基于TM影像进行河流提取中分割尺度因子的选择--以鸭绿江为例

摘要

TM image was segmented by eCognintion software in different scale factors and got different results, and the river part of segmented results were compared with the river shape from visual interpretation. The segmentation scale factor is the best one when the result can be suitable to the widest and the narrowest of the river channel.%本文利用eCognintion软件对TM遥感影像进行了分割，通过设置不同的分割尺度因子获得对应的影像分割结果，将分割结果中的河流部分与目视解译的河流形状进行比对。在河流最宽处和最窄处的分割结果都达到最优的情况下，此时的分割尺度因子即为适宜该河段的因子。