1 //! [includes] 2 #include <opencv2/core/core.hpp> 3 #include <opencv2/imgcodecs.hpp> 4 #include <opencv2/highgui/highgui.hpp> 5 6 #include <iostream> 7 #include <string> 8 //! [includes] 9 10 //! [namespace] 11 using namespace cv; 12 //! [namespace] 13 14 using namespace std; 15 main(int argc,char ** argv)16int main( int argc, char** argv ) 17 { 18 //! [load] 19 string imageName("../data/HappyFish.jpg"); // by default 20 if( argc > 1) 21 { 22 imageName = argv[1]; 23 } 24 //! [load] 25 26 //! [mat] 27 Mat image; 28 //! [mat] 29 30 //! [imread] 31 image = imread(imageName.c_str(), IMREAD_COLOR); // Read the file 32 //! [imread] 33 34 if( image.empty() ) // Check for invalid input 35 { 36 cout << "Could not open or find the image" << std::endl ; 37 return -1; 38 } 39 40 //! [window] 41 namedWindow( "Display window", WINDOW_AUTOSIZE ); // Create a window for display. 42 //! [window] 43 44 //! [imshow] 45 imshow( "Display window", image ); // Show our image inside it. 46 //! [imshow] 47 48 //! [wait] 49 waitKey(0); // Wait for a keystroke in the window 50 //! [wait] 51 return 0; 52 } 53
