shadowdragonlord opened this issue on Apr 17, 2003 ยท 5 posts
shadowdragonlord posted Thu, 17 April 2003 at 8:51 PM
This may be a silly question, but I'm trying to run effects on an image, and would like to base the strength of the effect on a grayscale "Alpha Channel" image. Is this possible? Either with the layers OR with filters themselves? I think it's the same effect one might use to blend wireframe-to-rendered images, for modeling? I'm using Photoshop 5... Does anyone know how to do this?
antevark posted Thu, 17 April 2003 at 9:29 PM
i've got a lot running right now, so I can't open PS, but try selecting the alpha channel(ctrl/cmd-click on alpha?) then using the filter. If the selection's the opposite of what you want, then inverse selection(ctrl/cmd-shift-i)
shadowdragonlord posted Thu, 17 April 2003 at 10:48 PM
No no, it's not really the selection I was after, what I mean is that can I tell Photoshop to apply the given effect in different levels, based off of the 8-bit grayscale image? Does this make any sense...?
antevark posted Fri, 18 April 2003 at 1:07 AM
have you tried masking?
antevark posted Fri, 18 April 2003 at 1:08 AM
layer masking, that is.