Re: removing moldstains from old photo Hi Rutger,
I hardly ever post to any of these forums, but I was in here looking
for something and came across your dilemma and thought I might be able
to help.
I don't know anything about how to automate a process for what you're
trying to do, but I have used the Dust & Scratches filter with
satisfactory results on some recent photos that had considerable mold
stains and other surface blemishes. I downloaded your image and spent
about 10-15 minutes on it just using this filter. You can see it here:
http://www.flickr.com/photos/92495156@N00/191318450/
It seems to work better in some places than others, so I used the Lasso
tool to select and copy certain sections to their own layers. This way
I could apply the filter to each section separately and adjust the
parameters to get the best results. I started with the large area of
wall at the top right, then moved onto the sleeve, his hand, various
sections of the jacket, and then his face. About 5 or 6 layers I think.
I didn't try to fix the whole image, just enough to give you an idea of
what can be done with the Dust & Scratches filter.
When you open it (under Filter>Noise), you'll see sliders for Radius
and Threshold. Start with both at 0, then slide the Radius up until the
blemishes disappear. (Make sure the "Preview" box is checked.) Much or
all of the texture will disappear with them, but as you slide the
Threshold up, the texture will return. Just don't go too far or the
blemishes will return too. I found that having both sliders at around
10 seemed to work on most of the sections, but not all, so play around
with them. Like I said, it seems to work better in some places than
others, so you'll probably still need to use the Clone tool for certain
areas, but hopefully this will help. By the way I tend to use the Clone
tool set alternatively to Darken and Lighten, rather than having it set
to Normal.
Good luck and I hope this was helpful :)
JD
JD
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