道路交通事故现场摄影测量的标定技术

Calibration technique of photoerammetry of traffic accident scene

在分析三维摄影测量标定方法的基础上,提出了基于平面模板的照相机标定方法,即从不同视点拍摄多幅现场图像,先进行线性求解,然后基于极大似然准则进行非线性优化,获得照相机模型参数。实验结果表明该方法标定精度高,标定物简单,更加灵活易用。

Based on analysis of the calibration method of three-dimensioned photogrammetry, a new method of camera calibration using planar patterns was proposed. After several photos were obtained from different views, a linear solution was derived, followed by a nonlinear refinement based on the maximum likelihood criterion, the final parameters of the model were achieved. The experiment results demonstrate the proposed method is not only simple and accurate, but also flexible.