If you are interested in a similar approach by a Facebook developer: <a href="http:&#x2F;&#x2F;blog.vjeux.com&#x2F;2012&#x2F;image&#x2F;best-cropping-position.html" rel="nofollow">http:&#x2F;&#x2F;blog.vjeux.com&#x2F;2012&#x2F;image&#x2F;best-cropping-position.html</a>