Study on the satellite image polynomial model with topographic correction

According to the point that image displacement due to hypsography can be expressed in a mathematic formula and the shortcoming that the polynomial model is only fitted to plat areas, a new model added with topographic correction is proposed in this paper. Through analyzing the principle of image point displacement, the paper constructs image polynomial model based on topographic correction technology, designs and realizes corresponding algorithms and orientation method of polynomial model that has been modified. Experiments show that the accuracy of this model is higher than that of normal polynomial model in X direction in mountain areas.