Submitted By Anonymous Submitted On Mar16/14, 03:04 Dimensions 1585x921px File Size 657.26KB	Views 547 Votes 3 Favourites 0	8/10 Download
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>Now, to just find some way to extend that hydrus program you mentioned so it can sort of tineye your local images and rip just their tag data from booru sites when they're matched.

As it turns out, there are two ways to use hydrus: the insane person way, and the way people should actually use it 90% of the time.

When you create tags in Hydrus, they go into a database. By default, it's just a local, personal database. The insane person way (which is the way I'm doing it) is to never go farther than that and just build your own database from the ground up. BUT:

Hydrus is actually designed as a peer to peer collaborative tool. The idea is that you log into a tag server run by someone decent and grab their database info as well as contributing your own tagging info back (which they can decide to approve and add to the database if it meets their standards). The important thing is that the database isn't just a collection of tags, it's a collection of IMAGE HASHES TIED TO TAGS (think dna/fingerprint of each image). So if you show the database an image it's seen before, it will tag it automatically.

tl;dr: optimally you would use hydrus like this:

Connect to server and download massive database
Drag your collection of images into hydrus
Hydrus auto-tags 80-90% of them because it's seen them before

I'm not doing this, but only because:

I'm a little insane/masochistic
You'd have to find a server with a tagging system you respected
You'd have to find a server with a community around it that was actually tagging the stuff you've got. There's no reason hydrus can't do this, but I don't think it is yet: the only server I know of is the one the author maintains, and I suspect most of the tagging is anime/4chan/meme related.
It's never going to be perfect: there will always still be a few images that you'll toss in and the database will go "wtf is this?" because they're too obscure.

In theory it could be a really powerful tool: a hydrus server run by some furry community could maintain a decent enough database that it would be able to recognize most images (just consider how hard it would be to find a good furry porn picture that e621 doesn't recognize). But that requires someone to actually start and maintain said server, so for now it's local tagging.

For the record, again, there are also features built in to rip from booru sites, including e621 specifically, which I believe includes pulling the tags. I probably won't use this because my tagging philosophy/design is different, and not nearly as insanely detailed (I can't ever, EVER imagine a scenario where I would need to search by EYE COLOR, for example), but it is there.