How to clean greyscale scans?

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dadaniel
Posts: 10
Joined: Tue Nov 22, 2011 12:14 pm

How to clean greyscale scans?

Post by dadaniel »

I want to use XNView's batch mode to "clean" my greyscale scans. These are written notes on dirty,non-white paper or photocopied with too dark setting.

Turning contrast up gives good results but tends to make the lines too tall and look oversharped...

What are the recommended XNView picture operations for this task?
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Peter2
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Posts: 1365
Joined: Thu Nov 24, 2005 3:07 pm
Location: CH

Re: How to clean greyscale scans?

Post by Peter2 »

IMHO the only way to find it out is "try and error". There are so many technical and personal criteria to consider that it is nearly impossible to give a standard recipe. Sometimes a good way is to scan it again with other settings.

Peter
XnViewMP <Current version> German, XnConvert <Current version>, Win 10
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Drahken
Posts: 884
Joined: Sun Apr 10, 2005 4:29 pm

Re: How to clean greyscale scans?

Post by Drahken »

Try it out in regular xnview first, then you can see the results of your attempts in realtime. Then take your best results & batch process them.
What I find tends to be the best method to clean up greyscale/scanned images is to tinker with the levels. (Images->adjust->levels, or just "L".) You will usually see a clumb of large peaks at each end, pull the sliders down past these large clumps of peaks & you will usually get a good result. Play around a bit to find the best settings.
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