 | | | Camera projections & elliptical filtering | Camera projections & elliptical filtering 2004-03-09 - By Bernard Lebel
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Salut Harry,
Well nothing fancy. Not implicit ones, are the camera projections are used
for the texturing process and frozen afterward.
Anyway, it seems that the problem doesn't occur because of that (if you read
my other lenghty mail).
Thanks
Bernard
http://www.bernardlebel.com
http://www.xsimontreal.com
http://www.xsibase.com
>From: "Harry Bardak" <Harry@(protected)>
>Reply-To: XSI@(protected)
>To: <XSI@(protected)>
>Subject: Re: Camera projections & elliptical filtering
>Date: Mon, 8 Mar 2004 20:47:08 +0100
>
>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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