In this chapter, we learned the basic methods of applying effects to still and moving images. It is possible to do a lot more by studying the raw image processing algorithms and applying them as per-pixel operations. So if you do that and you are able to reproduce most of the image effects that one can find in Photoshop or Gimp—congratulations! You may also want to bring your knowledge to the next level by learning something about shaders and OpenGL Shading Language.