Imperial College London


Faculty of EngineeringDepartment of Computing

Senior Lecturer



+44 (0)20 7594 8461s.zafeiriou Website CV




375Huxley BuildingSouth Kensington Campus





Stefanos Zafeiriou is a Senior Lecturer (equivalent to Associate Professor) in Pattern Recognition/Statistical Machine Learning for Computer Vision in the Department of Computing, Imperial College London. He has been awarded one of the prestigious Junior Research Fellowships (JRF) from Imperial College London in 2011 to start his own independent research group. He is/has participated in more than 10 EU, British and Greek research projects. Dr. Zafeiriou currently serves as an Associate Editor in IEEE Transactions on Cybernetics and  Image and Vision Computing journal. He has been guest editor in more than six special issues and co-organized more than 8 workshops/ special sessions in top venues such as CVPR/FG/ICCV/ECCV.  He has co-authored more than 45 journal papers mainly on novel statistical machine learning methodologies applied to computer vision problems such as 2D/3D face and facial expression recognition, deformable object tracking, human behaviour analysis etc published in the most prestigious journals in his field of research (such as IEEE T-PAMI, IJCV, IEEE T-IP, IEEE T-NNLS, IEEE T-VCG, IEEE T-IFS etc). His students are frequent recipients of very prestigious and highly competitive fellowships such as Google Fellowship, Intel Fellowship and the Qualcomm fellowship. He has more than 2500 citations to his work, h-index 26.

Selected Publications

Journal Articles

Bousmalis K, Zafeiriou S, Morency L-P, et al., 2013, Infinite Hidden Conditional Random Fields for Human Behavior Analysis, IEEE Transaction on Neural Networks and Learning Systems, Vol:24, ISSN:2162-237X, Pages:170-177

Liwicki S, Zafeiriou S, Tzimiropoulos G, et al., 2012, Efficient Online Subspace Learning With an Indefinite Kernel for Visual Tracking and Recognition, IEEE Transaction on Neural Networks and Learning Systems, Vol:23, ISSN:2162-237X, Pages:1624-1636

Liwicki S, Tzimiropoulos G, Zafeiriou S, et al., 2013, Euler Principal Component Analysis, International Journal of Computer Vision, Vol:101, ISSN:0920-5691, Pages:498-518

Tzimiropoulos G, Zafeiriou S, Pantic M, 2012, Subspace Learning from Image Gradient Orientations, IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol:34, ISSN:0162-8828, Pages:2454-2466

Zafeiriou S, Tzimiropoulos G, Petrou M, et al., 2012, Regularized Kernel Discriminant Analysis With a Robust Kernel for Face Recognition and Verification, IEEE Transaction on Neural Networks and Learning Systems, Vol:23, ISSN:2162-237X, Pages:526-534

Tzimiropoulos G, Argyriou V, Zafeiriou S, et al., 2010, Robust FFT-Based Scale-Invariant Image Registration with Image Gradients, IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol:32, ISSN:0162-8828, Pages:1899-1906


Tzimiropoulos G, Zafeiriou S, Pantic M, 2011, Robust and Efficient Parametric Face Alignment, IEEE International Conference on Computer Vision (ICCV), IEEE, Pages:1847-1854

More Publications