利用ERDAS IMAGINE进行影像的几何精校正

Utilizing ERDAS IMAGINE to Adjust Geometric Correction of Image

几何精校正是利用地面控制点 (GCP)对遥感影像进行的几何校正。用ERDASIMAGINE软件进行几何精校正 ,关键在于相关模型参数设置、控制点输入和几何精校正。影响几何精校正的因素 ,主要表现在GCP的数量、分布和定位精度。此外校正方法不同 ,影像的纠正精度也不同。

Geometric correction adjustment is using ground control points(GCP) to adjustthe geometric correction of remote image. The key of usingERDAS IMAGINE software to adjust the geometric correction lies in setting of correlationmodel parameters?inputting of control points and adjustment of geometric correction. The factors that effect on adjustment of geometric correction mainly represent in the quantity?distribution of GCP and theirorientation accuracy. Moreover, the correction accuracy of images differs because of the difference of adjustment methods.