title: iOS 7 Apply filters on UIImagePickerViewController
body: <p>Hi i try to build simple camera app with filters. I apply CIFilters on UIImage that works fine but now i want apply filters before take photo(live filter on camera) like iOS7 camera below.</p>
  
  <p><img src="https://i.stack.imgur.com/5mBgS.png" alt="enter image description here"></p>
  
  <p>Thank in advance.</p>