There are DIY book scanners (http://diybookscanner.org http://diybookscanner.org) and products such as the Fujitsu ScanSnap SV600. The SV600 has decent feature

There are DIY book scanners (http://diybookscanner.org http://diybookscanner.org) and products such as the Fujitsu ScanSnap SV600. The SV600 has decent features like page-detection and finger-removal (I recommend using a pencil's eraser tip). I have personally used it to scan dozens of books, with satisfactory results.