Yep, exactly, just looped through each image with the same prompt and stored the results in a SQLite database to search through and maybe present more than a simple WebUI in the future.
It's wrapped up in a bunch of POC code around talking to LLMs, so it's very very messy, but it does work. Probably will even work for someone that's not me.
If you want to see, here it is:
https://gist.github.com/Q726kbXuN/f300149131c008798411aa3246...
Here's an example of the kind of detail it built up for me for one image:
https://imgur.com/a/6jpISbk
It's wrapped up in a bunch of POC code around talking to LLMs, so it's very very messy, but it does work. Probably will even work for someone that's not me.