Image Editing Issue
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I am working on an app with have requirement to give "Droste Effects" on image.i did search on Google more but not find programming solution for this effects.the effect example in there below.

http://apping.me/ios/4eb514ba8491783f5b0001e2/droste+vision.html


http://www.pmavridis.com/iDroste/iDroste.html

Please provide me suggestion or any tutorials link. How i will do that task?.Thanks in advance.
   