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Thread: Inverting an image

  1. May 7th, 2002, 08:56 PM #1
    Brian
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    Inverting an image

    How do I invert an image, like the one in photoshop?
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  2. May 7th, 2002, 09:26 PM #2
    Zaei
    Guest
    1. Get the pixel color.
    2. Split it into its R, G, and B components.
    3. Convert back into a Color:
    Code:
    Dim c As Long
c = RGB(255 - R, 255 - G, 255 - B)
    4. Put the pixel back in its place.

    Z.
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  3. May 7th, 2002, 10:07 PM #3
    Sastraxi
    Sastraxi is offline
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    You could also turn it to HSB (aka. HSV/HSL) and invert it from there... heard it gives a better effect.
    All contents of the above post that aren't somebody elses are mine, not the property of some media corporation.
    (Just a heads-up)
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