detect blank pages and bar codes?

[schmitch]

hello, I stumbled upon doctr on hn and I'm curious does doctr also supports detecting blank and maybe bar codes?
currently we use Omnipage as our OCR and it supports both (well barcode detection is a little bit akward with omnipage, so we looking into it do roll our own)

however is there a way to tell the difference betweeen a page with a picture and a page that is blank or at least has maybe punch holes but nothing else?

(btw. I'm completly new when it comes to AI and stuff)