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#include <opencv2/core/core.hpp>   
#include <opencv2/highgui/highgui.hpp>  
#include <iostream>
 
using namespace cv;
using namespace std;
 
int main(int argc, char** argv)
{
	if (argc != 2)
	{
		cout << " Usage: display_image ImageToLoadAndDisplay" << endl;
		return -1;
	}
 
	Mat image;
	image = imread("D:\photo\sab.jpg", CV_LOAD_IMAGE_COLOR);   // Read the file
 
	if (!image.data)                              // Check for invalid input
	{
		cout << "Could not open or find the image" << std::endl;
		return -1;
	}
 
	namedWindow("Display window", CV_WINDOW_AUTOSIZE);// Create a window for display.
	imshow("Display window", image);                   // Show our image inside it.
 
	waitKey(0);                                          // Wait for a keystroke in the window
	return 0;
}