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Re: alpha doubts

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Re: alpha doubts
by Darby Edelen on May 16, 2008 at 11:43:16 pm

I would recommend making your footage into a grayscale matte that you could use as a luma matte. In this case white is entirely opaque, black is entirely transparent and the grays in between are semi-transparent.

You could do this by applying a Channel > Invert effect to make your white background black, then using a Color Correction > Levels effect to bring the lighter portions of the image that you want fully opaque into the white range. If there are colors in the image you don't want for the matte, use a Color Correction > Tint effect.

Darby Edelen
Lead Designer
Left Coast Digital
Santa Cruz, CA


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Current Message Thread:
  • alpha doubts by manuelito limon on May 15, 2008 at 10:14:25 pm
    • Re: alpha doubts by Joey Foreman on May 15, 2008 at 10:39:54 pm
    • Re: alpha doubts by Darby Edelen on May 16, 2008 at 11:43:16 pm



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