LAMOST焦面板视觉检测中透视误差的研究  

Perspective Projection Error in Visual Inspection of the LAMOST Focal Plane

作　　者：刘斌[1] 王建平[1] 李晓峰[1] 

机构地区：[1]中国科学技术大学精密机械与精密仪器系,安徽合肥230027

出　　处：《机械与电子》2010年第5期11-14,共4页Machinery & Electronics

基　　金：国家九五重大科学工程项目(98BJG001)

摘　　要：针对LAMOST焦面板上光纤孔位置精度的视觉检测中,透视投影变换存在透视误差的问题进行了研究.利用三维坐标系的平移、旋转变换将焦面板坐标系变换到摄像机坐标系,根据空间透视投影理论,将焦面板上孔的坐标点投影到像平面上并引入空间透视误差数学模型,利用Matlab编写程序计算出任意一个孔的透视误差值,并对其进行了仿真分析,得出了LAMOST焦面板视觉检测中透视误差的变化规律.In visual inspection of the LAMOST focal plane, there exists perspective error of perspective projection transformation. Transform focal plane coordinate system to camera coordinate system base on the rotation transformation of three- dimensional coordinate system. Perspective points of the focal plane to the image plane of the CCD camera base on the theory of perspective projection,and a mathematical model of this perspective error is build. Write a program using Matlab to calculate perspective error of an arbitrary one - hole and its simulation analysis carried out. Varia- tion of perspective error in visual inspection of the LAMOST focal plane provides an available theo- retical reference for the inspection of the focal plane.

关 键 词：LAMOST 透视投影误差 透视投影变换 视觉检测 

分 类 号：TH751[机械工程—仪器科学与技术]