opencv 轮廓处理与切割

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/farmwang/article/details/74322285

                                        <link rel="stylesheet" href="https://csdnimg.cn/release/phoenix/template/css/ck_htmledit_views-e2445db1a8.css">
                    <div class="htmledit_views">

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);

}
   
   

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/farmwang/article/details/74322285

                                        <link rel="stylesheet" href="https://csdnimg.cn/release/phoenix/template/css/ck_htmledit_views-e2445db1a8.css">
                    <div class="htmledit_views">

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);

}