 | | | Camera projections & elliptical filtering | Camera projections & elliptical filtering 2004-03-08 - By Harry Bardak
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hi bernard
Can you describe how you did your camera mapping ? Can help to solve your
problem.
There are some tricks to deal with cam proj..... so...
A bientot.
-- -- Original Message -- --
From: "kim aldis" <kim@(protected)>
To: <XSI@(protected)>
Sent: Monday, March 08, 2004 7:19 PM
Subject: RE: Camera projections & elliptical filtering
> There can be a problem where camera projections don't map well to polygons
> that are skewed to the view from the camera. The effect is a sort of
> triangulated breakup of the texture where no one triangle from a poly is
> projected the same as any other. The only solution is to make polys
smaller,
> usually by upping the subdivision or increasing NURBS step sizes.
>
> The other thing you could find is a softening of the texturing. Enough to
> show a difference if you're using a camera projection matched against liv
e
> action.
>
> > -- --Original Message-- --
> > From: owner-xsi@(protected)
> > [mailto:owner-xsi@(protected)] On Behalf Of Bernard Lebel
> > Sent: 08 March 2004 17:32
> > To: xsi@(protected)
> > Subject: Camera projections & elliptical filtering
> >
> > Hello,
> >
> > Has anyone had any problem with camera projections and
> > elliptical filtering?
> >
> > The texture folks here use camera projections most of the
> > time, and thye convert to pyramidal filtered .map files.
> > Now, since we have to use elliptical filtering to get good
> > results with pyramidal files, we get prettyweird artefacts. I
> > mean serious stuff, the kind that is not usable (the various
> > resolution textures blend awefully together).
> > Now after a reading of the mr docs, I begin to suspect that
> > it is related to camera projections, even though they are
> > generally frozen before rendering.
> >
> > Any help or pointer in the right direction would be quite wlecome.
> >
> >
> > Thanks
> > Bernard
> >
> >
> >
> > http://www.bernardlebel.com
> > http://www.xsimontreal.com
> > http://www.xsibase.com
> >
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>
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