利用地面控制点进行图象处理的方法有两种。一种称为“直接映射法”。在这种方法中,陆地卫星图象资料的几何畸变是利用多项式求映射系数来消除的,这种系数是参照一帧图面中的很多地面控制点来决定的,在第二种方法中,则根据适当的数学模型、建立卫星和地面坐标与输出图象坐标间的关系式。 There are two ways to use the ground control points for image processing. One is called “direct mapping method.” In this method, the geometric distortion of terrestrial satellite image data is eliminated using polynomial mapping coefficients, which are determined by reference to a number of ground control points in a picture. In the second approach, Then according to the appropriate mathematical model, the establishment of the satellite and the coordinates of the ground and output image coordinates between the relationship.