How to block uploads of nude images? [closed]

Question

I need a provision of detecting the adult image in the websites where the user uploads the pictures to determine that a picture isn’t acceptable for my site. Can any one suggest the method to do this?

I need kind of open source code/program (PHP) that could be implemented in the website and stops the user to upload the picture. Earlier to the my idea there is a class image filter http://www.phpclasses.org/browse/package/3269.html But I want code which is similar to this or maybe even more advanced.

Answer 1

Sorry mate, I think the bottom line here is you aren't going to get around manual checking. There are approaches, but none really reliable and with a lot of false positives.

Check out this question: What is the best way to programatically detect porn images? for inspiration.

If you ask me though, it's a waste of time to look for an automated solution. Given half an hour's time, I can find you twenty images that would trigger a "nude" alarm even though perfectly innocent, and the same the other way around. Also, nudity is not going to be the only thing you do not want on your site.

Better spend the time on a system that makes it really easy to manually verify the content users upload to your site, e.g. as a Desktop widget, on the mobile phone, or whatever suits you best.