Based on Zhang Zhengyou' s calibration method and using the collinear characteristics of target points, we experimentally study the radial distortion rectification and evaluate the distortion correction accuracy. It is verified that the correction accuracy can reach sub-pixel level and meet with the accuracy requirements of most visual measurement applications.%基于张正友标定方法,采用目标点的共线特征开展径向畸变校正的实验研究,并对畸变校正精度进行评估.经实验,校正精度达到亚像素级,能够满足大多数视觉测量应用的精度要求.
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