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A comment on Inside Pornhub. Parent comment

Re:Inside Pornhub by shakna on Wednesday February 23, 2022 @11:00AM (#30442475)
You're probably thinking of a perceptual hash. [0] It's a relatively new field, academically speaking, so only a few players dominate, and there is a huge amount of research going into it.

There are other techniques for automatic flagging of similar files, like PhotoDNA's [1] enormous database - which I believe PornHub are already using.

[0] https://en.wikipedia.org/wiki/Perceptual_hashing

[1] https://www.microsoft.com/en-us/photodna

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Re:Inside Pornhub by toomuchtodo on Wednesday February 23, 2022 @11:35AM (#30442906)
It seems like a natural evolution of PhotoDNA to have this content (non consensual adult content) flagged programmatically, with a flow for folks to attest to content to be fingerprinted and scanned for.
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