direct supervision they're out but we just don't have enough of these positive examples and so what we're going to do is we're trying to think about this as a normally detection so we're going to find to see if we can learn if an image is consistent with itself okay and the idea here is the following we can look at a couple of patches of this image and we see is there some sort of some kind of fingerprint in these in this patches that tells us that they might have come from different imaging systems that they