1) Editorial board, Image and Vision Computing journal, 2005-present
2) Associate Editor, IEEE Transactions on Intelligent Transportation, 2006-present
3) Associate editor, IEEE Transactions on Cybernetics, 2006-
4) Associate editor, IEEE Transactions on Affective Computing, 2009-
5) Associate Editor, Pattern Recognition Letters journal, 2006-2011
6) Associate editor, Journal of Pattern Analysis and Applications, 2007-2009.
7) Guest editor, special issue on the Best of Facial and Gesture Papers, Vision and Computing, 2013
8) Lead guest editor, special issue on probabilistic graphical models and its applications in
computer vision, IEEE Transactions on Pattern Analysis and Machine Intelligence, 2008-2009.
9) Lead guest editor-Computer Vision and Image Understanding, special issue on eye detection and tracking, 2003.
Chair or Co-chairs of conferences, symposiums, and workshops:
1) IEEE Computer Society Fellow Committee, 2015
2) General Co-chair, 6th International Conference on Affective Computing and Intelligent Interaction, 2015.
3) Workshop co-chair, IEEE FG 2015 workshop on Biometrics in the Wild
4) Co-Chair, 1st International Workshop on Face and Facial Expression Recognition from Real World Videos in Conjunction with ICPR 2014.
5) Co-chair, IEEE ICME workshop on multimedia affective computing, 2014
6) Workshop/Tutorial Chair, IEEE Conference on Automatic Face and Gesture Recognition, 2015.
7) General chair, IEEE Conference on Automatic Face and Gesture Recognition, 2013
8) Area Chair, ACM Eye Tracking Research and Application Symposium, 2012.
9) Workshop Chair, IEEE Conference on Advanced Video and Signal-Based Surveillance, 2012.
10) Senior Program Committee, the Int Conf on Affective Computing and Intelligent Interaction (ACII), 2011-2013.
11) Technical Area Chair, IEEE Conference on Face and Gesture Recognition, March, 2008-2015.
12) Pattern Recognition and Machine Learning Program Chair, International Conference on Pattern Recognition,2012
13) Program Chair, ACM Eye Tracking Research and Application Symposium, 2010.
14) Technical Area Chair, IEEE International Conference on Computer Vision and Pattern Recognition, 2008.
15) Co-Chair, IEEE Workshop on Motion and Video Computing, 2008
16) Co-chair, IEEE Workshop on Semantic Learning and Applications in Multimedia, 2008, 2009..