Giving images tags and filtering them based on it

[irkode]

guess this one is still valid which says you cannot directly tag resources (images) but provides a guidance how it might be overcome.

Image galleries based on "tags" stored in data file

I’d appreciate a pointer on how I could achieve the following: Image galleries generated from a ‘tag’ specified in a shortcode / page frontmatter. [This is trying to replicate the WP Media Tags and Tag Gallery plugins to generate the gallery based on the media tag set] e.g., I have a series of images that can be classified according to their content / theme / etc. I have this in a format that I can convert to JSON. /path/to/interesting_image.jpg tag1,tag2 /path/to/interesting_image2.jpg …

won’t be a trivial task to do