researches have somehow managed to create a page scanning device that allows you to scan an entire book by literally flipping through its pages.
the scanner uses super high speed camera running at 500 frames per second to grab the image of the page. it then uses lasers as a reference and some 3d tricks to straighten out the curves of the page image so that it can be returned to its normal flatness. this method allows the book scanner to capture over 200 pages per minute, which is way faster than the one google is using.
you can read more about this crazy page flipping book scanner over at popular science.