02 顯示圖片

#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(argv[1], 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", 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;

02 顯示圖片