on 10/12/2002 4:56 pm, Lee Varis:
> > The radial blur filter always produces rough, noisy quality images - > even with the "best" render setting. I suspect that this is somewhat > intentional as otherwise the filter might tend to introduce severe > banding in the gradations it produces. The effect is sort of banded > anyway... > Quite right but I was quite surprised by the severity of the banding which appeared as extreem noise/pixelation. Can't say I have noticed it to that degree on the odd occaision that I have used it in the past, but maybe the image content just didn't show it as much. > You might be able to mitigate the noise somewhat by running a median > filter (after the radial blur) at a radius that just smooths out the > noise followed by a gaussian blur at 3-4 pixels. The radial blur is a > kind of special effect and noise is part of it anyway - it might be > easier to just introduce a level of noise over the whole image using an > overlay layer to unify the effect. > As said previously the answer to the problem was solved by simply adding the blur in two passes, one at 90% and then again at 10% ( or thereabouts ) which removed the unwanted pixelation caused by the first pass. Quite simple in the end and looked better than applying gaussian and noise selectively. Regards Sam =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
