Visual Recognition Group · CTU Prague

Research at the intersection of camera geometry, algebra, and learning.

I am a Ph.D. student at the Visual Recognition Group, Czech Technical University in Prague, supervised by Professor Zuzana Kúkelová. My research focuses on approximate solutions to minimal problems in computer vision using machine learning algorithms.

Bio

I obtained my BSc in Computer Science from NKU Athens in 2019, and my MSc in Algorithms, Logic and Discrete Mathematics from NKU Athens in 2021. I have also worked on counting solutions of polynomial systems that correspond to certain combinatorial objects. Since 2018, I have been a member of ErGa Lab, working with Professor Ioannis Emiris.

News

Recent and upcoming milestones

  1. I will start a research internship at Snap Inc. Vienna Spectacles.

  2. Our radial distortion paper was published in International Journal of Computer Vision.

  3. Our paper on practical three-view relative pose solvers appeared at CVPR 2025.

  4. One paper accepted to Discrete Applied Mathematics.

  5. Started my Ph.D. at the Visual Recognition Group, Czech Technical University.

  6. One paper was selected to appear in the ACM Showcase.

  7. One paper got accepted at ISSAC 2022.

  8. Started as a Research Fellow at the Visual Recognition Group, Czech Technical University.

Publications

Journal and conference work
Thumbnail for the IJCV 2026 paper on radial distortion solvers
IJCV 2026

Are Minimal Radial Distortion Solvers Really Necessary for Relative Pose Estimation?

V. Kocur*, C. Tzamos*, Y. Ding, Z. B. Haladová, T. Sattler, and Z. Kúkelová. International Journal of Computer Vision, 134, article 48, 2026.

Paper Code
Thumbnail for the CVPR 2025 paper on relative pose of three calibrated cameras
CVPR 2025

Practical Solutions to the Relative Pose of Three Calibrated Cameras

C. Tzamos*, V. Kocur*, Y. Ding, D. Barath, Z. B. Haladová, T. Sattler, and Z. Kúkelová. Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition, pp. 21913-21923, 2025.

Paper Code
Thumbnail for the GARLIC arXiv preprint
arXiv 2025

GARLIC: GAussian Representation LearnIng for spaCe partitioning

P. Rigas, P. Drivas, C. Tzamos, I. Chamodrakas, G. Ioannakis, L. J. Guibas, and I. Z. Emiris. arXiv:2505.24608, 2025.

Paper
Thumbnail for the ECCVW 2024 paper on radial distortion solvers
ECCVW 2024

Are Minimal Radial Distortion Solvers Necessary for Relative Pose Estimation?

C. Tzamos*, V. Kocur*, Y. Ding, T. Sattler, and Z. Kúkelová. Computer Vision - ECCV 2024 Workshops, Lecture Notes in Computer Science, vol. 15623.

Paper Code
Thumbnail for the graph embeddings paper
J. DAM 2023

An asymptotic upper bound for graph embeddings

E. Bartzos, I. Z. Emiris, and C. Tzamos. Discrete Applied Mathematics, vol. 327, pp. 157-177, 2023.

Paper
Thumbnail for the ISSAC 2022 paper
ISSAC 2022

Bounding the Number of Roots of Multi-Homogeneous Systems

E. Bartzos, I. Z. Emiris, I. S. Kotsireas, and C. Tzamos. Proceedings of the 2022 International Symposium on Symbolic and Algebraic Computation.

Paper
Thumbnail for the CASC 2021 paper
CASC 2021

The m-Bézout Bound and Distance Geometry

E. Bartzos, I. Z. Emiris, and C. Tzamos. Computer Algebra in Scientific Computing, Lecture Notes in Computer Science, vol. 12865.

Paper