关键词: 几何畸变, 几何校正, 控制点, 模型

Abstract: Satellite camera will be subject to great impact from many factors during photography and it causes image distortions on geometric position. The purpose of geometric correction is to minimize the impact of image distortions. This article studies two models: polynomial methods and multiquadric functions which can minimize the image distortions. Through experiments, we introduce a new parameter R which plays an important role in multiquadric functions. Compared with the original value, new R can enhance the geometric correction accuracy. Introduce Göpfert’s algorithm which combines polynomial methods and multiquadric functions to satellite image correction. Experiments show that Göpfert’s algorithm can yield accurate correction results.

Key words: Geometric distortion, Geometric rectification, Control point, Model