I am an Assistant Professor at University of Twente's Data Management & Biometrics (DMB) group. My research focus is on video understanding tasks and model interpretability methods. I have previously been a Postdoc at VUB and a Research Associate at the University of Bristol working with Dima Damen on video understanding.
I obtained my PhD from Utrecht University where I was lucky to be supervised by Ronald Poppe and
Remco C. Veltkamp.
My thesis topic was on human action and interaction recognition in everyday
social settings.
@article{jain2025mimic,
title={MIMIC: Multimodal Inversion for Model Interpretation and Conceptualization},
author={Jain, Animesh and Stergiou, Alexandros},
journal={arXiv},
year={2025}}
Stergiou A., and Poppe R., About Time: Advances, Challenges, and Outlooks of Action Understanding IJCV, 2025
@inproceedings{sinha2024every,
title={Every Shot Counts: Using Exemplars for Repetition Counting in Videos},
author={Sinha, Saptarshi, and Stergiou, Alexandros and Damen, Dima},
booktitle={ACCV},
year={2024}}
Stergiou A., De Weerdt B., and Deligiannis N., Holistic Representation Learning for Multi-Task Trajectory Anomaly Detection WACV 2024
@inproceedings{stergiou2023leaping,
title={Leaping Into Memories: Space-Time Deep Feature Synthesis},
author={Stergiou, Alexandros and Deligiannis, Nikos},
booktitle={ICCV},
year={2023}}
Stergiou A., and Damen D., The Wisdom of Crowds: Temporal Progressive Attention for Early Action Prediction CVPR 2023
@inproceedings{stergiou2023wisdom,
title={The Wisdom of Crowds: Temporal Progressive Attention for Early Action Prediction},
author={Stergiou, Alexandros and Damen, Dima},
booktitle={CVPR},
year={2023}}
Stergiou A., and Damen D., Play It Back: Iterative Attention for Audio Recognition ICASSP 2023
@inproceedings{stergiou2023playitback,
title={Play It Back: Iterative Attention for Audio Recognition},
author={Stergiou, Alexandros and Damen, Dima},
booktitle={IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
year={2023}}
Stergiou A., and Poppe R., AdaPool: Exponential Adaptive Pooling for Information-Retaining Downsampling IEEE Transactions on Image Processing, 2023
@article{stergiou2021mind,
title = {The Mind's Eye: Visualizing Class-Agnostic Features of CNNs},
author={Stergiou, Alexandros},
booktitle={ICIP},
year={2021}}
Stergiou A., Poppe R., and Kalliatakis G., Refining activation downsampling with SoftPool ICCV 2021
@article{stergiou2021refining,
title={Refining activation downsampling with SoftPool},
author={Stergiou, Alexandros and Poppe, Ronald and Kalliatakis, Grigorios},
booktitle={ICCV},
year={2021}}
Stergiou A., and Poppe R., Multi-Temporal Convolutions for Human ActionRecognition in Videos IJCNN 2021
@article{stergiou2021multi,
title={Multi-Temporal Convolutions for Human Action Recognition in Videos},
author={Stergiou, Alexandros and Poppe, Ronald},
booktitle={IJCNN},
year={2021}}
Stergiou A., and Poppe R., Learn to cycle: Time-consistent feature discovery for action recognition Pattern Recognition Letters, 2021
@article{stergiou2020learn,
title = {Learn to cycle: Time-consistent feature discovery for action recognition},
author={Stergiou, Alexandros and Poppe, Ronald},
journal = {PRL},
year ={2021}}
@article{stergiou2019class,
title={Class Feature Pyramids for Video Explanation},
author={Stergiou, Alexandros and Kapidis, Georgios and Kalliatakis, Grigorios and
Chrysoulas, Christos Poppe, Ronald and Veltkamp, Remco},
booktitle={ICCVW},
year={2019}}
@article{stergiou2019saliency,
title={Saliency Tubes: Visual Explanations for Spatio-Temporal Convolutions},
author={Stergiou, Alexandros and Kapidis, Georgios and Kalliatakis, Grigorios and
Chrysoulas, Christos and Veltkamp, Remco and Poppe, Ronald},
booktitle={ICIP},
year={2019}}
Stergiou A., and Poppe R., Analyzing human-to-human interactions: a survey Computer Vision and Image Understanding, 2019
@phdthesis{stergiou2021efficient,
title={Efficient Modelling Across Time of Human Actions and Interactions},
author={Stergiou, Alexandros Georgios},
year={2021},
school={Utrecht University}}
ACTIVITIES
SUPERVISION
Master students
S. Joseph (UT, 2025)
A. Jain (UT, 2025)
L.G.K. Nguyen (UT, 2025)
D. Dieperink (UT, 2024)
S. Paun (UT, 2024)
M. Elezi (VUB, 2023)
TEACHING
FoMo (Masters) 2025-now Course Coordinator
MM 2025-now Guest Lecturer
GenAI for robotics 2025-now Guest Lecturer
REDI (Masters) 2023-now Course administrator
Deep Learning (Masters) 2023-2024 Course administrator