UK cops' porn-spotting software can't tell the difference between sand and skin

I can understand the problem. Long ago I wrote a program to detect near-duplicate images. Of course it required a human eyeball to verify but it was very good at what it did–unless confronted with a beach scene. I never did figure out how to fix the algorithm.

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There was a rumour back in the day that miscreants were distributing illegal porn as negative images, to avoid triggering filters based on skin colour…

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Well, you can almost understand the Grace Kelly. Man she was hot.

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You DO know black, yellow, and more rarely “prismatic” sand exists, correct?

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Sandy Vagina!! I’ve got all their albums!

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Though it isn’t covered by this story, I think there’s some decent chance it doesn’t recognize black skin at all.

Not even on beige sand?

I mean just at all. If it can’t tell white skin from sand then it’s apparently looking at a colour palette and saying that things in a certain colour range are skin. There’s a decent chance that colour palette is just for white people.

I’m not saying it wouldn’t be able to tell sand from a black person. I’m saying I think there’s a pretty good chance that if you gave it an image of a black person at the beach it would think the sand was skin and the black person wasn’t.

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I see. Thanks for the clarification.

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