| Since 2021 | | Member acatech - National Academy of Science and Engineering |
| Since 2020 | | Member-at-large, The Academy of Motion Picture Arts and Science |
| Since 2019 | | Member of the IEEE Visualization Academy |
| Since 2019 | | Member of the ACM SIGGRAPH Academy |
| Since 2018 | | Member of the National Academy of Engineering of Korea |
| Since 2017 | | Member of the Swiss Academy of Engineering Sciences (SATW) |
| Since 2015 | | Member of the FMX Advisory Board |
| Since 2014 | | Member of the Digital Advisory Board, Tamedia |
| Since 2014 | | Member of the Advisory Board, Innovationspark Zurich |
| Since 2012 | | Member of the Berlin-Brandenburg Academy of Sciences and Humanities |
| Since 2012 | | Fellow of the Association for Computing Machinery (ACM) |
| Since 2011 | | Member of the German Academy of Sciences Leopoldina |
| Since 2011 | | Chair of Scientific Advisory Board of Geometric Modeling and Scientific Visualization Center, King Abdullah University of Science and Technology |
| Since 2010 | | Saarlandbotschafter |
| Since 2009 | | Member of the Scientific Advisory Board of the German Research Center for Artificial Intelligence (DFKI) |
| Since 2008 | | Member of the Scientific advisory committee of the German Institute for Artificial Intelligence |
| Since 2007 | | Member of the Curatorium of the Fraunhofer Institute of Computer Graphics (IGD) |
| Since 2006 | | Fellow of the Eurographics Association |
| 2006 - 2007 | | Chair of the Award Committee of INI-GraphicsNet Best Paper Awards |
| Since 2004 | | Member of the Award Committee of the EUROGRAPHICS Association |
| 2004 - 2006 | | Member of the International Advisory Board of IDIAP |
| 2003 - 2008 | | Member of the Scientific Advisory Board of VRVis Research Center |
| 2003 - 2004 | | Member of the Award Committee of the Best Dissertation Award of the German Society for Computer Science (GI) |
| 2002 - 2006 | | Member of the Research Commission of ETH Zurich |
| 2001 - 2016 | | Executive Committee of Eurographics |
| 2000 - 2003 | | Vice-President of the Swiss Computer Graphics Association (SCGA) |
| 2000 - 2003 | | Member, German Association of Computer Science, GI 4.1, Germany |
| 1999 - 2011 | | Member of the Board of Trustees of the INI-GraphicsNet Foundation |
| 1999 - 2001 | | Member of the Research Committee of the Swiss Supercomputing Center |