subplot132imshowI1title二值化图像
faxis5025050200grido
显示网格线axiso
显示坐标系I2bwperimI1获取区域的周长subplot133imshowI2title边界周长的二值图像axis5025050200grido
axiso
20形态学骨架提取形态学骨架提取利用MATLAB实现如下：Iimreadxia
bmpsubplot221imshowItitle原始图像axis5025050200axiso
I1im2bwIsubplot222imshowI1title二值图像axis5025050200axiso
I2bwmorphI1skel1subplot223imshowI2title1次骨架提取axis5025050200axiso
I3bwmorphI1skel2subplot224imshowI3title2次骨架提取axis5025050200axiso
21直接提取四个顶点坐标直接提取四个顶点坐标Iimreadxia
bmpII1BWim2bwIfigureimshowBWxygetpts
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