Associate editor, IEEE Transactions on Image Processing (TIP), 2018-2021.
Area Chair, IEEEE Face and Gesture (FG) 2019.
Associate editor for Elsevier Pattern Recognition Journal (Nov 2016 to present).
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.
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.