FaceImageView automatically scales its image to fill the bounds and keep any faces detected in view. This can be useful if you want to display people-based dynamic content with UIViewContentModeScaleToFill but are having issues with it displaying the wrong part of the image, like the background, or someone's feet.
The class uses the CoreImage face detection APIs available in iOS 5.0 or later. This API works in many clear cases, but is not all that reliable. If no faces are detected in an image, FaceImageView defaults to centering the image, like UIImageView's behavior with UIViewContentModeScaleToFill.