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better 3D surfaces ?
- Subject: better 3D surfaces ?
- From: "Richard Tyc" <richt(at)sbrc.umanitoba.ca>
- Date: Mon, 20 Mar 2000 08:52:51 -0600
- Newsgroups: comp.lang.idl-pvwave
- Organization: The University of Manitoba
- Xref: news.doit.wisc.edu comp.lang.idl-pvwave:18959
I have been trying different methods for visualizing our MRI data in 3D and
I prefer 3D volume rendering although it is very CPU intensive. I have been
looking for a better shaded surface approximation of the data (2D slice data
, typically 256x256 and 5-25 slices).
I have been trying the SHADE_VOLUME procedure
oHeadSurf = OBJ_NEW('IDLgrPolygon', color=[100,100,100], reject=1, $
Shade_Volume, 3Ddata, 1, vertices, polygons, low=1
oHeadSurf->SetProperty, data=vertices, polygons=polygons
But I notice my volumes always look like extruded slices from each data set,
so in the z (or slice) direction, it is very "step like" with no
interpolation in this direction.
Is there a better way of showing 3D data created from individual slices
where the slice resolution is usually much less than the image resolution.
SBH Research Center