications, Setúbal, Portugal, August 7-10, 2006, SIGMAP is part of ICETE - The International Joint Conference on e-Business and Telecommunications. INSTICC Press 2006, ISBN 972-8865-64-3