Program co-chair, IEEE Face and Gesture (FG) 2021.
Senior Program Committee Member, International Joint Conference on Artificial Intelligence (IJCAI), 2019.
Technical Area Chair, Asilomar Conference on Signals, Systems, and Computers 2019.
Associate editor, IEEE Transactions on Image Processing (TIP), 2018-2021.
Area Chair, IEEE Face and Gesture (FG) 2019.
Associate editor for Elsevier Pattern Recognition Journal (Nov 2016 to Nov 2018).
Special issue guest-editor for ACM Transactions on Multimedia (TOMM) on “Representation, Analysis and Recognition of 3D Humans”, 2017.
Special issue guest-editor for Elsevier Pattern Recognition special issue on “Discriminative Feature Learning from Big Data for Visual Recognition”, Aug 2014-Aug 2015.
Area chair for “Computer Vision and Robot Vision” track for IEEE Conference on Pattern Recognition (ICPR) 2016 and 2018.
Founding workshop co-chair on “Differential Geometry in Computer Vision and Machine Learning (Diff-CVML)”, held in conjunction with the British Machine Vision Conference (BMVC) Sep 2015, and CVPR 2016-18,2020.
Local arrangements chair for “IEEE International Conference on Image Processing (ICIP)” 2016.
Co-chair of poster session on “Computational Imaging for Healthcare”, held at the IEEE International Conference on Computational Photography (ICCP) Jan 2015.
Panel-chair for “Video Summarization” at the joint NSF-FBI-DARPA workshop on Frontiers in Image and Video Analysis, Jan 2014.
Co-delivered tutorial on “Video-Based Face Recognition”, at the IEEE Fifth International Conference on Biometrics: Theory, Applications and Systems (BTAS), September 2012.
Co-delivered tutorial on “Differential Geometric techniques for Shape and Activity Analysis”, at IEEE CVPR, Rhode Island, June 2012. This is a premier computer vision venue.
Chair of IEEE Phoenix Chapter of Signal Processing and Communication (SP-COM) April 2012-August 2015.