Question

I am using OpenCV 2.3.1 with Windows 8. When I call function cvShowImage the program crashes. I am using codeblocks and I don’t know why this happens.

If I comment the line the program runs well.

The code looks as follows:

    IplImage *img1=NULL;
    img1=cvLoadImage("LenaComFormas.pgm",CV_LOAD_IMAGE_GRAYSCALE);
    cvShowImage("Original", img1);
    cvWaitKey(0);

Answer 1

your code is working fine with Qt and opencv 2.4.3 on Windows7…possible checks you can do…

1. check links to the libraries…opencv_core231 , opencv_highgui231 , opencv_imgproc231…check includes to opencv2/opencv/core.hpp opencv2/opencv/highgui.hpp.
2. check the IplImage pointer img1

IplImage *img1 = cvLoadImage("",0);

if(img1==NULL)

return -1;

3 . check the support of *.pgm images…or else get the latest opencv and try…

EDIT..
4 . just for check try the following..

#include <opencv/opencv2/core.hpp>
#include <opencv/opencv2/highgui.hpp>

using namespace cv;

int main()
{
  Mat image;
  image = imread("",0);
  imshow("TEST",image);
  waitKey(0);
  return 0;
}