| Co-chair, Birds-of-a-feather | VisWeek 2010 |
| Co-chair, Program Committee | Eurographics Symposium on Parallel Graphics and Visualization 2009 |
| Co-chair, Workshop of Theses and Dissertations | XIX SIBGRAPI Brazilian Symposium on Computer Graphics and Image Processing 2007 |
| Co-chair, Award Student Prize | Computer Graphics International (CGI) 2007 |
| Co-chair, Posters | XVIII SIBGRAPI Brazilian Symposium on Computer Graphics and Image Processing 2006 |
| Co-chair, Program Committee | XVII SIBGRAPI/II SIACG Braziliam Symposium on Computer Graphics and Image Processing 2004 |
| Co-chair, Tutorials | XV SIBGRAPI Braziliam Symposium on Computer Graphics and Image Processing 2002 |