title: How to process large images?
body: <p>I need to process(export subsections) of a large image(33600x19200) and I'm not sure how to start.</p>
  
  <p>I've tried simply allocating an image using <a href="http://openframeworks.cc" rel="nofollow">openframeworks</a> but I got this error:</p>
  
  <pre><code>terminate called after throwing an instance of 'std::bad_alloc'
    what():  std::bad_alloc
  </code></pre>
  
  <p>I'm not experienced with with processing images this large. Where should I start ?</p>