How does one go about adding image filters in an iPhone application? (similar to what Instagram and picplz have)
A:
Sadly there is no CoreImage library in the iOS SDK so you have to use OpenGLES to do image processing, Apple have an example application that demonstrates several techniques.
http://developer.apple.com/library/ios/#samplecode/GLImageProcessing/Introduction/Intro.html
Ben
2010-10-14 02:04:23