Visual navigation devices require precise calibration to achieve high-precision localization and navigation, which includes camera and attitude calibration. To address the limitations of time-consuming camera calibration and complex attitude adjustment processes, this study presents a collimator-based calibration method and system. Based on the optical characteristics of the collimator, a single-image camera calibration algorithm is introduced. In addition, integrated with the precision adjustment mechanism of the calibration frame, a rotation transfer model between coordinate systems enables efficient attitude calibration. Experimental results demonstrate that the proposed method achieves accuracy and stability comparable to traditional multi-image calibration techniques. Specifically, the re-projection errors are less than 0.1463 pixels, and average attitude angle errors are less than 0.0586 degrees with a standard deviation less than 0.0257 degrees, demonstrating high precision and robustness.
@article{arxiv.2502.18012,
title = {High-precision visual navigation device calibration method based on collimator},
author = {Shunkun Liang and Dongcai Tan and Banglei Guan and Zhang Li and Guangcheng Dai and Nianpeng Pan and Liang Shen and Yang Shang and Qifeng Yu},
journal= {arXiv preprint arXiv:2502.18012},
year = {2025}
}