国土卫星成像过程的数学模拟与几何失真恢复

The Simulation of Satellite Imaging Process and Distortion Correction

本文在对卫星图像几何失真进行分析的基础上,用数学方法模拟了国土卫星空中成像的物理过程,提出了一种新的图像几何处理方法——混合法。该方法先用少量地标点(GCP)和Powell方法估算精化模型中的参数,以消除系统误差;再用平面拟合方法校正残差,有效地提高了处理精度。影像的灰度重采样是用样条函数方法实现的。

Based on the distortion analysis of satellite panoramic images. a new geometric correction method is proposed in this paper.Three main points are included in the method:1. The mathematic simulation of satellite imaging process for systematic errors correction.* Coordinate system transformation* Powell optimization2. Polynomial method for random distortions correction.3. Image reconstruction