[Gimp-user] restoring faded transparencies

2010-02-19 Thread Alanp
 snip 
 
 A very fair question!  The answer is simply that the colours in the print
are
 far more natural than those in my newly digitised slide.  For example,
in
 the print the sky contains grey, rainy looking clouds below a pale,
whitish
 background of higher cloud.  The digitised slide makes the grey clouds
more
 blue, and the background cloud layer has splashes of yellow!  A
comparable
 change is in the mountain peak below the clouds - formerly a steely grey
 colour, it is now quite bluish.  The view in this picture is one with
which I
 was very familiar, and I am certainly more comfortable with a grey
mountain
 than a bluish one!
 
 Are you using the restore.py plug-in?  If so, can you enlighten me as to
the
 mechanics of adding this to my version of GIMP?
 
There is lots of useful information to be found in 

http://forum.meetthegimp.org/

Might I suggest you have a look there and then, if there is anything
more you would like to know, or discuss, please come back here.

Norman


After a lot of too-ing and fro-ing, plus an element of magic, I actually
found the Restore item in the menu!

I then tried two scanned slides with Restore.  The one I have described
already (boy in Napoleon outfit in front of mountain) and another, a field of
red poppies with fringing bushes.  The former showed little change after
trying all variations of Restore, notably that the blue tinge was not
lightened and the yellow splashes in the sky stayed there.  The poppies,
however, did shown an improvement in that the fringing bushes certainly became
more green than before.

Having no instructions for using Restore, I assume I used in correctly - I
suppose there's not much more to be done than ring the changes on the
controls?

Where does one find the file referred to earlier - photorestore.pdf?

Alan

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[Gimp-user] restoring faded transparencies

2010-02-15 Thread Alanp
I was scanning a lot of colour transparencies, some taken up to 40 years
ago,
and found that in some cases the colours had deteriorated badly.  After a
lot
of experimenting I have developed an automatic way of improving the digital
scans using gimp.  I have put a technical article, the gimp plug-in, and a
collection of the good and bad results at
www.lionhouse.plus.com/photosoftware/restore. I would be interested in
hearing
from anyone who has worked on this problem and if you try the plug-in let
me
know how it works for your pictures.

I am in the fortunate position of having a professionally made print, some 20
years old, from a transparency (Kodachrome) some 40 years old, one of very
many!  My first attempt with my new slide scanner was on this same slide, and
hence I am able to see the colour changes over those past years.

I would like to try your restore.py plug-in, and have copied the restore.py
file to the script directory.  However, here I am stuck, as I have to admit
that I don't understand your instructions in step 3!  Could you be so kind as
put step 3 in a more elementary form!  Many thanks,  Alanp

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