CIDetector and UIImagePickerController

Question

I\'m trying to implement the built-in iOS 5 face detection API. I\'m using an instance of UIImagePickerController to allow the user to take a photo and then I\'

Answer 1

Sure enough, after spending a day looking into this and being stumped, I've found a solution an hour after posting this.

I eventually noticed that the face detection did work in landscape, but not in portrait.

Turns out I needed these options:

NSDictionary *imageOptions = [NSDictionary dictionaryWithObject:[NSNumber numberWithInt:6]
                                                         forKey:CIDetectorImageOrientation];
NSArray *features = [detector featuresInImage:ciimage options:imageOptions];