Opencv2.3.1讀取圖片並顯示

//#include “StdAfx.h”

#include <string>

#include <iostream>

#include <opencv2\core\core.hpp>

#include <opencv2\highgui\highgui.hpp>

 using namespace cv;

using namespace std;

 int main()

{

 //string imageName = "lena.jpg";
 string imageName ="C:\\Users\\Administrator\\Desktop\\Lena.jpg";

 //讀入映像

 Mat img = imread(imageName, CV_LOAD_IMAGE_COLOR);

  //如果讀入映像失敗

 if (img.empty())

 {

  cout<<"Could not open or find the image!"<<endl;

  return -1;

 }

  //建立視窗

 namedWindow("lena", CV_WINDOW_AUTOSIZE);

 //顯示映像

 imshow("lena" ,img);

  //等待按鍵，按鍵盤任意鍵返回

waitKey(-1);

 return 0;

}