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+--- Thread: remove print pattern (/Thread-remove-print-pattern)
remove print pattern - Tawe19 - 12-05-2021
this is a scan from an old photo.
[attachment=7188]
the original photo had this pattern of dots throughout, i'm guessing that this was a 'feature' at the time.
does anybody know how I might reduce or eliminate the effect ?
many thanks
Tawe
RE: remove print pattern - rich2005 - 12-05-2021
Yep, satin finish photographic paper, does not scan well. There are various ways, scan the photo again upside down, invert the image, overlay on the original and use a layer mode.
I use the fast fourier transform (FFT) and for this the gimp_gmic_qt plugin from http://www.gmic.eu
You do need the latest version 3.0.0
https://gmic.eu/files/prerelease/gmic_gimp2.10_win64.exe
because as well as FFT there is a very new denoise filter and a sharpen filter.
The whole thing goes like this https://youtu.be/QzgYLRnc-_E duration a couple of minutes.
Guessing that is only part of the photograph, you will need to experiment with the denoise and sharpen filters for best results.
[attachment=7189]
RE: remove print pattern - Tawe19 - 12-06-2021
Thank you very mush Rich.
Especially for the instructive video.
May I ask : what is the significance of doing a repeat scan ?
(I suspect some new technique may be coming my way).
thanks,
T
RE: remove print pattern - rich2005 - 12-06-2021
(12-06-2021, 07:01 PM)Tawe19 Wrote: May I ask : what is the significance of doing a repeat scan ?
(I suspect some new technique may be coming my way).
It is this: https://www.gimp-forum.net/Thread-Clearing-canvas-texture-from-photo-of-artwork?pid=12984#pid12984
RE: remove print pattern - denzjos - 12-07-2021
Another option is using GMic-Qt / Repair / Descreen and then use the gimp despeckle filter (and eventually use 'sharpen') :
[attachment=7201]
[attachment=7202]
[attachment=7203]
RE: remove print pattern - Tawe19 - 12-07-2021
(12-06-2021, 07:20 PM)rich2005 Wrote:(12-06-2021, 07:01 PM)Tawe19 Wrote: May I ask : what is the significance of doing a repeat scan ?
(I suspect some new technique may be coming my way).
It is this: https://www.gimp-forum.net/Thread-Clearing-canvas-texture-from-photo-of-artwork?pid=12984#pid12984
Thank you Rich
the link makes it easy to understand.
much appreciated
(12-07-2021, 09:14 AM)denzjos Wrote: Another option is using GMic-Qt / Repair / Descreen and then use the gimp despeckle filter (and eventually use 'sharpen') :
Thank you Denzjos - another excellent suggestion.
many thanks.
I would just like to take this opportunity to both Rich and Denzjos for their speedy responses and excellent solutions, which I'm sure will be useful to other users.
Many thanks.
RE: remove print pattern - Tawe19 - 12-19-2021
Hello Everybody,
This was my finished version.
We required it for a family event, and were pushed for time.
It looks so much better than our starting version.
I could only have done it thanks to the marvellous help and guidance that I received here from the above members (Rich & Denzjos).
Many thanks.
Best wishes for a happy and healthy new year.
[attachment=7247]
RE: remove print pattern - denzjos - 12-19-2021
Outstanding, nice work
RE: remove print pattern - Krikor - 12-19-2021
(12-19-2021, 01:53 PM)Tawe19 Wrote: Hello Everybody,
This was my finished version.[...]
Wow! Excellent ! Bravo!