Info-Volumizer Mailing List Archives: Re: lines in image

Re: lines in image

Chikai Ohazama (chikai@talula.engr.sgi.com)
Wed, 16 Jun 1999 11:35:34 -0700 (PDT)

This is an interpolation artifact, i.e. aliasing. One way of reducing the
line effects into increase the number of planes you use. Another way is
to "cap" the volume on each side with a polygon.

________________________________________________________________________
Chikai J. Ohazama, Ph.D. SGI
Member of Technical Staff 2011 N. Shoreline Blvd. ms 525
Advanced Graphics Division Mountain View, CA 94043.1389
                                     Telephone: (650) 933-6533
                                     FAX: (650) 964-8671

On Wed, 16 Jun 1999, Clara Chan wrote:

> Hi,
> I have just started using Volumizer. I modified the voglSimpleVolume.cxx
> file and others to read our dataset in NetCDF format.
> When I used a color table, I noticed these lines in the image when I
rotate.
> It gets worse when I'm looking staight on a side but OK when I'm at an
angle.
> I have included 2 images to show what happened.
> Can anyone tell me how to eliminate those lines?
> I'm using Onyx with 3D texture.
> Thank you.
> Clara
>

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