I want to load an image using Mat in openCV
My code is:
Mat I = imread("C:/images/apple.jpg", 0);
namedWindow( "Display window", CV_WINDOW_AUTOSIZE );// Create a window for display.
imshow( "Display window", I );
I am getting the following error in a message box:
Unhandled exception at 0x70270149 in matching.exe: 0xC0000005: Access violation
reading location 0xcccccccc.
Please note that I am including:
#include <cv.h>
#include <cxcore.h>
#include <highgui.h>
#include <iostream>
#include <math.h>
I've talked about this so many times before, I guess it's pointless to do it again, but code defensively: if a method/function call can fail, make sure you know when it happens:
Mat I = imread("C:\\images\\apple.jpg", 0);
if (I.empty())
{
std::cout << "!!! Failed imread(): image not found" << std::endl;
// don't let the execution continue, else imshow() will crash.
}
namedWindow( "Display window", CV_WINDOW_AUTOSIZE );// Create a window for display.
imshow( "Display window", I );
waitKey(0);
Note that Windows' path uses backslash \
instead of the standard /
used on *nix systems. You need to escape the backslash when passing the filename: C:\\images\\apple.jpg
Calling waitKey()
is mandatory if you use imshow()
.
EDIT:
If it's cv::imread()
that is throwing the exception the only solution I know to work is downloading OpenCV sources and building it on the machine, since re-installing OpenCV doesn't fix the issue.