Transferring a mask (alpha channel) from one image to another

Discussion in 'Photoshop Tutorials' started by Norm Dresner, Feb 19, 2008.

  1. Norm Dresner

    Norm Dresner Guest

    I had two Photoshop files which were both derived from the same original
    image. I had created a mask (alpha channel) in one that I wanted to use in
    the other. Since I couldn't find any "official procedure" for doing this,
    here's what I did:
    1. View Quick Mask in source file
    2. Select All and Copy.
    3. Paste new layer into destination file.
    4. Since the new layer is just a black and white image, I used Select
    Color to create a selection based on the white part
    5. Save Selection of mask in destination image
    6. Delete pasted layer, leaving just the original destination file with
    the new selection.

    Is there any easier way to do this???

    TIA
    ` Norm
     
    Norm Dresner, Feb 19, 2008
    #1
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  2. Norm Dresner

    ronviers Guest

    One possibility, but I'm not sure its any easier, would be:
    with both images open
    select the layer with the mask
    go to channels palette and shift-drag the channel to the other image
    load channel as selection and apply mask
     
    ronviers, Feb 19, 2008
    #2
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  3. Norm Dresner

    tacit Guest

    God yes.

    Open your Channels palette. Click on the alpha channel in the channels
    palette, hold down the mouse button, drag it to the second image. That's
    it!

    You can also click on it in the Channels palette, Select All, Copy, go
    to the new image, create a new cannel, Paste. Click-and-drag is easier.
     
    tacit, Feb 20, 2008
    #3
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