On my printer (a Canon Pixma, fwiw), default scan settings lead to "washed out" images, and increasing the contrast generates better scans. In my case, the -contrast imagemagick setting was not that great (even when doubled for more effect). That's why I came up with this half-custom -level 10%,90% command. It now works great, at least for B/W text documents.
For the sake of completeness, I have added both filters in this MR. Not sure whether you want to provide both to all users, or if you find it confusing, in which case I'll let you choose the one to provide to all your users!
I have included translations to languages I know, but I'm not a native German speaker.
Added a filter to increase contrast.
On my printer (a Canon Pixma, fwiw), default scan settings lead to "washed out" images, and increasing the contrast generates better scans. In my case, the
-contrastimagemagick setting was not that great (even when doubled for more effect). That's why I came up with this half-custom-level 10%,90%command. It now works great, at least for B/W text documents. For the sake of completeness, I have added both filters in this MR. Not sure whether you want to provide both to all users, or if you find it confusing, in which case I'll let you choose the one to provide to all your users!I have included translations to languages I know, but I'm not a native German speaker.