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Color Swapping


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#1 JEJoll

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Posted 11 February 2015 - 08:32 AM

I'm working with a scanned pencil sketch.

 

I want to make the background transparent, but manually using a magic wand tool or what-have-you is waaay too time consuming.

 

I've found a method that will do it almost automatically, but in order to do it, I need to be able to swap out one color for another, particularly black to white.

 

I only want to swap out the EXACT color RGB (0,0,0) for RGB (255,255,255). Does anyone know how this can be done/online tools/software that are capable of this, or another easy method of making a background transparent without manual cropping?

 

Thanks



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#2 Martel

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Posted 11 February 2015 - 08:50 AM

I would set my magic wand to global.
if the background that you are eliminating is the same it will select all like colors.
saving as a .png will keep the transparent background.

#3 JEJoll

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Posted 11 February 2015 - 09:01 AM

I would set my magic wand to global.
if the background that you are eliminating is the same it will select all like colors.
saving as a .png will keep the transparent background.

Will this remove any like colors INSIDE of what I want to keep? The color inside my sketch is more or less white, as is the background



#4 Martel

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Posted 11 February 2015 - 09:18 AM

Set the magic wand to a lower setting like 25%. that will control the strength.
holding your control key while selecting will allow for multiple areas to be individually selected. If you ctrl+click and it grabs too much usr ctrl+z to back up
The global setting will also select the inside colors.
save a backup copy before you begin.

#5 shanepearce

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Posted 12 February 2015 - 05:25 PM

startbild_engl-small.gifhttp://www.irfanview.com/



#6 shanepearce

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Posted 12 February 2015 - 05:27 PM

I only want to swap out the EXACT color RGB (0,0,0) for RGB (255,255,255). Does anyone know how this can be done/online tools/software that are capable of this



#7 JEJoll

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Posted 12 February 2015 - 06:27 PM

I found a super easy tool to accomplish easy background cutting without destroying any similar colors in the foreground: http://www.vertustech.com/fluidMask/overview.html






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