下面是一个简单的程序，用于显示图像的宽度，高度，大小等属性。
此程序假定我们在系统上安装了OpenCV库。

#include <iostream>
#include <iomanip>
#include "cv.h"
#include "highgui.h"
using namespace std;
int main( int argc, char** argv )
{
//Create an IplImage object *image 
IplImage *image = cvLoadImage( argv[1]);
//Display Image Attributes by accessing a IplImage object's data members
cout << left << setfill(' ') <<  setw(15) << "Image filename:" << argv[1] << endl;
cout << setw(15) << "Width:" <<  image->width << endl;
cout << setw(15) << "Height:" <<  image->height << endl;
cout << setw(15) << "Pixel Depth:" <<  image->depth << endl;
cout << setw(15) << "Channels:" <<  image->nChannels << endl;
cout << setw(15) << "Width Step:" <<  image->widthStep << endl;
cout << setw(15) << "Image Size:" <<  image->imageSize << endl;
return 0;
}

编译：

g++ `pkg-config opencv --cflags --libs` imageattr.cpp -o imageattr

输出示例：

./imageattr test.jpg 
Image filename:test.jpg 
Width: 1148 
Height: 644 
Pixel Depth: 8 
Channels: 3 
Width Step: 3444 
Image Size: 2217936