opencv图片加载与显示

#include "iostream"
#include "cv.h"
#include "highgui.h"

using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
    IplImage* pImg;        //声明IplImage指针
    //载入图像
    if( ( pImg = cvLoadImage( "a.jpg", 1)) != 0)
    {
        cvNamedWindow( "Image", 1 );                //创建窗口
        cvShowImage( "Image", pImg);        //显示图像
        cvWaitKey(0);                        //等待按键
        cvDestroyWindow( "Image" );            //销毁窗口
        cvReleaseImage( &pImg );                    //释放图像
        return 0;
    }
    return -1;
    system("pause");
}