#include "opencv2/opencv.hpp"
#include <opencv2/highgui.hpp>
using namespace cv;
using namespace std;

int main()
{
    cv::Mat src = imread("IMG_0029.JPG", CV_LOAD_IMAGE_COLOR);
    if(!src.data)  //or == if(src.empty())
    {
        cout<<"Could not open or find the image"<< endl;
        return -1;
    }
    cv::namedWindow("Display", 0);                     // 0：表示可压缩 
    cv::resizeWindow("Display", cv::Size(640, 480));
    cv::imshow("Display", src);
    cv::waitKey(0 );

    return 0;
}