objective c - Instagram Image Filters on iPhone

Question

How does one go about adding image filters in an iPhone application? (similar to what Instagram and picplz have)

Answer 1

Folks,

I have made an attempt at replicating instagram and photoshop filters using pure CoreGraphics and direct pixel manipulation, not using OpenGL.

Find this project at:

https://github.com/esilverberg/ios-image-filters

** UPDATE **

You also should consider this project: https://github.com/gobackspaces/DLCImagePickerController