660 17437


Adjunct Associate Professor
Co-founder, Opsis Pte Ltd
Director of R&D, Asus Intelligent Cloud Services (AICS)

  • Ph.D. (Electrical Engineering, Ecole Polytechnique Fédérale de Lausanne, Switzerland, 2001)
  • Dipl.-Ing. (Electrical Engineering, Technische Universität Wien, Austria, 1996)

Stefan Winkler is Director of R&D at ASUS Intelligent Cloud Services (AICS) and Adjunct Associate Professor (Practice) at the National University of Singapore. Prior to that he was Distinguished Scientist and Director of the Video & Analytics Program at the University of Illinois’ Advanced Digital Sciences Center (ADSC) in Singapore. He also co-founded two start-ups and worked for a Silicon Valley company. Dr. Winkler has a Ph.D. degree from the Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland, and a Dipl.-Ing. (M.Eng./B.Eng.) degree from the University of Technology Vienna, Austria. He is an IEEE Fellow and has published over 150 papers and the book “Digital Video Quality.” He was Associate Editor of the IEEE Transactions on Image Processing (2009-2018) and the IEEE Signal Processing Magazine (Standards Column) (2012-2015). He has served on the organizing committees of numerous conferences and workshops, including area chair of ICIP and ICME, general chair of QoMEX 2014, as well as the QoMEX Steering Committee (2014-2017). He has also contributed to video quality standards in VQEG, ITU, ATIS, VSF, and SCTE. His research interests include video processing, computer vision, machine learning, perception, and human-computer interaction


  • Computer vision

  • Video analysis

  • Human-computer interaction





  • Y. Yazici, C.-S. Foo, S. Winkler, K.-H. Yap, G. Piliouras, V. Chandrasekhar. The unusual effectiveness of averaging in GAN training. Proc. International Conference on Learning Representations ICLR, New Orleans, LA, May 6-9, 2019.
  • L. Zhang, S. Peng, S. Winkler. PersEmoN: A deep network for joint analysis of apparent personality, emotion and their relationship. eprint arXiv:1811.08657, Nov. 2018.
  • V. Vonikakis, R. Subramanian, J. Arnfred, S. Winkler. Probabilistic approach to people-centric photo selection and sequencing. IEEE Transactions on Multimedia, vol.19, no.11, pp. 2609-2624, Nov. 2017.
  • S. Dev, B. Wen, Y. H. Lee, S. Winkler. Machine learning techniques and applications for ground-based image analysis. IEEE Geoscience and Remote Sensing Magazine, Special Issue on Advances in Machine Learning for Remote Sensing and Geosciences, vol.4, no.2, pp. 79-93, June 2016.
  • R. C. Streijl, S. Winkler, D. S. Hands. Mean Opinion Score MOS revisited: Methods and applications, limitations and alternatives. Multimedia Systems Journal, vol.22, no.2, pp. 213-227, Feb. 2016.
  • S. Winkler, D. Min. Stereo/multiview picture quality: Overview and recent advances. Signal Processing: Image Communication, vol.28, no.10, pp.1358-1373, Nov. 2013.
  • S. Winkler. Analysis of public image and video databases for quality assessment. IEEE Journal on Selected Topics in Signal Processing, Special Issue on New Subjective and Objective Methodologies for Audio and Visual Signal Processing, vol.6, no.6, pp.616-625, Oct. 2012.
  • S. Winkler. Digital Video Quality - Vision Model and Metrics. John Wiley & Sons, January 2005.


  • IEEE Fellow (class of 2018), for contributions to perceptual video quality measurement

  • Best Paper Award, IEEE Transactions on Affective Computing (2017-2019)