title: Find an image in an image C#
body: <p>I have a scan of a document (a form actually) filled with some handwritten infos.</p>
  
  <p>I have a bitmap of the form empty.</p>
  
  <p>how can i "cancel" the printed form to extract the handwritting only.</p>
  
  <p>I use C#...
  Thanks
  Jonathan</p>