From Corners to Fiducial Tags: Revisiting Checkerboard Calibration for Event Cameras

Taehun Ryu · Changwoo Kang · Kyungdon Joo

This repository is the official implementation of the paper "From Corners to Fiducial Tags: Revisiting Checkerboard Calibration for Event Cameras".

Code release is planned after June 2026 (exact date TBD).

_{Project video. Watch on YouTube.}

News

• 26.04.09. 🎉 Our CVPR paper was selected as Highlight!
• 26.02.23. 🎉 corner2tag was accepted to CVPR 2026! (acceptance rate: 25.42%)

How to use

For detailed setup and usage instructions, please refer to the full documentation.

Acknowledgments

This work is built on several great research works, thanks a lot to all the authors for sharing their works.

• Event Cameras, Contrast Maximization and Reward Functions: An Analysis [CVPR 2019]
• Target-free Extrinsic Calibration of Event-LiDAR Dyad using Edge Correspondences [RA-L 2023]

Citation

@InProceedings{ryu2026corner2tag,
    author    = {Taehun Ryu and Changwoo Kang and Kyungdon Joo},
    title     = {From Corners to Fiducial Tags: Revisiting Checkerboard Calibration for Event Cameras},
    booktitle = {IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)},
    year      = {2026},
}