title: Explanation of IplImage* img
body: <p>I just started learning OpenCV with "Learning OpenCV Computer Vision with the OpenCV Library".  </p>
  
  <p>In the first example which demonstrates how to display a picture, it has a line </p>
  
  <pre><code>IplImage* img = cvLoadImage("name.type")
  </code></pre>
  
  <p>Although the book explains it, I still do not fully know what exactly <code>IplImage* img</code> does.</p>
  
  <p>Does cvLoadImage loads the image to img which IplImage is pointing to? Can anyone explain this to me please? Thank you</p>