i've recently been working with someone to digitally archive an older magazine without a current publicly available digitized version - they've recently sent me the first batch, and while thankfully all content is on frame, a fair amount of the pages are warped and/or skewed, due to having been taken with a camera rather than a scanner.
i've been trying various methods to normalize all pages and have them straight and with clear color balance, and the most successful method yet has been running them through camscanner's (the android/ios app) automatic deskewing, dewarping and color correction filters; however this is not optimal, as it automatically downsizes the pages and converts them to jpeg, in the process losing some detail i'd rather still have for the sake of fidelity.
i've also tried various other document deskewing/clearing programs like scantailor advanced and page-dewarp, but none of them have produced such high quality results as camscanner's, mostly due to not being able to dewarp pages, only deskew them.
does anyone know of any program/script that would achieve similar results without downscaling the content? thanks in advance for any help.