A New Edge Detection Method of Remote Sensing Image
一种新的遥感影像边缘检测方法

A new edge detection algorithm of remote sensing image is proposed. First, smoothing the image by different masks, we can construct the object-clouds based on gray-level of images by region growth algorithm. Second, constructing boundary-clouds and fuzzy property facet by Boolean calculation between two or more clouds. Third, getting the optimal threshold through maximizing the entropy of fuzzy partition based on conditional probabilities and entropy of fuzzy partition. At last, we can get the edge of aerial image by fuzzy property facet and optimal threshold. We conduct various performance to show that plenty of low-level gray can be preserved and the disturb of small edges to main edge is suppressed.