Opencv加载和显示图片

#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 != )
    {
     cout <<" Usage: display_image ImageToLoadAndDisplay" << endl;
     return -;
    }

    Mat image;
    image = imread(argv[], 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 -;
    }

    namedWindow( "Display window", CV_WINDOW_AUTOSIZE );// Create a window for display.
    imshow( "Display window", image );                   // Show our image inside it.

    waitKey();                                          // Wait for a keystroke in the window
    return ;
}

参考地址：http://docs.opencv.org/doc/tutorials/introduction/display_image/display_image.html