Excellent work [emoji4].
Just a small tip which maybe useful.
Using this app, pages can be scanned from mobile camera in white printable background, like a real scanner. It also features a batch scan mode for quick scans of multiple pages and compiles into PDF Ebook.
For optimum quality scan, scan the pages in well lit area or with flash on and make sure that the camera lens is clean from any smearing, which may result in blurred images.
Take a look at "CamScanner -Phone PDF Creator"