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changing only specific colors

Apr 5, 2012, 16:16 (This post was last modified: Apr 5, 2012 16:19 by kevin32.)
Post: #1
changing only specific colors
Hi. I want to select a specific color from within the image, and change all similar colors within that image to a different color. In other words, after using the Color Picker Tool to select a color from the image, I want to take the selected color (and everything in the image that is equal to or similar in color), and change them all to a different color.

I tried using the Path's Tool to create an outline in the image, and changing colors that way, but it changes all the other colors in the selection I don't want to change. I just want to change all colors in the image/selection that are equal to or similar to the selected color. How do I do this? Thanks.
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Apr 6, 2012, 09:22 (This post was last modified: Apr 6, 2012 09:59 by kevin32.)
Post: #2
RE: changing only specific colors
Which option would you consider gives a more 'natural' appearance? For example, I'm changing hair color, but in a way that certain colors in the hair should be consistent with the desired color. In other words, If most of the hair is natually colored black, but there are some grey areas in the hair, I want to change those grey areas to black so that it appears consistent/natural. Again, in my experience, changing colors using the path's tool gives an unnatural appearance.
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Apr 6, 2012, 14:54 (This post was last modified: Apr 6, 2012 14:55 by kevin32.)
Post: #3
RE: changing only specific colors
Is there an option within Rotate Colors, that makes the selection appear gray or darker (black)? Looks like it only changes to all colors other than these. Even 'Grey Options' only changes the greys to another color. (I think I was still editing my previous post at the time you last replied).
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Apr 9, 2012, 14:11 (This post was last modified: Apr 9, 2012 14:47 by kevin32.)
Post: #4
RE: changing only specific colors
http://postimage.org/image/6jecch9gb/

The goal is to change the grey hair colors to black but giving it a natural look.
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Apr 9, 2012, 20:06
Post: #5
RE: changing only specific colors
Thank you for the tips.
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Apr 10, 2012, 11:30
Post: #6
RE: changing only specific colors
Some of the tools and options you mention I haven't used before, so I have some questions:

> I duplicated the red channel, how do I invert it?

> When you say 'increase contrast', do I adjust the sliders on the 'input level' or the 'output level'?

> For the freehand tool, do you draw a general smooth line around objects where the colors are clearly distinct? or are you meticulous and drawing in the crevices of each hair, creating a jagged line?

> How do I save the selection to channel? I see some options in the channel settings, but nothing about 'saving' the selection to the channel.
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