Multi-perspective long-focus camera calibration algorithm based on parallel perspective projection model

Siyu Ni; Bin Xue; Jinyou Tao

doi:10.1117/12.3007788

18 December 2023 Multi-perspective long-focus camera calibration algorithm based on parallel perspective projection model

Siyu Ni, Bin Xue, Jinyou Tao

Author Affiliations +

Proceedings Volume 12963, AOPC 2023: Optical Sensing, Imaging, and Display Technology and Applications; and Biomedical Optics; 129631A (2023) https://doi.org/10.1117/12.3007788
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

To overcome the limitations of conventional long-focus camera calibration, this paper proposes an improved algorithm for calibrating multi-perspective long-focus cameras based on the parallel perspective projection model. The algorithm employs an affine approximation projection model to describe the imaging process of long-focus cameras. By capturing images of the same static scene from different viewpoints and utilizing multi-view images and bundle adjustment, the algorithm jointly estimates camera parameters, including focal length, distortion coefficients, and rotation matrices, facilitating rapid, flexible, and accurate calibration of long-focus cameras. Finally, the proposed algorithm is compared with the Zhang Zhengyou calibration algorithm by calibrating a Canon EOS 60D18-200 camera with a 100mm focal length. The precision and stability of the proposed algorithm are verified through comparison, laying a foundation for subsequent tasks in computer vision, such as 3D reconstruction and image fusion.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Siyu Ni, Bin Xue, and Jinyou Tao "Multi-perspective long-focus camera calibration algorithm based on parallel perspective projection model", Proc. SPIE 12963, AOPC 2023: Optical Sensing, Imaging, and Display Technology and Applications; and Biomedical Optics, 129631A (18 December 2023); https://doi.org/10.1117/12.3007788

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KEYWORDS

Cameras

Calibration

3D modeling

Camera calibration

Reconstruction algorithms

Image processing

3D projection

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