基于投影变换的线阵旋转扫描相机标定方法

doi:10.13474/j.cnki.11-2246.2019.0121

测绘通报 ›› 2019, Vol. 0 ›› Issue (4): 96-98,102.doi: 10.13474/j.cnki.11-2246.2019.0121

基于投影变换的线阵旋转扫描相机标定方法

苏琳, 巫兆聪, 闫钊, 王鹏

武汉大学遥感信息工程学院, 湖北武汉 430079

收稿日期:2018-07-24 修回日期:2019-01-16 出版日期:2019-04-25 发布日期:2019-05-07
作者简介:苏琳(1992-),男,硕士生,主要研究领域为计算机视觉、相机标定、三维重建。E-mail:2016202130055@whu.edu.cn

Calibration method of line-scan camera based on projection transformation

SU Lin, WU Zhaocong, YAN Zhao, WANG Peng

School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China

Received:2018-07-24 Revised:2019-01-16 Online:2019-04-25 Published:2019-05-07

摘要/Abstract

摘要：

针对线阵旋转扫描相机标定数据难以获取及模型解算不稳定的问题，提出了一种基于投影变换的线阵旋转扫描相机标定方法。首先构建了一种新的线阵旋转扫描相机成像模型，该模型可以根据相机旋转平台参数、线阵旋转扫描相机成像平面与其切平面的位置关系将旋转扫描图像投影为框幅式图像；然后根据构建出的成像模型，采用直接线性变换法和非线性优化方法进行相机标定和参数优化。试验结果表明，此方法简单易行，具有较高的精度。

关键词: 相机标定, 投影变换, 线阵相机, 旋转扫描, 成像模型, 非线性优化

Abstract:

In view of the difficulty of obtaining the calibrated data of the line-scan camera and the instability of the model solution, a calibration method based on the projection transformation is proposed. First, a new imaging model of linear rotation scanning camera is constructed. The model can be projected into a frame image based on the parameters of the rotating platform of the camera and the position relationship between the image plane and the tangent plane. Then, according to the imaging model constructed, the direct linear transformation method and nonlinear optimization method are used for camera calibration and parameter optimization. The experimental results show that the method is simple and feasible with high accuracy.

Key words: camera calibration, projection transformation, line-scan camera, rotation scanning, imaging model, nonlinear optimization

中图分类号:

苏琳, 巫兆聪, 闫钊, 王鹏. 基于投影变换的线阵旋转扫描相机标定方法[J]. 测绘通报, 2019, 0(4): 96-98,102.

SU Lin, WU Zhaocong, YAN Zhao, WANG Peng. Calibration method of line-scan camera based on projection transformation[J]. 测绘通报, 2019, 0(4): 96-98,102.

参考文献

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基于投影变换的线阵旋转扫描相机标定方法

Calibration method of line-scan camera based on projection transformation

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