遥感图象“空间”特征的机助处理

Computer-based Processing and Extracting of Spatial Characteristics of Remotely Sensed Data

以陕西北部黄土高原丘陵沟壑区为例，对几种常用的遥感图象（ＬＡＮＤＳＡＴＭＳＳ和ＴＭ，航空相片扫描图象）的空间特征进行了分析，并在处理和提取技术方面作了探讨。“纹理”图象对于反映地面切割状况、分析地表形态有特殊的意义。边界保留滤波技术对于处理地形破碎地区的图象非常有效．还结合水土流失综合治理动态监测讨论了其应用情况。在地形复杂地区图象处理和分类方面取得了可喜的进展，总结出了适合于地形复杂地区遥感图象处理与分类的方法和步骤。

in this paper, the method for processing and extracting of spatial features of remotely sensed images was introduced. The spatial characteristics of remotely sensed images of Northern Shaanxi province were analysed. Landsat images (TM and MSS), scaned aerial photographs and digital elevation data were discussed.' Texture Image' shows very meaningful for land form analysing. 'Edge preserve filter'is very useful for identifying of landtypes on the hilly area. Based on the results in the Loess Plateau the methods and procedures of image processing of the region with complex topography were developed.