获取IplImage 数据并打印

int main(int argc, char* argv[])
{

    IplImage *img=cvLoadImage("c://fruitfs.bmp",1);
    CvScalar s;
    for(int i=0;i<img->height;i++){
        for(int j=0;j<img->width;j++){
        s=cvGet2D(img,i,j); // get the (i,j) pixel value
        printf("B=%f, G=%f, R=%f ",s.val[0],s.val[1],s.val[2]);
        s.val[0]=111;
        s.val[1]=111;
        s.val[2]=111;
        cvSet2D(img,i,j,s);//set the (i,j) pixel value
        }
    }
    cvNamedWindow("Image",1);

    cvShowImage("Image",img);
    cvWaitKey(0); //等待按键

    cvDestroyWindow( "Image" );//销毁窗口
    cvReleaseImage( &img ); //释放图像

    return 0;
}