[markvdb]

Automated page turning is an incredibly complex problem to tackle. It won't gain you as much as you'd think either. "Book" and "page" are a surprisingly difficult to define categories.

If my experience helping to build the diybookscanner.org project taught me anything, it's that picking the low hanging fruit of small efficiency improvements to the (semi-)manual process is so much more effective...

[donalhunt]

Which is probably why some of the scanning locations used something very similar to this DIY effort (I'm familiar with the Oxford, UK location that existed in the mid 00s). Humans turned the pages with the finger tips mentioned in another comment.