基于平面模板的摄像机标定方法  

Camera calibration method based on planar pattern

作　　者：王军[1] 许建龙[1] 

机构地区：[1]浙江理工大学信息电子学院,浙江杭州310018

出　　处：《计算机工程与设计》2009年第1期259-260,F0003,共3页Computer Engineering and Design

摘　　要：给出了一种基于平面模板的摄像机标定的新算法。所用的标定模板由一个内嵌矩形的圆组成,通过模板图像在像平面上的投影计算圆环点,建立绝对二次曲线对摄像机内参数的约束方程,只需要摄像机在3个(或3个以上)不同方位摄取平面模板中的图像,即可线性求解摄像机的内参数。该方法原理简单,对摄像机运动没有约束,不涉及图像匹配,平面模板容易制作,无须知道物理度量,实验证明本方法可行,并有较好的鲁棒性。A new method for camera calibration based on planar pattern is introduced. The planar pattern is composed of a circle with a embedded rectangle, the image of the two circular points are derived fi＇om the image of planar pattern, then the constraints on the intrinsic parameters are established via IAC （image of absolute conic）. The introduced method only requires the camera take the pictures at three （or at least three） different unknown orientations, the intrinsic parameters is determined linearly. In this method, there is no restriction on camera＇ s motion, the image correspondence is not involved, the planar pattern is easy to make and not need know its metric measurement. Experiments show that this method is workable and of good robustness.

关 键 词：摄像机标定 平面模板 针孔模型 绝对二次曲线 圆环点 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]