title: Convert .mat annotation file into XML file
body: <p>I have some images, which I annotated using MATLAB's <code>imageLabler</code> tool. As a result I got gtruth.mat file (which contains annotations of all of the images). </p>
  
  <p>Now I would like to train a simple object detector using these annotations. However, the object detector that I am using (dlib object detector), only accepts XML format.</p>
  
  <p>Is it possible to convert that <code>.mat</code> file into an XML file, so that my all annotations remain intact and I can train my custom object detector? If so, how can I do that?</p>