同时，在模糊C-均值聚类基础上选择训练样本比起直接基于真实地物图选择，减少了主观因素对训练样本选择的影响，因此取得了更高的分类精度。
Selecting train sample on the basis of fuzzy C-mean clustering decreased subjective factor affecting selecting train sample, so higher classification accuracy can be achieved.
该文讨论了一种在GIS支持下利用直射辐射遥感图象研究地物双向反射特性的原理和方法。
This paper describes the principles and methodology to express bidirectional reflection (BDR) properties of ground targets by using direct radiative remotely sensed image under the support of GIS.
地形图数字化误差造成地物几何形变，采用测量平差的理论方法可以减弱形变。
The digitalization errors of topographic map result in geometry change for the objects on the earth. We can reduce geometry change by means of measuring adjustment.
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