基于投影变换的线阵旋转扫描相机标定方法

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。

Calibration method of line-scan camera based on projection transformation

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.