Progress in Pattern Recognition, Image Analysis and Applications 12th Iberoamerican Congress on Pattern Recognition, CIARP 2007,Valpariso, Chile, November 13-16, 2007, Proceedings - Rueda, Luis.; Rueda, Luis.; Mery, Domingo.; Mery, Domingo.; Kittler, Josef.; Kittler, Josef. (Image Processing, Computer Vision, Pattern Recognition, and Graphics ;, 2007)