General Category > General Discussion
How can I remove moire patterns from a cover with GIMP?
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Arseen:
The moire effect is bad.   :-\

What scanner program you are using?
Could you take print-screens of you scanner options so we could try to find the option to remove the moire before scanning?  :)
arny91:
The scanning software is XSANE.
it hasn't any descreen option except for the median filter. But isn't the descreen/derasterization option of the other scanning software a median filter, in fact?

Screenshot: http://www.mediafire.com/?m9qy7428mxve0cs

P.S: Neither the original hp precisionscan ltx, which couldn't be used anymore on windows 7 had descreen.
Arseen:
Did some research and didn't find any leads to solving the problem.

Only what we can try is take a scan with full median filter on, and see if that removes the moire.


--- Quote ---But isn't the descreen/derasterization option of the other scanning software a median filter, in fact?
--- End quote ---
That I don't know.
arny91:
This is the back cover with median filter on, radius 2(it's the min value)

http://www.mediafire.com/file/95kq6cltlzufa7j/hybrid-back-median.tiff
Arseen:

--- Quote from: arny91 on May 08, 2011, 03:15:50 PM ---This is the back cover with median filter on, radius 2(it's the min value)

http://www.mediafire.com/file/95kq6cltlzufa7j/hybrid-back-median.tiff

--- End quote ---

What happens if you put bigger value?
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