On Tue, Oct 21, 2008 at 3:38 PM, Fabrice <[EMAIL PROTECTED]> wrote: > > this will not work cleanly. > if the image contains blue, it will alter the image creating the noise you > describe.
but he will not see that noise as long as noisy part of image will remain transparent, right > > so using same principle, replace in photoshop/editor the alpha channel by a > given color. tutorial please :) as far as I know, photoshop does not see png alpha as separate channel, instead you have three semi-transparent RGB channels there. > Avoid green, since jpg is most destructive in this color range. > preffer a red. source please :)