[01ce8c91872dd6d]

ask HN: what is state-of-the-art perceptual hashing tech for images?

[higginsc]

Check out SSCD from Meta https://github.com/facebookresearch/sscd-copy-detection

(full disclosure: I am an employee who has worked with this team before internally, but I was not associated with this paper)

[bobosha]

perceptual hashing is one approach to image similarity, there are many others. The au courant way of doing ANN search is to use embeddings from the powerful pre-trained models. In this tool the creator uses OpenAI's CLIP.

[swyx]

TIL of "au courant".

the author mentions CLIP, but it looks like he made his own variant. i wish i knew what it was since it seems he is now AWOL

[heipei]

Look at the papers of Andrew Zhai (Pinterest) and how they do it.