Question

I am currently developing an iPhone app that makes use of a UIImagePickerController with a custom overlay to take photos.

Unfortunately I do not have direct access to an iPhone 4S but several testers have reported that the camera picker is drawing a green border around faces exactly like this: http://cdn.iphonehacks.com/wp-content/uploads/2012/03/camera_faces.jpg

Due to the nature of this app this is not desirable.

A thorough search of the UIImagePickerController docs didn’t turn up anything and similarly everything I could find on here relating to face detection was providing instructions in how to use a CIDetector or similar.

How can I disable face detection in my UIImagePickerController?

Here is my initialisation code for the UIImagePickerController:

UIImagePickerController *cameraPicker = [[UIImagePickerController alloc] init];

[cameraPicker setSourceType:UIImagePickerControllerSourceTypeCamera];
[cameraPicker setCameraDevice:UIImagePickerControllerCameraDeviceRear];
if ([UIImagePickerController isFlashAvailableForCameraDevice:cameraPicker.cameraDevice]){
    [cameraPicker setCameraFlashMode:UIImagePickerControllerCameraFlashModeOn];
}
[cameraPicker setShowsCameraControls:NO];
[cameraPicker setCameraOverlayView:cameraOverlayView];

cameraPicker.delegate = self;
[self presentModalViewController:cameraPicker animated:YES];

Answer 1

Check out this post. There are some hints here, but still can’t find much info outside of Apple’s docs on this API.
Proper usage of CIDetectorTracking