本Blob分析基本适合所有视觉的项目，就几行代码，分为几个步骤
1、读取图片 ReadImage
2、3通道转1通道Rgb1ToGray
3、阈值提取区域Threshold
4、连通区域Connection
5、分别以圆周率circularity、凸状率convexity、惯性inertia、面积area来挑选出区域
ReadImage(srcImage,\'blob.bmp\')
Rgb1ToGray(srcImage,ImageNew)
Threshold(ImageNew,hoThres,0,50)
Connection(hoThres,hoConn)
SelectShape(hoConn,hoSelect1,\'circularity\',\'and\',0.9,1)
SelectShape(hoSelect1,hoSelect2,\'convexity\',\'and\',0.9,1)
SelectShape(hoSelect2,hoSelect3,\'inertia\',\'and\',0.9,1)
SelectShape(hoSelect3,hoSelect4,\'area\',\'and\',2500,100000)