几何失真景像边缘距离变换匹配的定位精度研究

Research on Registration Accuracy of Distance Transformation Matching Method for Geometrically Distorted Scene Images

本文首先建立摄像机高度和姿态发生增量变化时景像几何失真的理论模型，然后，对边缘距离变换匹配方法的匹配精度进行了理论分析，导出了边缘距离变换匹配定位精度的解析表达式．真实卫片和航片大量的模拟实验表明提出的匹配精度模型是正确的，从而为图像匹配自主导航系统的设计提供理论和应用基础．

When the attitude and height of the camera is changed by a small increment,a theoretical model of geometrically distorted scenes is estabilished,the registration accuracy of edge distance transformation matching method and its analytic expression is analyzed and derived. Many simulated experiments with real satellite images and aerial images demonstrate the validity of this proposed registration accuracy model,which provides a theoretical and practical basis for design of self-guided systems using image matching.