Edge is a basic character of images. Edge detection is base of image processing, and play an important part in image identify, cut, contract and so on. Now many kinds of edge detection method appear.

边缘是图像的基本特征，边缘检测是图像处理的基础，并在图像识别、图像剪切、图像压缩等领域起着重要作用。

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Edge is a basic character of images. Edge detection is base of image processing, and play an important part in image identify, cut, contract and so on. Now many kinds of edge detection method appear.

边缘是图像的基本特征，边缘检测是图像处理的基础，并在图像识别、图像剪切、图像压缩等领域起着重要作用。

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