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i’m searching about image filters using ios5 sdk but i have two questions:
For Mac Os X seems to be a lot of filters that are not available in IOS SDK. Is it possible to implement them or have they already been implemented?
Is there an open-source library with filters like Instragram uses?
Thanks!
You can create your own custom CoreImage filters by implementing your own kernel. The kernel will be applied using CoreImage’s hardware acceleration, see: Creating Custom Filters
There are a number of open-source image libraries. We use ImageMagick in some of our iOS apps. A iOS library is even available for download.