How to block uploads of nude images? [closed]

Answer 1

This works more or less, with a few complications to think about.

• Don't automatically delete images if a picture get flagged

The script does not detect nudity itself, but colors that are likely to be in a pornographic picture.

I would send flagged pictures that the script detects as "pornographic" in a moderation queue and then choose what to do or not to do. Simple as that. Keep in mind that pictures of babies and similar definitely will get flagged from time to time.

https://github.com/FreebieStock/PHP-Image-Pornographic-Content-Detection

Answer 2

All current methods involve the skin color detection. this is never accurate and not even close to advanced.

If at all something advanced exist, that could be used to stop child pornography.

Answer 3

I agree with Pekka's comments about automation. That's a rather difficult problem that is not quite solved yet.

Have you thought about http://crowdsifter.com/ or doloreslabs? They can crowdsource a moderated queue for you, or check your existing images on the cheap. If its a business website that might be the trick.

Note: I am not affiliated with dolores labs.

Answer 4

One of the best app for this request is:

http://www.9lessons.info/2014/01/block-uploads-of-adult-or-nude-images.html