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Dr. Stefanos Vrochidis

Researcher B’

  • Dipl. Electrical & Computer Engineering
  • MSc in Radio Frequency Communication Systems
  • PhD, Interactive Video Retrieval Using Implicit User Feedback, Queen Mary University of London (2013)

Dr. Stefanos Vrochidis received the Diploma degree in Electrical Engineering from Aristotle University of Thessaloniki, Greece and the MSc degree in Radio Frequency Communication Systems from University of Southampton, in 2000 and 2001 respectively. He also holds a PhD degree on Interactive video retrieval using implicit user feedback, Queen Mary University of London (2013). He is a Senior Researcher (Grade Β’) at the Information Technologies Institute (ΙΤΙ) of the Centre for Research and Technology Hellas (CERTH).

He has participated in a number of EC-funded and National ICT projects (e.g. ELU, PATExpert, REACH, PESCaDO, CHORUS) and his research interests include multimedia analysis, indexing and retrieval, human computer interaction in multimedia retrieval, patent search, environmental and learning applications. His scientific work has been published in peer-reviewed journals, international conferences and book chapters.

Recent Publications

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  • M. Pegia, D. Stefanopoulos, B. Þ. Jónsson, A. Moumtzidou, I. Gialampoukidis, S. Vrochidis, I. Kompatsiaris, "Learning Perceptual Hash Similarity for Image Copy Detection.", in Proceedings of the IEEE International Conference on Content-Based Multimedia Indexing (CBMI), Toulouse, France, 21-23 October 2026, doi: 10.5281/zenodo.21102917
  • K. Gkountakos, S. Pasios, K. Ioannidis, K. Demestichas, S. Vrochidis, I. Kompatsiaris, "Potato-Free: Eliminating Model Training for Disease Detection and Localization in Potato Tubers", Agriculture, vol. 16, no. 13, p. 1408, 2026 doi: 10.3390/agriculture16131408
  • K. Palapanidis, T. Tsikrika, K. Ioannidis, S. Vrochidis, I. Kompatsiaris, "Invariant-Based Channel Attention for Robust Visible-Infrared Fusion Under Sensor Degradation.", IEEE Access, vol. 14, pp. 97629–97648, June 2026, doi: 10.1109/ACCESS.2026.3706896
  • Y. Karpichev, O. Bragina, A. Udal, K. Zovo, G. Dolias, G. Kirtsanis, S. Vrochidis, S. Kintzios, A. V. Valderrama, M. Bentahir, "Integration of MALDI-TOF MS technique with artificial intelligence for enhanced detection of biological warfare agents.", in Proceedings of the NBC-2025 Symposium, Kokkola, Finland, 9–12 June 2025.
  • N. Fasfalis, P. Kyriakidis, D. Chatzakou, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Interactive Clustering through Deep Metric Learning: A Study on Loss Functions.", in Proceedings of the 18th ACM Web Science Conference (WebSci), Braunschweig, Germany, May 2026, pp. 1–11.
Contact
Dr. Stefanos Vrochidis
Building A - Office 1.4

Information Technologies Institute
Centre of Research & Technology - Hellas
6th km Harilaou - Thermis, 57001, Thermi - Thessaloniki
Tel.: +30 2311 257754
Fax: +30 2310 474128
Email: stefanos@iti.gr