Layer Mask Question?

Erisian · **Posted:** Wed Sep 05, 2012 8:33 pm **(#21)**

Don't click on the eyeball. Click to the right of the icon to remove the highlighting.

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

PegLeg44 wrote:

I have found that if I do a Channel to Selection for each color and make a new layer for each color and paste the RGB color (the exact RGB color from the color pallet ie 255 red - 255 green etc), for each channel and then set the layers to screen on top of a black background it gives me the exact same image with each layer avaliable for editing with filters or brushes. I could then do a Layer New from Visible to render a single layer result.

Its a lot of work though.

Alan

sure a lot of work

try Colors/Components/decompose

mind that the output will be in greyscale mode, to give to gimp full editing capacities has to be changed in RGB (from image/image mode)

to reassemble in a color image with its channels you may use Colors/Components/compose

PegLeg44 · **Joined:** Feb 14, 2012 **Posts:** 426

Erisian wrote:

Don't click on the eyeball. Click to the right of the icon to remove the highlighting.

Ah, That does the trick. I don't know why I never tried that. :bigthup

Alan

PegLeg44 · **Joined:** Feb 14, 2012 **Posts:** 426

PhotoComix wrote:

PegLeg44 wrote:

I have found that if I do a Channel to Selection for each color and make a new layer for each color and paste the RGB color (the exact RGB color from the color pallet ie 255 red - 255 green etc), for each channel and then set the layers to screen on top of a black background it gives me the exact same image with each layer avaliable for editing with filters or brushes. I could then do a Layer New from Visible to render a single layer result.

Its a lot of work though.

Alan

sure a lot of work

try Colors/Components/decompose

mind that the output will be in greyscale mode, to give to gimp full editing capacities has to be changed in RGB (from image/image mode)

to reassemble in a color image with its channels you may use Colors/Components/compose

I tried this for the first time also and it works great. I finally get it. :tyspin

Alan

saulgoode · **Posted:** Wed Sep 05, 2012 9:55 pm **(#25)**

PegLeg44 wrote:

I have found that if I do a Channel to Selection for each color and make a new layer for each color and paste the RGB color (the exact RGB color from the color pallet ie 255 red - 255 green etc), for each channel and then set the layers to screen on top of a black background it gives me the exact same image with each layer avaliable for editing with filters or brushes. I could then do a Layer New from Visible to render a single layer result.

Its a lot of work though.

http://chiselapp.com/user/saulgoode/rep ... ompose.scm

Command is "Layer->Decompose RGB" and ignores alpha channel.