测绘与空间地理信息
測繪與空間地理信息
측회여공간지리신식
GEOMATICS & SPATIAL INFORMATION TECHNOLOGY
2014年
8期
8-10
,共3页
范玉茹%张巧茹%刘晓莉%邵彬
範玉茹%張巧茹%劉曉莉%邵彬
범옥여%장교여%류효리%소빈
遥感影像%影像纠正%多项式模型%投影差
遙感影像%影像糾正%多項式模型%投影差
요감영상%영상규정%다항식모형%투영차
remote sensing%image correction%the polynomial model%projection displacement
首先分析了地形起伏引起的像点位移原理,在此基础上,针对一般多项式只适用于平坦地区卫星影像正射纠正的不足,根据地形起伏引起的像点位移的数学推导公式,在多项式纠正方法中引入投影差改正,实验表明,该模型较一般多项式模型在x方向上精度有所提高,适用于高山地影像的正射纠正。
首先分析瞭地形起伏引起的像點位移原理,在此基礎上,針對一般多項式隻適用于平坦地區衛星影像正射糾正的不足,根據地形起伏引起的像點位移的數學推導公式,在多項式糾正方法中引入投影差改正,實驗錶明,該模型較一般多項式模型在x方嚮上精度有所提高,適用于高山地影像的正射糾正。
수선분석료지형기복인기적상점위이원리,재차기출상,침대일반다항식지괄용우평탄지구위성영상정사규정적불족,근거지형기복인기적상점위이적수학추도공식,재다항식규정방법중인입투영차개정,실험표명,해모형교일반다항식모형재x방향상정도유소제고,괄용우고산지영상적정사규정。
Through analyzing the principle of image displacement , the paper constructs image polynomial model added with topograph-ic correction, based on 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 fitting to plat areas .Experiments show that the accuracy of this model is higher than that of normal polynomial model in X direction in mountain areas .