I have the impression (though I haven't found a clear statement in the documentation) that using the face or faces gravity on an image without a face falls back to the north gravity. Is that correct? Is there a way I can influence that fallback? Our use case is that we want to display user-uploaded profile images that mostly display persons, but we can't be sure of that. In case there is no face, we'd like a fall back to the center gravity, since that is much more natural than displaying the top part of the image.
Thanks and cheers,
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