A couple of years ago when Core Image and face detection were added with iOS 5 and I posted a simple tutorial on how to use face detection.
Here’s a neat little example utilizing core image face detection from Dan Hassin called FaceImageView.
What FaceImageView does is allow you to set up a view that automatically scales an image within the defined bounds keeping detected faces within view by default centering the view on the faces.
You can find FaceImageView on Github here.
A neat little library that could be handy if you’re working on an app that involves photo taking.
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