23Rd Conference on Graphics, Patterns and Images Tutorials, Sibgrapi-T 2010, Date: 30 August 2010 through 3 September 2010, Location: Gramado, Patrocinadores: Brazilian Computer Society (SBC);Cons. Nac. Desenvolv. Cient. Tecnol. (CNPq);CAPES;Univ. Fed. Rio Grande Sul (UFRGS) - Inst. Inform. (INF);Fapergs;PETROBRAS (BR)