Juan Humberto Sossa Azuela received his BS degree in Communications and Electronics from the University of Guadalajara in 1980. He obtained his Master degree in Electrical Engineering from CINVESTAV-IPN in 1987 and his PhD in Informatics form the INPG, France in 1992. He is currently a titular professor of the Pattern Recognition Laboratory of the Center for Computing Research, of the National Polytechnic Institute from Mexico since 1996. He has more than 30 publications in international journals with rigorous refereeing and more than 100 works in national and international conferences.