title: fast finding of small image in a bigger image
body: <p>I need to get the coordinates of a small image location residing in a big image (let say I need to search for a specific tree inside a forest photograph. If the sub-image is found then the result would be something like: <code>x=120</code> <code>y=354</code> by example).</p>
  
  <p>Is there a fast algorithm that I could use ?</p>
  
  <p>I'm using Delphi (can also use Java if needed)</p>