The good folks over at
DIY Book Scanner have been developing these types of scanners for a long time. Although most of their designs tend to use a “v” shaped holder (the cradle) for the book and a “v” shaped glass to flatten the page (the platen) which would minimize warping of the page when it is opened against the resistance of the binding. They also usually have 2 cameras, each aligned directly facing the left or right page.
Both of those techniques minimize the required software calculation to correct image warpage and perspective shift. There was some enterprising programmers working on software that would automagically correct all that AND provide some OCR AND maybe even bake some cookies for you…. I haven’t been active over there in awhile so I don’t know the current status of those projects…. They may have dropped the cookie feature
The last I heard they had a scanner that could scan/correct/ocr
several hundred pages per hour (800 pph comes to mind). And it’s all free, except for the material and time investment.