Editorial convidado

Abstract

This special issue of RITA contains the papers of the Tutorials presented at the Brazilian Symposium on Computer Graphics and Image Processing, SIBGRAPI 2007. It was a pleasure to receive 17 submissions, two of them from foreign countries. The majority of them have a very high standard but, because of time and space constraints, only six of them could be accepted. Herein texts associated to five of them are presented. These papers address a number of current research issues as well as conceptual information seek by the students and researchers of the field, as summarized as follows.