MATLAB图像处理中查找连通域边界的函数是什么

bwboundaries
不会吧，这个函数都没有么？默认应该都有图像处理工具箱啊，除非你安装时没有装这个工具箱，下面是我从帮助中复制的
Image Processing Toolbox bwareaopen bwdist
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bwboundaries
Trace region boundaries in binary image
Syntax
B = bwboundaries(BW)
B = bwboundaries(BW,conn)
B = bwboundaries(BW,conn,options)
[B,L] = bwboundaries()
[B,L,N,A] = bwboundaries()
Description
B = bwboundaries(BW) traces the exterior boundaries of objects, as well as boundaries of holes inside these objects, in the binary image BW bwboundaries also descends into the outermost objects (parents) and traces their children (objects completely enclosed by the parents) BW must be a binary image where nonzero pixels belong to an object and 0 pixels constitute the background The following figure illustrates these components

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