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Please help me understand how to use a color channel as a mask
#3
(09-29-2021, 10:33 AM)rich2005 Wrote: Not into games, and do not really follow all of that video. However,   Lots of screenshots so having to group them:

screenshots 01  https://i.imgur.com/NIsWzOa.jpg

1) I have pulled the channels dock out so that both channels and layers are visible. A right click in the channels dock can duplicate one of them. In this case the green channel, and to make it easier to see, temporarily turned off the R and B channel visibility.

2) That gives a Green Channel Copy

3) The channel is a mask and can be edited just the same as any other layer. In this case turn the layer visibility off and the channel visibility on.  

4) Now, with the channel copy active, easy to edit, selection and bucket fill as the PS demo or just paint in corrections.

screenshots 02 https://i.imgur.com/iC1W9Rp.jpg

5) Edited might look like this

6) Now reverse those visibility settings, channel copy  off and image layer both active and visibility on.

screenshots 03  https://i.imgur.com/0Ep8GvT.jpg

7) Replacing the masked off area, add a layer, in this case a solid magenta

8) Layer -> Mask -> Add Layer Mask and select the channel option. If needed there is an Invert mask check-box (not required here)

9) Results in the masked area showing.


Awesome, thank you so much, with a minor issue with step #7, I was able to replicate it, thanks a lot for your time,explanation, and images!
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Messages In This Thread
RE: Please help me understand how to use a color channel as a mask - by Mapsking - 09-29-2021, 08:06 PM

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