How do I perform a fast pixellation filter on an image?

Question

I have a little problem with my pixellation image processing algorithm.

I load the image from the beginning into an array of type unsigned char* After t

Answer 1

The iPhone is not a great device to be doing computationally–intensive tasks like image manipulation. If you're looking to improve the performance in displaying very high resolution images—possibly while performing some image processing tasks at the same time, look into using CATiledLayer. It's made to display the contents in tiled chunks so you can display/process content data only as needed on individual tiles.