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I am not able to read the image and how can i retrieve the xml file and save it? Can someone help..

#include "opencv2/imgproc.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/imgproc/imgproc_c.h"
#include <iostream>

using namespace std;
using namespace cv;

int main() {

Mat img = imread("Outline.jpg"); //outline of foot


imshow("Test", img);

vector<vector<Point> > contours;

findContours(img, contours, RETR_EXTERNAL, CV_CHAIN_CODE);
cout << Mat(contours[0]) << endl;

findContours(img, contours, RETR_EXTERNAL, CHAIN_APPROX_SIMPLE);
cout << "CHAIN_APPROX_SIMPLE" << endl;
cout << Mat(contours[0]) << endl;

CvChain* chain = 0;
CvMemStorage* storage = 0;
storage = cvCreateMemStorage(0);
cvFindContours(&IplImage(img), storage, (CvSeq**)(&chain), sizeof(*chain), CV_RETR_TREE, 
CV_CHAIN_CODE);



for (; chain != NULL; chain = (CvChain*)chain->h_next)
{

    CvSeqReader reader;
    int i, total = chain->total;
    cvStartReadSeq((CvSeq*)chain, &reader, 0);
    cout<<"--------------------chain\n";

    for (i = 0; i<total; i++)
    {
        char code;
        CV_READ_SEQ_ELEM(code, reader);
        cout<<"%d"<<code;
    }
}



waitKey(0);

return 0;
    }