This project is an example of using OpenCV on the iPhone.
It provides a simple application that let you take a picture (or select one from your photo library), and that detects the face(s) on the picture.
The application does not compile (yet) for the iPhone simulator. You need to build it for your iOS device in order to test it.
FaceDetect uses the OpenCV port provided by eosgarden (myself), and which is also available on GitHub.
FaceDetect is released under the terms of the Boost Software License - Version 1.0.