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ViCoS Lab

Vitjan Zavrtanik

Researcher / PhD Student
vitjan.zavrtanik@fri.uni-lj.si

Hi! I’m a final-year PhD candidate at the Visual Cognitive Systems Lab at the University of Ljubljana, Faculty of Computer and Information Science specializing in computer vision. My research is supervised by Prof. Danijel Skočaj, PhD and focuses on anomaly detection methods. I also collaborate closely with Prof. Matej Kristan, PhD and other colleagues on topics such as few-shot counting. I have previously worked as an intern at Amazon and CERN.

Research

My PhD research topic focuses on anomaly detection, however I am interested a broad range of topics.

Visual anomaly detection

This research focuses on the development of unsupervised visual anomaly detection methods. Trained on anomaly-free samples only, these methods attempt to remove the need for a difficult acquisition of a diverse set of anomalous objects while aiming to match the performance of supervised methods.

Low-shot counting

The main goal of this research is development of computer-vision-based automated counters that do not require large training datasets, but are adapted to a previously unseen category by using only a few training examples (few-shot), no training examples (zero-shot) or text-based prompts (text-prompt-based).

Dense object counting in underwater imagery

The main goal of this research is development of computer-vision-based automated counters applicable underwater imagery. Such counters are crucial for processing extremely large datasets, vastly reducing the required manual labor and facilitating census orders of magnitude grater than what is possible with standard techniques. The methods leverage learning on specific type of images to maximize a task-specific detection performance.

Publications

I am an author on articles published at top-tier conferences such as ICCV, ECCV, CVPR and NeurIPS.

My full bibliography can be seen in my Google Scholar.

Publication List:

Awards

  • 2023: Award for exceptional scientific achievement in the Republic of Slovenia in the year 2023 (ARIS).
  • 2022: Award for exceptional scientific achievement in the Republic of Slovenia in the year 2022 (ARIS).
  • 2021 Honorable mention of the research achievements of PhD students in 2020, awarded by FRI UNI-LJ (four awards given).
  • 2020 Award for outstanding research achievements of PhD students in 2020 (three awards given), awarded by The Faculty of computer and information science (FRI) UNI-LJ.

Service

Reviewer for CVPR, ECCV, ICCV, NeurIPS, ICLR, WACV, ICASSP.

Faculty of Computer and Information Science

Visual Cognitive Systems Laboratory

University of Ljubljana

Faculty of Computer and Information Science

Večna pot 113
SI-1000 Ljubljana
Slovenia
Tel.: +386 1 479 8245