Removing a "ghost" image
Rhett
I am new to Photoshop, and have been fascinated by the following problem:
It is easy to place a monochrome image (say, a letter) on a layer and then
determine its opacity, so that it gets a ghostly appearance and the layers
underneath are partly visible.
The problem: How go the other way? How remove a "ghost" image? How
subtract the "ghost" so that (most of) the underlaying image reappears in its
(almost) original form?
I know this is not totally possible, because some information is lost, but it
should be possible to make a mask, filter or adjustment layer that, together
with the opaque original of the "ghost", can restore the image as much as
possible, now without the "ghost" image. It is like subtracting one layer
from another.
Any thoughts and suggestions are most welcome. Thanks.
Rhett
edjh
turn off the visibility.. Or am I not understanding what you are asking?
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"Rhett" <rh...@nospam.online.no> wrote in message
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Rhett
lol ... I am of course talking about a flattened image with a "ghost" .... lol
"edjh" <edj...@hotmail.com> wrote in message news:GIec8.154730$h31.11...@e420r-atl1.usenetserver.com...
Al Denelsbeck
.
Rhett wrote in message ...
As you said, the original information is lost. What you'd have to do is
change the colors back to match, mostly with Saturation and Lightness, but
Contrast will likely play a part too.
If you're lucky, the 'ghost' was nice and neutral, like gray, and not
some other color shade. But you won't in any way be subtracting a layer.
You'll be adding one, if not just changing the background itself.
- Al.
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RossF
Select the ghosted areas with a feathered selection, and try some
channel blending, or tonal adjustments. You may need to touch up using
the Rubber Stamp tool using various blend modes. Kind of a vague
answer, but it's a problem that requires a hands-on solution.
Ross
On Mon, 18 Feb 2002 20:31:25 GMT, "Rhett" <rh...@nospam.online.no>
wrote:
Bobocito
> subtract the "ghost" so that (most of) the underlaying image reappears
in its
> (almost) original form?
With a flattened image you will need all your Photoshop retouching skills to
evaluate and fix the image. How about posting the image on the net and
posting a URL in the newsgroup? You might get some more specific advice that
way.
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Bobocito
Note to self: Compose clever sig.
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Rhett
To Al and Ross:
Yes, that is how I have done it, by selecting the ghost with the Magic Wand
and manually ajusting its Saturation and/or Lightness, and finishing with some
Clone Stamping. This gives a reasonable result. I had hoped for a more
systematic approach.
To Bobocito:
Thanks for the suggestion, but I don't think the actual images I am working
on will cast more light on a GENERAL way to solve this problem.
"Rhett" <rh...@nospam.online.no> wrote in message news:xwdc8.6129$%m1.1...@news4.ulv.nextra.no...
Stephan
Stephane
"Rhett" <rh...@nospam.online.no> wrote in message
news:xwdc8.6129$%m1.1...@news4.ulv.nextra.no...
Rhett
I am working on removing letters from travel-brochures
and other images related to the tropics, so that I can
use them as textures in a 3D game map. If you have ever
created levels for Half-Life or other games you will
know what I am talking about.
I had hoped that there would be a systematic method
to solve this problem, as I am sure many would need
the ability to do this. Hmm. Perhaps I should spend
some time making a plug-in myself and then offering
it here, making a positive contribution to this news group.
Rhett
"Stephan" <beedoo...@hawaii.rr.com> wrote in message news:BNnc8.29275$dx6.8...@twister.socal.rr.com...
Stephan
Your question made me laugh because I remember this guy I know spending
hours removing the Corbis mark on an image to save the few bucks they wanted
for it
BTW the pictures you intend to use probably belong to somebody, why don't
you contact this somebody and ask him or her if you could use their images,
most photographers are really nice people and i bet you'll end up getting
the pics without the letters. Myself, being a very nice photographer and
living in the tropics, could also give you some pics if you tell me what you
need
Stephan
"Rhett" <rh...@nospam.online.no> wrote in message
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Rhett
commercial image banks on the Internet. Perhaps I should.
What I have done is look at printed material, illustrations
in books and webshots.com.
Well, I suppose someone owns any picture, illustration or
other image. But I am not a professional graphic designer
and I do not intend to use any picture (or, more rightly, a
part of a picture as a texture) to earn money. Map level
design is a hobby. You make maps and share them with
others. I do not plan to pay for any image I use as a basis
for a texture.
But I am a professional software developer, and the idea
of making a plug-in for Photoshop got me going. I have
already downloaded the SDK (Software Developing Kit)
for Adobe Photoshop from http://partners.adobe.com/
Since I work with Microsoft Visual C++, I immediately
cought on to it, and have already (this evening) made my
first plug-in, based on a sample that followed the code.
This is a so called 8BF file that you simply put in your
Plug-Ins > Filters folder.
That was fun! It is not difficult at all. I have now my own
plug-in under Filter in Photoshop :) Now I will try to
solve the "ghost" problem by making a plug-in that, based
on a designed 100% opaque model of the ghost can
calculate the opacity of the "ghost" and clean the under-
laying image of it. We will see. Perhaps a different method
is better, where you simply select the ghost as precisely as you
can, give the ghost's colour and a guess on it's opacity and
then let the filter do the job until the result is good. This is
something I need to study closer.
Funny you live in the tropics. Nice. But remember, I can
not pay for any photograph.
Rhett
"Stephan" <beedoo...@hawaii.rr.com> wrote in message news:zxwc8.12166$8a2.4...@twister.socal.rr.com...
edjh
to do it to even one image, let alone as a plugin. The problem is that the
pixels are comingled. There's no way to say that THIS pixel belongs to THAT
image and vice versa. Once they are flattened they are all one image.
There are lots of pix of the tropics around. I am sure you can find bettre
sources than travel brochures.
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"Rhett" <rh...@nospam.online.no> wrote in message
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Bobocito
Over 20,000 free public domain pics.
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Bobocito
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"Rhett" <rh...@nospam.online.no> wrote in message
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Stephan
>
> Funny you live in the tropics. Nice. But remember, I can
> not pay for any photograph.
I said give not sale
Let me know
Good luck with your project
Stephan