title: How to tell if an image contains a "handwritten signature"?
body: <p>I have a form (with a line drawn at the bottom right for signing the form) that is scanned into a TIF format (black/white).</p>
  
  <p>Some people filling out the form may sign on it and some don't. So how can I tell if the scanned image contains a signature on it? Any algorithm suggested or any existing framework or libraries that can achieve this?</p>
  
  <p>Thanks!</p>