基于数学形态学的遥感影像水域提取

利用数学形态学的方法对遥感影像上的水渠进行了提取试验。经试验结果得出，利用数学形态学的基本运算组合成的各种算子高低帽变换滤波与阈值截取相结合的增强方法，选择合适的结构元素，对图像进行预处理后进行分割，可以完成遥感影像上灰度变化较小水体的提取，其结果优于直接对原图进行分割。矢量跟踪后，得出的结果可以直接应用到GIS中去。

The Water Area Extraction from the Remote Sensing Image Based on the Method of Mathematics Morphology

This article describes the method of using Mathematics Morpholgic Subject to extract the canal of the area objects in the remote sensing image.As the experiment has showed,by using the sorts of operators combined by the basic operation of Mathematics Morphologic Subject and the top-bottom hat transform and the subtract operators,choosing the right structuring element,the image segmentation after pre-processing operations,the subject water which gray change smally can be extracted from the remote sensing image.The result is better than the direct image segmentation.Then the vector tracking is made.The result of the method can be directly used in the application of GIS.