title: iOS Image Manipulation (Distortion)
body: <p>I initially approached this issue with CoreImage in mind (because I also need to do facial recognition), but realized that, unfortunately, the CI Distortion filters are not yet included on the iPhone.</p>
  
  <p>I attempted to dive into GLImageProcessing, CImg, and ImageMagick, though I've had a lot of trouble finding a starting point for learning any of these.</p>
  
  <p>Given the number of apps out there that do image distortion, I know this can't be incredibly difficult.</p>
  
  <p>I don't know C or C++, and don't have the time to learn those languages unless absolutely necessary. It would become necessary if one of those libraries is the definitive library for handling this task.</p>
  
  <p>Does anyone have experience with any of these libraries?</p>
  
  <p>Any books out there that cover this for iOS5 specifically?</p>
  
  <p>Resources I've found:</p>
  
  <ul>
  <li><p>GLImageProcessing sample project
  <a href="https://developer.apple.com/library/ios/#samplecode/GLImageProcessing/Introduction/Intro.html" rel="noreferrer">https://developer.apple.com/library/ios/#samplecode/GLImageProcessing/Introduction/Intro.html</a></p></li>
  <li><p>ImageMagick &amp; MagickWand
  <a href="http://www.imagemagick.org/script/magick-wand.php" rel="noreferrer">http://www.imagemagick.org/script/magick-wand.php</a></p></li>
  <li><p>CImg
  <a href="http://cimg.sourceforge.net/" rel="noreferrer">http://cimg.sourceforge.net/</a></p></li>
  <li><p>Simple iPhone image processing
  <a href="http://code.google.com/p/simple-iphone-image-processing/" rel="noreferrer">http://code.google.com/p/simple-iphone-image-processing/</a></p></li>
  </ul>