09-02-2017, 09:30 AM
Quote:...Putting a black sheet of paper under ...
Can sometimes be problematic if using a sheet-feed scanner.
However, back to the original method and good practice for me. I changed the work-flow a little. I think this is a little more economical.
Color select
Invert selection
Copy selection
Paste-As -> New Image
Remove alpha channel
Optionally, Auto-white-balance.
Then to semi-automate the process, that sequence, assigned to keyboard shortcuts.
If you can be bothered, the whole thing, 3 and a half minutes