机器视觉中摄像机标定Tsai两步法的分析与改进

为提高摄像机标定精度,本文在分析Tsai两步标定法优缺点的基础上,提出了一种新的标定方法。该方法针对面阵CCD摄像机,建立新的综合畸变模型,并运用两步迭代法逐步逼近精确解,取消了Tsai两步法中对摄像机镜头只有径向畸变的限定,可用于多种复杂的镜头畸变情况。改进的方法只使用一平面标定板和单幅图象,操作简便,相比Tsai两步法中无法用平面标定板直接求解全部标定参数而言是一个突破。实验结果表明,改进方法速度快且精度较高,可广泛应用于机器视觉研究、工业三维测量等多个领域的摄像机标定。

Analyzing and Improving the Tsai Camera Calibration Method in Machine Vision

To improve the accuracy of camera calibration,after analyzing the Tsai two-stage method,the article gives a new camera calibration method based on the CCD area sensors array,and the new composite distortion model. It uses an iterative method without a radical distortion limit,and can be used in many kinds of camera lens distortion cases,and the improved method uses a coplanar set of points,monoview,and the experimental result shows that the algorithm is fast with high accuracy. This camera calibration metho...