Corruption of heap - VS2010

Question

I have a C++ program that crashes when I run it. I get the following error:

This may be due to a corruption of the heap, which indicates a bug in test1.exe or any of the DLLs it has loaded.

The program is used to identify the hand through the camera feed and detect the contours of the hand.

Code:

This is the function where the crash occurs:

void showimgcontours(Mat &threshedimg,Mat &original)
{
  vector<vector<Point> > contours;
  vector<Vec4i> hierarchy;
  int largest_area = 0;
  int largest_contour_index = 0;
  **findContours(threshedimg, contours, hierarchy, CV_RETR_TREE, CV_CHAIN_APPROX_SIMPLE);** //this will find largest contour
  for (int i = 0; i< contours.size(); i++) // iterate through each contour. 
  {
    double a = contourArea(contours[i], false);  //  Find the area of contour
    if (a>largest_area)
    {
        largest_area = a;
        largest_contour_index = i;                //Store the index of largest contour
    }

  }
//search for largest contour has end

  if (contours.size() > 0)
  {
      //drawContours(original, contours,largest_contour_index, CV_RGB(0, 255, 0), 2, 8, hierarchy);
      //if want to show all contours use below one
      drawContours(original,contours,-1, CV_RGB(0, 255, 0), 2, 8, hierarchy);
  }
}

The bold line(findContours) is where the program breaks.

This is where the function is called:

    while ((key = waitKey(30)) != 27)
    {
      toggle(key);
      cap >> frame;
      flip(frame, frame, 180);
      cvtColor(frame, hsvframe, COLOR_BGR2HSV);

      inRange(hsvframe, Scalar(H_MIN, S_MIN, V_MIN), Scalar(H_MAX, S_MAX, V_MAX), rangeframe);

      if (domorph)
          morphit(rangeframe);

      if (doblurthresh)
          blurthresh(rangeframe);

      if (showcontours)
          showimgcontours(rangeframe, frame);

      if (showchangedframe)
          imshow("Camera", frame);
      else
          imshow("Camera", rangeframe);

  }
}

This function is called when the user presses the key 'c'. I googled for solutions but didn't find anything that helped. Someone please help me!

Where do you populate `contours`? If `findContours` is what brakes don't you think its code would be important? — NathanOliver, May 10 '16 at 12:44
Corruption happens before the memory manager notices it, and it could have happened a long time ago. — molbdnilo, May 10 '16 at 12:53
The frame variable is not allocated, please show us more code. — FedeWar, May 10 '16 at 12:56
@NathanOliver findContours is where contours is populated. It's an inbuilt function in opencv.. — NeonBlue, May 10 '16 at 12:57
@FedeWar the frame variable is used to read frames from the camera feed — NeonBlue, May 10 '16 at 12:58
http://stackoverflow.com/questions/16523169/opencv-findcontours-2-4-5-heap-corruption — FedeWar, May 10 '16 at 12:58
you used debug libraries in release, or viceversa. Or you're using OpenCV build with a different compiler then what you're using. Fix your settings and it will work — Miki, May 10 '16 at 14:22

Corruption of heap - VS2010

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