Has anyone looked into image tagging and other similar features such as face recognition etc.?
I think these kind of features got a bad reputation due to privacy concerns when using centralized systems, but with HubZilla's permission system and decentralized nature it could actually be done in a privacy preserving manner.
Looks like this php-wrapper for OpenCV recently got rewritten for php7, so it might be a good candidate for use optional in Hubzilla? See: https://www.xarg.org/project/php-facedetect/ https://github.com/infusion/PHP-Facedetect
I also found this, as maybe a simple fallback on webhosts: https://github.com/mauricesvay/php-facedetection
This phython project might be a good inspiration of what additional features could be nice in the gallery of HubZilla: https://github.com/hooram/ownphotos-backend
By the way: is it possible to show multiple location markers the same time in an overview of a gallery?
I am really just a beginner developer, so this is probably out of my league to implement, but if someone more experienced was interested to give it a go, I would definitely try to support that effort.
P.S.: Similarly a friends location tracking & check-in system would be cool, is this: https://gitlab.com/zot/ownmapp
still being developed?