An edge detecting method for digital image is proposed using direction information of the gradient to thin off the differential image and defining a measuring function to link the edge points.
本文提出了一种利用梯度的方向信息，对微分图象进行细化，并确定一测量函数进行边缘点连接，以实现图象边缘检测的方法。
The edge gradient and direction information are obtained by edge detection of remote sensing.
首先对遥感图像进行边缘检测以获取图像中每个像素的边缘梯度和方向信息；
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