Edge extraction: the basic idea of edge detection is to use edge enhancement operator to highlight the local edge of image, and then define the edge intensity of pixels, and set the threshold method to extract the edge point set. Due to the presence of noise and blurring, the monitored boundaries may be widened or discontinuous at some point. Therefore, the boundary detection includes two basic contents: (1) edge operators are used to extract the set of edge points that reflect the change of gray level. (2) eliminate some boundary points in the set of edge points or fill the breakpoints between the boundaries, and connect these edges into a complete line.

Filename	Size	Update
BianYuanTiQu3.m	774	2017-09-27
BianYuanTiQu1.m	720	2017-09-27
BianYuanTiQu2.m	1064	2017-09-27

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