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the PhotoShop action to combine grayscale channels into RGB color.
Instructions for usage follow.
Figure 1 shows a Color_Combine
PhotoShop action, named Colour_compositeEx. This is an extension of the
ESA/ESO/NASA Colour_composite action that can be downloaded from their
I have simply added an action that automates the process and includes
Brightness/Contrast adjustments to each layer. To use the action, first
open the layers window with the F7 key. Now make a copy of your
grayscale blue image, rename it RGB and leave it as grayscale. Then
paste the green grayscale image onto the new RGB image and finally paste
the red grayscale image. You now have a grayscale image with two layers
and Layer 2 is active... see Figure 2.
Now you are ready to execute
the action to do the color combine. Under the Colour_compositeEx action
set, start the Color_Combine action. Answer "Don't Merge", if that
question comes up. Now you have color for each layer plus four
adjustments layers for each... see figure 3. After making any further
adjustments, all you have to do is flatten the image and paste it onto
The red, green and blue
functions can be individually executed. This is useful for doing a
bi-color image. Simply activate the desired layer and run the