Like you, I have a bunch of books on various bookshelves in the house. I also have a number of collapsing cardboard boxes in my basement filled with books from my parents'/grandparents' houses. At some point, I really need to sort through all of these and figure out a) what even is there b) what do I keep to put on shelves and c) is there anything worth selling to a shop or giving to the library vs tossing? Complicating this is that many of these books are ancient, and even newer ones aren't necessarily in pristine condition.
I have an old CueCat lying around I was going to use to scan barcodes on books new enough to have them... that'll be tedious enough, but going through the rest manually is going to be a giant project (which is part of why they're still there in my basement).
I don't see it on the site from a cursory review (apologies if I missed it): do you support importing from ISBNs (such as scanned by a CueCat)? I'd also be quite interested in the machine vision aspect others have mentioned here (though since they aren't on a bookshelf, it would likely be individual photos of each book as they are pulled out of the box)...
Tying into that, I'm curious what the workflow for inputting books will be like, both for my boxes-o-books case, and for the general bookcase import case. I could 100% see myself using this if it was a nice straightforward brainless process I could bang out in an afternoon while watching a show, but if it's more of a manually-search-and-input process, I'm definitely going to lose patience before I finish them all :)
Tacking onto what others have said about automated labeling, that would be extremely useful too---especially for the books in poor condition, but even for the nicer ones, just so that I could get a handle on them all. I have a Bluetooth label printer that could be fantastic here...
I'll follow this project with interest for sure!