基于灭点的透视校正和空间定位的方法研究

由于光学镜头的成像特性,并且摄像机成像平面与景物平面间存在着倾角和转角,因而光学镜头摄像机获取的图片存在非线性的几何畸变,在对图像进行测量和定量分析之前,应消除这些畸变。为此,应用透视投影的灭点形成原理和双线性插值方法,研究了一种图像透视投影的校正方法,在校正后的图像基础上,建立图像坐标系和世界坐标系的关系模型,利用最小二乘法,实现空间定位。实验结果表明,利用该方法可得到的理想的校正结果,定位精度比较准确,方法简便实用,实际应用表明,该方法是可靠有用的。

Perspective Projection Rectification and Localization Based on Vanishing Point

Image with geometricrec distortions,which are induced by camera lens and position,must be corrected before measurement and ration analysts.In this paper,we present a rectification method of perspective projection by applying the theory of forming vanishing point and bilinear interpolation.We demonstrate that the image of perspective projection can be berectified with this method.Establishing the model of image reference frame and world reference frame based on rectificated image,implement space localization...