[brownbat]

I've used some free apps that turn phones into document scanners. Almost all banks I use have something like that embedded for check deposits. Maybe they're just doing deskew rather than dewarping though... loose documents aren't usually warped like book pages.

The next hard problem would be help with DIY book scanning. Like the camera could sit over my shoulder and detect when I've turned a page, then automatically take a picture of the new page. Then OCR kicks in, and conversion to EPUB, preserving graphics when pages have non-text elements. Mostly just feel like we can probably do better than the massive contraptions over at www.diybookscanner.org