Question

• Im using Opencv 2.3.1 on Visual studio 2010 (vc10)
• I have configured opencv based on many tutorials and can compile & run C-syntax program like:

#include "StdAfx.h"
#include <iostream>
#include <opencv2/opencv.hpp>

using namespace std;
using namespace cv;

int main ()
{
    IplImage* img = cvLoadImage("D:\cat_helmet.jpg", CV_LOAD_IMAGE_UNCHANGED);
    cvNamedWindow("display", CV_WINDOW_AUTOSIZE);
    cvShowImage("display", img );
    cvWaitKey(0);        

    return 0;
}

However, I cannot run the C++ syntax program like

#include "StdAfx.h"
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <iostream>

using namespace cv;
using namespace std; 

int main(  )
{ 
    namedWindow( "Display window", CV_WINDOW_AUTOSIZE );
    Mat image;
    image = imread("D:\cat_helmet", CV_LOAD_IMAGE_COLOR);   

    if(! image.data )                             
    {
        cout <<  "Could not open or find the image" << std::endl ;
        return -1;
    }
    imshow( "Display window", image );                   

    waitKey(0);                                          
    return 0;
}

I got the error messages (in the function calls: namedWindow, imread, imshow)


First-chance exception at 0x5361fcc3 in FirstOpencv2.3.exe: 0xC0000005: Access violation reading location 0x2079616c.



Unhandled exception at 0x5361fcc3 in FirstOpencv2.3.exe: 0xC0000005: Access violation reading location 0x2079616c.


How can I fix this?

Answer 1

You say that you have followed a multitude of guides and tutorials. I’ve had great success with this one
http://www.anlak.com/using-opencv-2-3-1-with-visual-studio-2010-tutorial/

The thing is that this guy walks you through the ‘park’ and helps you unravel two major issues whilst setting up OpenCV 2.3.1; one of which is placement of .dll files in your project folder. The other is a missing .dll ‘tbb_debug.dll’ (the absense of this .dll is considered a bug in OpenCV 2.3.1).

He also provides some decent code-snippets for your to try out (in c++ syntax).

Good luck.