I want to use in my app an custom filter. Now I know that I need to use Core Image framework, but i not sure that is right way. Core Image fram
OUTDATED
You can't create your own custom kernels/filters in iOS yet. See http://developer.apple.com/library/mac/#documentation/graphicsimaging/Conceptual/CoreImaging/ci_intro/ci_intro.html, specifically:
Although this document is included in the reference library, it has not been updated in detail for iOS 5.0. A forthcoming revision will detail the differences in Core Image on iOS. In particular, the key difference is that Core Image on iOS does not include the ability to create custom image filters.
(Bolding mine)