From: favre@seas.gwu.edu (Jean Favre)
Subject: Re: References to visualizing 2nd Order Tensors. . .
Organization: George Washington University
Date: Mon, 30 Nov 1992 14:46:00 GMT

>In article <1992Nov30.031005.27606@news.eng.convex.com>, gardner@convex.com writes:
>> Can anyone give me any pointers to references in the literature on the 
>> visualization of 2nd order tensors?  We have implemented an AVS 

You may also try the following paper:

@INPROCEEDINGS{Delm92,
   AUTHOR = "Thierry Delmarcelle and Lambertus Hesselink",
   TITLE = "Visualization of Second Order Tensor Fields and Matrix Data",
   BOOKTITLE = "Visualization'92",
   ORGANIZATION = "IEEE Computer Society",
   YEAR = 1992,
   MONTH = Oct,
   PAGES = "316--323"
   }

Hope this helps.


-- 
Jean M. Favre. EE&CS Dept. The George Washington University
		(202) 994 5917
		favre@seas.gwu.edu


From ken@pi1.arc.umn.edu  Tue Dec 22 07:10:46 1992
Received: from mail.unet.umn.edu by amelia.nas.nasa.gov (5.61/1.34)
	id AA26967; Tue, 22 Dec 92 07:10:46 -0800
Received: from a1.arc.umn.edu by mail.unet.umn.edu (5.65c/)
	id AA21077; Tue, 22 Dec 1992 09:10:38 -0600
Received: by a1.arc.umn.edu; Tue, 22 Dec 92 09:10:35 CST
Received: by pi1.arc.umn.edu (920330.SGI/920502.SGI)
	for @a1.arc.umn.edu:eugene@amelia.nas.nasa.gov id AA16499; Tue, 22 Dec 92 09:10:33 -0600
Date: Tue, 22 Dec 92 09:10:33 -0600
From: ken@pi1.arc.umn.edu (Ken Chin-Purcell)
Message-Id: <9212221510.AA16499@pi1.arc.umn.edu>
To: eugene@amelia.nas.nasa.gov (Eugene N. Miya)
Reply-To: ken@a1.arc.umn.edu
Subject: Re: [l/m 8/10/1992] Shell2 -- the outrigger	(2/4) c.g.v.FAQ2
Status: R


In article <1992Dec22.124511.23669@nas.nasa.gov>, you write:

|> 	"Feed me."
|> Systems

---------------------------------------------------------
GVLware Distribution:
        Bob  - An interactive volume renderer for the SGI
        Raz  - A disk based movie player for the SGI
        Icol - Motif color editor
---------------------------------------------------------

The Army High Performance Computing Research Center (AHPCRC) has been
developing a set of tools to work with large time dependent 2D and 3D
data sets.  In the Graphics and Visualization Lab (GVL) we are using
these tools along side standard packages, such as SGI Explorer and the
Utah Raster Toolkit, to render 3D volumes and create digital movies.
A couple of the more general purpose programs have been bundled into a
package called "GVLware".

GVLware, currently consisting of Bob, Raz and Icol, is now available
via ftp.  The most interesting program is probably Bob, an interactive
volume renderer for the SGI.  Raz streams raster images from disk to
an SGI screen, enabling movies larger than memory to be played.  Icol
is a color map editor that works with Bob and Raz.  Source and
pre-built binaries for IRIX 4.0.5 are included.

To acquire GVLware, anonymous ftp to:
        machine - ftp.arc.umn.edu
        file    - /pub/gvl.tar.Z

To use GVLware:
        mkdir gvl ; cd gvl
        zcat gvl.tar.Z | tar xvf -
        more README

Some Bob features:
        Motif interface, SGI GL rendering
        Renders 64 cubed data set in 0.1 to 1.0 seconds on a VGX
        Alpha Compositing and Maximum Value rendering, in perspective
            (only Maximum Value rendering on Personal Iris)
        Data must be a "Brick of Bytes", on a regularly spaced grid
        Animation, subvolumes, subsampling, stereo

Some Raz features:
        Motif interface, SGI GL rendering
        Loads files to a raw disk partition, then streams to screen
            (requires an empty disk partition to be set aside)
        Script interface available for movie sequences
        Can stream from memory, like NCSA XImage
        
Some Icol features:
        Motif interface
        Easy to create interpolated color maps between key points
        RGB, HSV and YUV color spaces, multiple file formats
        Communicates changes automatically to Bob and Raz
        Has been tested on SGI, Sun, DEC and Cray systems

BTW:    Bob  == Brick of Bytes
        Icol == Interpolated Color
        Raz  == ? (just a name)

Please send any comments to
        gvlware@ahpcrc.umn.edu

This software collection is supported by the Army Research Office
contract number DAALO3-89-C-0038 with the University of Minnesota Army
High Performance Computing Research Center.


Ken Chin-Purcell -- Graphics, AHPCRC, University of Minnesota
                    a.k.a. ken@ahpcrc.umn.edu and 612/626-8075
                    (and now back to Moose & Squirrel...)

Newsgroups: comp.graphics.visualization