Recent Activities

• Author of Machine Learning in Computer Vision, Springer Verlag, ISBN 1-4020-3274-9, May 2005
• Author of Robust Computer Vision - Theory and Applications, Kluwer Academic Publishers, ISBN 1-4020-1293-4, April 2003

• Guest Editor for the IEEE Transactions on Big Data, Special Issue on Big Media Data: Understanding, Search, and Mining, Summer 2016.
• Guest Editor for the Journal on Multimodal User Interfaces, Special Issue on Emotion Recognition in the Wild Fall 2015.
• Guest Editor for the Image and Vision Computing Journal, Special Issue on Event-based Media Processing and Analysis , Fall 2015.
• Guest Editor for Machine Vision and Applications, Special Issue on Contextual Visual Computing, vol. 25, issue 7, October 2014.
• Guest Editor for IEEE MultiMedia, Special Issue on Large Scale Geo-Social Multimedia Computing, vol. 21, issue 3, July-September 2014.
• Guest Editor for IEEE Transactions on Multimedia, Special Issue on Socio-Mobile Media Analysis and Retrieval, vol. 16, issue 3, April 2014.
• Guest Editor for Computer Vision and Image Understanding, Special Issue on Learning from Multiple Evidences for Large Scale Multimedia Analysis vol. 118, issue 1, January 2014.
• Guest Editor for International Journal of Computer Vision, Special Issue on Human-Computer Interaction: Real-Time Vision Aspects of Natural User Interfaces vol. 101, issue 3, February 2013.
• Guest Editor for the Journal of Visual Communication and Image Representation, Special Issue on Large-Scale Multimedia Search, vol. 21, issue 8, November 2010.
• Guest Editor for the IEEE Transactions on Multimedia, Special issue on Multimodal Affective Interaction vol. 12, issue 6, October 2010.
• Guest Editor for the Image and Vision Computing Journal, Special Issue on Face and Gesture Recognition, vol. 28, nr. 5, May 2010.
• Guest Editor for the ACM Transactions on Multimedia Computing Communication and Applications Special Issue on Multimedia Analysis, Vol 4, No 4, 2008.
• Guest Editor for Computer Vision and Image Understanding, Special Issue on Similarity Matching, Vol 110, No 3, June 2008.
• Guest Editor for the Image and Vision Computing Journal Special Issue on Human-computer Interaction, Vol 25, No. 12, December 2007.
• Guest Editor for the IEEE Computer, Special Issue on Human-centered Computing, Vol 40, No 5, May 2007.
• Guest Editor for the ACM Transactions on Multimedia Computing Communication and Applications Special Issue on Multimedia Information Retrieval, Vol 2, No.1 February 2006.
• Guest Editor for the ACM Multimedia Systems Journal Special Issue on Systems and Architectures of Multimedia Information Retrieval, Vol 10, No. 6, October 2005.
• Guest Editor for Computer Vision and Image Understanding Special Issue on Video Retrieval and Summarization, Vol. 92, No. 2-3, November/December, 2003

• Program Chair, International Conference on Computer Vision (ICCV), Venice, October 2017
• General Chair, International Conference on Multimedia Retrieval, Bucharest, June 2017
• Program Chair, European Conference on Computer Vision (ECCV), Amsterdam, October 2016
• General Chair, International Conference on Multimedia Modelling, Miami, January 2016
• Area Chair for International Conference on Computer Vision, Santiago, Chile, December 2015
• Area Chair for ACM Multimedia, Brisbane (Australia), October 2015
• General Chair, ACM Multimedia, Barcelona, October 2013
• General Chair, International Conference on Affective Computing and Intelligent Interaction (ACII), Geneva, September 2013
• Program Chair, International Conference on Multimedia Modelling, Huangshan, January 2013
• Area Chair for ACM Multimedia, Nara (Japan), October 2012
• Program Chair for the International Conference on Multimodal Interfaces (ICMI), Alicante, November 2011
• Program Chair, ACM Multimedia, Scottsdale, December 2011
• Area Chair for the Asian Conference on Computer Vision (ACCV), Queenstown (NZ), November 2010
• Track Chair International Conference on Pattern Recognition (ICPR), Istanbul, August 2010
• General Chair of the International Conference on Image and Video Retrieval (CIVR), Beijing, July 2010 (B ranking).
• Area Chair European Conference on Computer Vision (ECCV), Heraklion, September 2010 (A ranking).
• Area Chair Asian Conference on Computer Vision (ACCV), Xian, September 2009 (B ranking).
• Track Chair for the International World Wide Web conference (WWW), Madrid, April 2009 (A* ranking).
• General Chair of the International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS), London, 6-8 May 2009.
• Workshop Chair of the 3rd International Workshop on Human-centered Computing (HCM08) - in conjunction with ACM Multimedia 2008.
• General Chair of IEEE International Conference on Automatic Face and Gesture Recognition, Amsterdam, 17-19 September 2008.
• Area Chair, IEEE International Conference on Computer Vision and Pattern Recognition (CVPR), June 2008.
• Workshop Chair of the 2nd International Workshop on Human-centered Computing (HCM07) - in conjunction with ACM Multimedia 2007.
• Workshop Chair of the IEEE International Workshop on Human Computer Interaction (HCI07) - in conjunction with the 11th International Conference on Computer Vision (ICCV 2007)
• General Chair of the International Conference on Image and Video Retrieval (CIVR 2007), Amsterdam, 9-11 July 2007.
• Program Chair of the International Workshop on Multimedia Content Analysis and Mining, Weihai, China, June 2007.
• Chair of the IS&T/SPIE Conference on Multimedia Content Access: Algorithms and Systems, San Jose, CA, January 2007.
• General Chair of Asia-Pacific Workshop on Information Processing (VIP 2006), Beijing, China, 7-9 November 2006.
• Workshop Chair of the 1st International Workshop on Human-centered Computing (HCM06) - in conjunction with ACM Multimedia 2006.
• Workshop Chair of the International Workshop on Human Computer Interaction (HCI06) - in conjunction with the 9th European Conference on Computer Vision (ECCV 2006)
• Chair of the IS&T/SPIE Conference on Multimedia Content Analysis, Management, and Retrieval, San Jose, CA, January 2006.
• Workshop Chair of the IEEE International Workshop on Human Computer Interaction (HCI05) - in conjunction with the 10th International Conference on Computer Vision (ICCV 2005)
• Workshop Chair of the 6th ACM SIGMM International Workshop on Multimedia Information Retrieval (MIR04) - in conjunction with ACM Multimedia 2004
• Workshop Chair of the International Workshop on Human Computer Interaction (HCI04) - in conjunction with the 8th European Conference on Computer Vision (ECCV 2004)
• Workshop Chair of the 5th ACM SIGMM International Workshop on Multimedia Information Retrieval (MIR03) - in conjunction with ACM Multimedia 2003
• Technical Program Chair and Editor of the Proceedings for International Conference on Image and Video Retrieval - CIVR'2003