Correction of atmospheric and topographic effects for high-spatial-resolution satellite imagery
Correction of atmospheric and topographic effects for high-spatial-resolution satellite imagery
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DOI：
10.1117/12.280598
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发表时间：
1997-08
期刊：
影响因子：
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通讯作者：
R. Richter
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文献类型：
--
作者：
R. Richter
本文提出了一种大气和地形影响联合改正的方法。它考虑了水平变化的大气条件，还包括大气辐射和透射率函数的高度依赖性，以模拟3D大气的简化属性。数字高程模型用于获取有关表面高程、坡度和方向的信息。基于朗伯假设，计算了起伏地形下的地表反射率。该方法仅限于高空间分辨率的卫星传感器，如Landsat TM和SPOT HRV，因为一些简化的假设，以减少所需的图像处理时间。该算法可应用于多光谱和全色图像。
A method for the combined correction of atmospheric and topographic effects has been developed. It accounts for horizontally varying atmospheric conditions and also includes the height dependence of the atmospheric radiance and transmittance functions to simulate the simplified properties of a 3D atmosphere. A digital elevation model is used to obtain information about surface elevation, slope, and orientation. Based on the Lambertian assumption the surface reflectance in rugged terrain is calculated. The method is restricted to high spatial resolution satellite sensors like Landsat TM and SPOT HRV, since some simplifying assumptions are being made to reduce the required image processing time. The algorithm can be applied to multispectral and panchromatic imagery.