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Cardboard Warriors forum :: Papercraft and Modeling discussion :: PRINTING, BUILDING, FINISHING and STORAGE :: Decolorizing before printing
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AuthorTopic: Decolorizing before printing (Read 779 times)
exodous
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Decolorizing before printing
« Thread Started on Jan 7, 2011, 3:14pm »
I was wondering if anyone knew of an easy fast way to de-colorize before printing so they can be colored by hand. I'm playing Hero Quest with my nephews and I think it would be fun for them to color their miniatures with colored pencils rather than just printing them already colored. I can do this by opening the files in gimp and editing them there but if there is an easier faster way to do it with multiple miniature sets at a time that would be great.

I remember when I had a graphics class there was a way to print the image leaving the colors out, so it wasn't like printing in gray scale but just printing the black in the image but I can't find that option now, it might have been a specific program I was using.

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Tommygun
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Re: Decolorizing before printing
« Reply #1 on Jan 7, 2011, 3:29pm »
The only way I know how to do it is with a photo editing software.
In Gimp you can pick the black color (with the Color Tool) and next do a copy then paste to a new blank page.

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Re: Decolorizing before printing
« Reply #2 on Jan 7, 2011, 9:09pm »
In Gimp you could do color to alpha three times, one for each color (R,G,B). That would let one the black lines.
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Re: Decolorizing before printing
« Reply #3 on Jan 8, 2011, 10:29am »
If you have paint.net all you have to do is select the magic wand tool, set the flood mode to global, select the black outline on the figure, invert the selection, and hit delete. print it or save it as an image for later.
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Re: Decolorizing before printing
« Reply #4 on Jan 18, 2011, 11:39am »

Jan 8, 2011, 10:29am, imnntt wrote:
If you have paint.net all you have to do is select the magic wand tool, set the flood mode to global, select the black outline on the figure, invert the selection, and hit delete. print it or save it as an image for later.


same in photoshop, although you may have to zoom in to be able to choose precisely.
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Re: Decolorizing before printing
« Reply #5 on Jan 22, 2011, 11:45am »
A brutal approach when all else fails:
Most applications have "greyscale" option. Select that.
Then whack the contrast up (perhaps with a little brightness) and that gets rid of all the midtone greys. This is how I remove graph paper lines and pencil from my scans.

Of course you might lose a lot of detail in the process...
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Re: Decolorizing before printing
« Reply #6 on Apr 4, 2011, 2:40pm »
I found a method that perfectly erases all color of the figure:

Open the figure in GIMP.
Go to Layer>Transparency>Color to Alpha
Change the color to be erased to FF0000 (red)
Repeat for 00FF00 (green), 0000FF (blue), FFFF00 (yellow), FF00FF (Magenta) and 00FFFF (Cyan)

Now ALL color of the figure became transparent, but the lines remain untouched. It is much more faithful to the original lines than the previous methods. All you have to do is create a new white layer below the original layer and put colors in this new layer. Like painting an old-style animation cell.
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Re: Decolorizing before printing
« Reply #7 on Apr 4, 2011, 4:49pm »
Thanks, good tip!
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Re: Decolorizing before printing
« Reply #8 on Apr 14, 2011, 6:41am »
Nice work Hackbarth. :)
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Re: Decolorizing before printing
« Reply #9 on Apr 30, 2011, 9:43am »

Apr 4, 2011, 2:40pm, hackbarth wrote:
I found a method that perfectly erases all color of the figure:

Open the figure in GIMP.
Go to Layer>Transparency>Color to Alpha
Change the color to be erased to FF0000 (red)
Repeat for 00FF00 (green), 0000FF (blue), FFFF00 (yellow), FF00FF (Magenta) and 00FFFF (Cyan)

Now ALL color of the figure became transparent, but the lines remain untouched. It is much more faithful to the original lines than the previous methods. All you have to do is create a new white layer below the original layer and put colors in this new layer. Like painting an old-style animation cell.


Sweet.

I'm going to have to try that.

Thank you again for sharing
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Re: Decolorizing before printing
« Reply #10 on May 5, 2011, 9:37am »
Now with a tutorial, with screenshots!

Descolorindo Miniaturas de Papel, google-translated
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