Changing a color to transparency

Discussion in 'Photoshop' started by ntg, Apr 22, 2006.

  1. ntg

    ntg Guest

    I have scanned a tusch drawing as line art, so I have the black
    drawing on a white background.
    Now, I want to make the background transparent and the black drawing
    Can someone help me (I am a newbie)
    ntg, Apr 22, 2006
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  2. ntg

    Wheeler Guest

    go to mode>duotone
    change ink to red
    to make transparency, doubleclick background layer to change name and make
    it editable
    add layer mask (bottem of layers pallet)
    use magic wand to select background
    Wheeler, Apr 22, 2006
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  3. ntg

    ntg Guest

    But I cannot change it to duotone (not active)
    And using magig wand is not possible, because there are hundreds of
    small islands of background color inside the drawing.
    ntg, Apr 22, 2006
  4. ntg

    Wheeler Guest

    what mode is the picture in?
    as far as the magic wand, if you uncheck the box at the top that says
    it should pick up all of those islands

    also, what version of ps are you using?
    if it makes any difference i am using ps7
    i was able to achieve the affect you asked for using a scanned pencil
    Wheeler, Apr 23, 2006
  5. ntg

    tacit Guest

    In order to change the image into duotone, it must first be grayscale.

    Don't use the magic wand to select colors. It's a crude tool only suited
    to newbies; as soon as oyu start to learn anything about Photoshop, you
    quickly abandon it. Instead, sample the white with the eyedropper, click
    on the Select menu, and use the Color Range command. This selects
    everything everywhere that is the same color as whatever you clicked on
    with the eyedropper.
    tacit, Apr 23, 2006
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