高分辨率遥感影像几何纠正方法

在对某些地区的高分辨率卫星影像进行几何校正时,由于地形等因素影响难以寻找控制点,从而导致控制点较少且分布不均匀,影响了校正精度。针对这些问题,对线阵推扫式的高分辨率遥感影像的特点进行了分析,提出了利用直线这种更高级的几何特征对影像进行几何校正的方法;构建空间直线矢量,提出了基于空间直线矢量的多项式几何校正模型;并利用SPOT5高分辨率卫星影像数据对该校正模型进行精度验证。

Geometric Correction’s Method of High-resolution Remote Sensing Image

Making geometric correction for high-resolution remote sensing image of some area,it is difficult to find ground control points due to terrain and other factors,therefor the accuracy of geometric correction declines due to less number and heterogeneous distributions of GCP.In order to overcome the questions,this paper using the vector of straight line that is a more advanced geometric characteristic made geometric correction basing on the studying and analyzing about the characteristic of linear array CCD push-broom image.Using a small amount of GCPs constructs vector of spatial straight line,we raised the polynomial correction model basing on the vector of spatial straight line in this paper.At last,the studying analyses and accurate verification were performed by the sport5 high-resolution remote sensing image.