http://www.imagemagick.org/download/iOS/
http://www.google.com/codesearch#I0cABDTB4TA/pub/FreeBSD/ports/distfiles/ImageMagick-6.3.2-0.tar.bz2%7Cqy9T8VaIuJE/ImageMagick-6.3.2/magick/effect.c
http://www.imagemagick.org/script/binary-releases.php?ImageMagick=6v1763klfqgboqosn68v8qa7k3#iOS
http://www.imagemagick.org/script/license.php
http://homepages.inf.ed.ac.uk/rbf/HIPR2/hipr_top.htm
http://stackoverflow.com/questions/3928862/instagram-image-filters-on-iphone
http://en.wikipedia.org/wiki/Canny_edge_detection
http://www.multunus.com/2011/10/simple-image-filter-using-opengl-es-in-android/
A Library of OpenGL-based Mathematical Image Filters
http://martin.von-gagern.net/publications/2010-icms/
OpenGL ES Tutorial for Android – Part V – More on Meshes
http://blog.jayway.com/2010/02/15/opengl-es-tutorial-for-android-%E2%80%93-part-v/
http://slick.cokeandcode.com/javadoc/org/newdawn/slick/Image.html