High-precision visual navigation device calibration method based on collimator

• URL: http://arxiv.org/abs/2502.18012v1
• Date: Tue, 25 Feb 2025 09:18:45 GMT
• Title: High-precision visual navigation device calibration method based on collimator
• Authors: Shunkun Liang, Dongcai Tan, Banglei Guan, Zhang Li, Guangcheng Dai, Nianpeng Pan, Liang Shen, Yang Shang, Qifeng Yu,
• Abstract summary: This study presents a collimator-based calibration method and system.<n>Based on the optical characteristics of the collimator, a single-image camera calibration algorithm is introduced.<n> Experimental results demonstrate that the proposed method achieves accuracy and stability comparable to traditional multi-image calibration techniques.
• Score: 7.067969652798468
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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.

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