I've seen that kind of behavior on Nurbs. If you are using a Nurb surface
try converting to polygons.
----- Original Message -----
From: "Chris Marshall" <chris(at)eclipsecreative.co.uk>
To: <XSI(at)Softimage.COM>
Sent: Thursday, March 16, 2006 1:31 AM
Subject: Re: displacement artifacts
> What about increasing the size of the images? Maybe doubling the size?
> Also, you know I'm going to say this, have you tried Parametric? Don't
> give up on it!
> Chris
>
>
> kim aldis wrote:
>
> >I wouldn't think so, there's only a small amount of height there -
re-ranged
> >to 0-0.08 from a full range image.
> >
> > _____
> >
> >From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf
Of
> >Michaël Bentitou
> >Sent: 15-March-2006 17:01
> >To: XSI(at)Softimage.COM
> >Subject: RE: displacement artifacts
> >
> >
> >Yeah it was just a shot in the dark, I know you know better than that Kim
> >;-) It can’t be something like not enough information in your Trans/disp
> >image like 8Bit/16bit issue, can it ?
> >
> >-=mb.
> >
> >
> >
> >-----Original Message-----
> >From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf
Of
> >kim aldis
> >Sent: Wednesday, March 15, 2006 11:28 AM
> >To: XSI(at)Softimage.COM
> >Subject: RE: displacement artifacts
> >
> >no, I tend not to do that. ;), but the level of detail is quite fine.
> >
> >
> >
> >
> > _____
> >
> >From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf
Of
> >Michaël Bentitou
> >Sent: 15-March-2006 15:30
> >To: XSI(at)Softimage.COM
> >Subject: RE: displacement artifacts
> >Could your objects be insanely small or large in terms of Softimage units
?
> >
> >-=mb.
> >
> >-----Original Message-----
> >From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf
Of
> >kim aldis
> >Sent: Wednesday, March 15, 2006 10:01 AM
> >To: xsi(at)Softimage.COM
> >Subject: displacement artifacts
> >
> >I'm using displacement maps in a way that requires a degree of accuracy.
I'm
> >making small, slightly raised lumps using a matte image to drive
> >transparency. For the displacement I'm using a slightly shrunk and
softened
> >- few pixels - version of the transparency map. This gives me a nice
rounded
> >edge to the raised, circular lumps. As you might guess, though, I'm
getting
> >some artifacts. Unusual ones, though. Slight pixelation around some of
the
> >rounded edges and little black marks on the inner areas; where you
wouldn't
> >expect them. upping the length doesn't help but increasing the subdee on
the
> >mesh - stupidly increasing - does. I'd rather not do this because it's
> >hitting the render times.
> >
> >has anyone seen this; any thoughts?
> >
> >cheers.
> >
> >
> >
> >
> >
> >
> >kim(at)aldis.org.uk
> >
> >
> >
> >
> >
>
>
>
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