int n=4;
   int TOTAL_POINTS=n;
Point pt;
vector<Point> capturePoint = vector<Point>();

void CallBackFunc(int event, int x, int y, int flags, void* param)
{
    //Mat& image= *(Mat*) param;

    if (event == CV_EVENT_LBUTTONDOWN){
        pt.x = x;
        pt.y = y;
        cout << "Point" << TOTAL_POINTS + 1 - n << "(" << x << "," << y << ")" << endl;
        capturePoint.push_back(pt);
        n--;
        //circle(mouseDetector::workingMat,pt,2,Scalar(0,0,255), 5);
        if(n==0){
           cvDestroyAllWindows();
        }
    }
}