注意在寻找轮廓时要选择中寻找外层轮廓

RETR_EXTERNAL #include "opencv/cv.h" #include "opencv/highgui.h" using namespace std; using namespace cv; int main() { Mat srcimg=imread("./22.jpg"); Mat dst; cvtColor(srcimg,dst,CV_BGR2GRAY); threshold(dst,dst,120,255,1); vector<vector<Point> > edgepoint; vector<Vec4i> lclass; findContours(dst,edgepoint,lclass,RETR_EXTERNAL,CHAIN_APPROX_NONE,Point()); Mat mat[edgepoint.size()]; for(int i=0;i<edgepoint.size();i++) { Rect rec=boundingRect(Mat(edgepoint[i])); mat[i]=dst(rec); rectangle(dst,rec,Scalar(100,80,90),1,1,0); drawContours(dst,edgepoint,i,Scalar(200),1,8,lclass); string str=to_string(i); imshow(str,mat[i]); } imshow("tt",dst); cout<<edgepoint.size()<<endl; waitKey(0); }

结果如下：

总结

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