HDTenEightyP/NetNews huggingface dataset:
From: mww@eng.cam.ac.uk (Mark Wright)
Newsgroups: comp.graphics.visualization
Subject: Re: Visual Force
Date: 17 Nov 92 17:43:34 GMT
Organization: Cambridge University Engineering Department, UK

Hello,
      I lost the email address of Richard Gray of Edinburgh University
who was talking about Visual Force recently on this group. I hope I
can make contact by posting to this group.

In a recent mail message I said I couldn't see how the
Canny algorithm could be used for detecting curvature extrema
in range images, this was a misunderstanding.

In Ting-Jun Fan's book "Describing and recognising 3-D shapes using
surface Properties" (Springer-Verlag) the Canny is used to detect
discontinuities whereas a technique due to Saint-Marc and Medioni is
used to detect the curvature extrema.

One more point I would like to add is that it seems to me that
visual force is actually a concept that belongs to "Active Vision"
i.e. Systems which interact with a scene in real time such as a
stereo pair capable of moving to fixate on an object and track it.

Richard, I would still be interested in any references you have on this
subject or any ideas about you might like to discuss should you care
to reply by Email.

-------------------------------------------------------------
Mark Wright
Speech, Vision and Robotics Group
Cambridge University Engineering Department
Trumpington Street, Cambridge, England CB2 1PZ
Tel: +44-223-332754 Fax:+44-223-332662
EMail: mww@eng.cam.ac.uk
-------------------------------------------------------------
Newsgroups: comp.graphics.visualization
From: hsu@crl.dec.com (William Hsu)
Subject: Re: Low-cost 35mm digital film recorders (SUMMARY)
Organization: DEC Cambridge Research Lab
Date: Fri, 20 Nov 1992 13:51:32 GMT

In article <9211172056.AA08067@psi.rutgers.edu>, CDO@IB.RL.AC.UK (C D Osland) writes:
> On 13 Nov 92 16:06:44 GMT <davidas@ORG.MITRE.MBUNIX> said:
> 
> We have one attached to a Mac 900 and driven by Freedom of Press.
> We have had problems working out how to rotate PostScript images
> successfully - the manual mentions the ROTATE and OFFSET functions
> in FoP but after ROTATE, OFFSET moves the image in the wrong direction
> (for our images) and negative offsets are not allowed.  Anyone who has


We use Freedom of Press, too.  According to the manual, you can specify negative
offsets. Perhaps you have an older version. I think we are running V2.5, but I
believe our manual is for V2.2. Either get an updated version, or look at their
example on page 43 of the users guide (where they use negative offsets).

William
From: hsu@crl.dec.com (William Hsu)
Newsgroups: comp.graphics.visualization
Subject: Re: Visualization '92 conference
Date: 23 Nov 92 15:09:46 GMT
Distribution: usa
Organization: DEC Cambridge Research Lab

IEEE sponsored Vis '92.
Here's info that should enable you to ordering the proceedings:

Vis '92 proceedings. Published by the IEEE Computer Society Press
10662 Los Vaqueros Circle
PO Box 3014
Los Alamitos, CA 90720-1264

IEEE Compter Society Press Order Number 2897
Library of Congress Number 92-73400
IEEE Catalog Number 92CH3201-1
ISBN 0-8186-2897-9

William
Newsgroups: comp.graphics.visualization
From: collins@eol.ists.ca (Mike Collins)
Subject: Re: Visual Force Detection in Landscape
Organization: Earth Observations Laboratory, ISTS
Date: Tue, 17 Nov 92 00:58:29 GMT

In article <28047@castle.ed.ac.uk> airdg@castle.ed.ac.uk (Richard Grey) writes:
>I hope this is the right place to post, and that somebody out there may
>be able to help me, (no matter what small a way !).
>
>The following is an introduction to a project I am undertaking for the
>Forestry Commission here in Scotland :
>
>Abstract
>--------
>                The production of an automatic system   
>                capable of identifying the visual force
>                aspects of landscape using contour data.
>
>Description
>-----------
>        Visual force is a principle which is embodied in art,
>graphic design, and architecture.  The eye and mind respond to visual
>force in a predictable and dynamic way.  The visual forces in landform
>draw the eye down convex slopes and up concave ones, the strength of
>the force depending on the scale and irregularity of the landform.

>Cheers.
>
>Richard.

this may seem like a stupid question, but
what is the relationship between visual force/saliency and trees?

mjc

-- 
michael collins
institute for space and terrestrial science
toronto, canada M3J 3K1
collins@eol.ists.ca
From: airdg@castle.ed.ac.uk (Richard Grey)
Newsgroups: comp.graphics.visualization
Subject: Re: Visual Force Detection in Landscape
Date: 17 Nov 92 10:02:02 GMT
Organization: Edinburgh University

In article <1992Nov17.005829.3671@ists.ists.ca> collins@eol.ists.ca (Mike Collins) writes:

>this may seem like a stupid question, but
>what is the relationship between visual force/saliency and trees?
>
>mjc
>
>-- 
>michael collins
>institute for space and terrestrial science
>toronto, canada M3J 3K1
>collins@eol.ists.ca


        Actually, it is so the landscape architects don't
        disrupt the natural looking balance of the landform
        when they go splashing their seeds all over the place.

        They don't just shove a few trees in the ground and
        hope that it looks nice !

Richard.
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

                         airdg@castle.ed.ac.uk
          _______   __   ______   __   __   _______   _______   _______
         / ___  /  / /  / ____/  / /  / /  / ___  /  / ___  /  / ___  /
        / /__/_/  / /  / /      / /--/ /  / /__/ /  / /__/_/  / /  / /
       / /\ \    / /  / /___   / /--/ /  / /--/ /  / /\ \    / /__/ /
      /_/  \_\  /_/  /_____/  /_/  /_/  /_/  /_/  /_/  \_\  /______/

        { Edinburgh University Dept. of Artificial Intelligence }
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
From: avr@cs.purdue.edu (Andrew V. Royappa)
Newsgroups: comp.graphics.visualization
Subject: Visualization '92 conference
Date: 21 Nov 1992 10:44:29 -0500
Organization: Department of Computer Sciences, Purdue University
Distribution: usa
NNTP-Posting-Host: dionysus.cs.purdue.edu


Hi there. I'm sorry this question is somewhat vague: does anyone know
which organization holds the "Visualization '92" conference ? I believe
it is being held in Boston around this time. I would like to order 
their proceedings. If you think you know what I mean, I'd appreciate
some help. Otherwise, I can try to find out more specifics from the
person who asked me this information. Again, sorry to be so vague.

			Thanks in advance,

					Andrew V. Royappa
					Purdue University
					avr@purdue.edu
					{decvax,ucbvax,pur-ee}!purdue!avr
Newsgroups: comp.graphics.visualization
From: adam@Erc.MsState.Edu (Adam Gaither)
Subject: Research positions offered
Organization: /frog-home/adam/.organization
Date: Sat, 21 Nov 1992 23:27:28 GMT
Distribution: comp.graphics.visualization
X-Posted-From: frog.erc.msstate.edu
NNTP-Posting-Host: sol.ctr.columbia.edu


Job announcement:  Research Positions

Mississippi State University invites applicants for three Research 
Assistant (non-tenure) positions in its NSF Engineering Research Center 
for Computational Field Simulation.  The goal of the Center is to advance 
the state of the art in large-scale computational simulations on geometrically-
complex  physical field problems, and to transfer these technologies to 
industry.  The following positions are currently available at the Research 
Assistant I or II level:

    Scientific Visualization:  Responsibilities include developing new
        scientific visualization methods and paradigms, such as vector field 
        visualization and concurrent visualization of field simulation 
        results.  An MS is required. 

    Computer Graphics:  Responsibilities include development, instruction, 
        support, and maintenance of interactive graphics software for internal 
        and external users.  Knowledge of X/Motif and GL is required.  A BS is 
        require, MS preferred.

    Programmer:  Responsibilities include development, maintenance and support 
        of general software systems.  A strong background in software 
        engineering, complex data-structures, algorithms, and C is preferred.  
        A BS is required.

Demonstrated ability and experience in programming and testing on high-
performance graphics workstations in C and UNIX is required, and a working 
knowledge of FORTRAN is preferred.  Travel may be required in each position.  
Salary is competitive and commensurate with degree and experience.  The Center 
also offers the opportunity for further graduate study  in computational 
engineering, computer engineering, computer science, and various traditional 
engineering studies.

Interested persons should submit a complete resume, including details of 
relevant interests, expertise, and experience, along with names and addresses 
of three references to

    Dr. Joe F. Thompson, Director
    NSF Engineering Research Center for Computational Field Simulation
    P.O. Box 6176
    Mississippi State, MS  39762

Applications will be accepted until December 31, 1992 and continually 
thereafter until positions are filled.  MSU is an affirmative action, equal 
opportunity employer.  Women and minorities are encouraged to apply.
From: dwight@geohub.gcn.uoknor.edu (Dwight D. Moore)
Newsgroups: comp.graphics.visualization
Subject: Most recent TIFF doc and CCITT G3/4 doc
Date: 18 Nov 92 15:21:37 GMT
Article-I.D.: constell.Bxx403.Cor
Reply-To: dwight@geohub.gcn.uoknor.edu
Organization: Geosciences Computing Network, Univ. of Oklahoma
Originator: usenet@kittyhawk.ecn.uoknor.edu

Does anyone have a online copy of the most recent TIFF doc
and any docs for CCITT Group 3/4 fax compression format?
(code for the latter is welcome also)
Thanks in advance.
----------------------------------------------------------------------------
Dwight D. Moore
Geosciences Computing Network
University of Oklahoma

dwight@geohub.gcn.uoknor.edu (129.15.40.10)
These opinions do not necessarily represent the opinions of OU or the GCN.
----------------------------------------------------------------------------
Newsgroups: comp.graphics.visualization
From: Eva Cheung <eva-cheung@cuhk.hk>
Subject: Axum 2.0 from TriMetrix
Organization: The Chinese University of Hong Kong
X-Useragent: Nuntius v1.1
Date: Sat, 21 Nov 1992 03:04:07 GMT

Dose anyone use Axum before?  I want to know how it works and what it can
do.   Thanks.
Newsgroups: comp.graphics
From: hirsch@pioneer.arc.nasa.gov (Bob Hirsch)
Subject: CGM standard, how to obtain
Organization: NASA Ames Res. Ctr. Mtn Vw CA 94035
Distribution: usa
Date: Tue, 17 Nov 1992 19:10:24 GMT

As a followup to a recent thread on the CGM (Computer Graphics Metafile)
standard:

It is now ISO/IEC 8632-1 (1992), previously ANSI X3.122 - 1986.  The
content is the same.

Order from 
	American National Standards Institute
	11 W. 42nd St.
	New York, NY 10036
	212/642-4900

The document costs $145.00.

Bob Hirsch - Sterling Software - NASA Ames Research Center
hirsch@ames.arc.nasa.gov         Mail Stop 233-3
415/604-4807                     Moffett Field, CA 94035-1000
**The preceding has been an opinion by a concerned citizen**
From: eclark@gauss.math.usf.edu. (Edwin Clark)
Newsgroups: comp.graphics
Subject: periodic planar patterns
Date: 15 Nov 92 17:20:35 GMT
Organization: Univ. of South Florida, Math Department


I am looking for a program to generate periodic planar patterns
The input would be the name of one of the 17 discrete symmetry
groups on the plane and a pattern for a fundamental region.
The output would be the extension of this pattern to the entire
plane (or a portion thereof).

If anyone knows of the existence of such a program --- or something
similar -- I would appreciate an email message giving whatever
information you might have.

Thanks,

W. Edwin Clark
eclark@math.usf.edu

--
W. Edwin Clark
Mathematics Department
University of South Florida
Tampa, FL 33620-5700
From: del@hpfcso.FC.HP.COM (David Larson)
Date: Fri, 20 Nov 1992 19:00:07 GMT
Subject: Re: CGM standard, how to obtain
Organization: Hewlett-Packard, Fort Collins, CO, USA
Newsgroups: comp.graphics

Regarding the document numbers for CGM--

CGM is a multi-part standard -- there are several "parts", each covering
a different area.  The parts are designmated by the "dash" number.
ISO/IEC 8632-1 is part 1, ISO/IEC 8632-2 is part 2.

The topics are:
	part 1: CGM Functional Specification (332 pages)
	part 2: Character Encoding (88 pages)
	part 3: Binary Encoding (72 pages)
	part 4: Clear Text Encoding (56 pages)

Part 1 gives the "what" (the semantics) and the other parts give the "how"
(the syntax).  You would probably want part 1 and at least 1 of the other
parts to generate and interpret a conforming CGM.

Dave Larson

	
Newsgroups: comp.graphics
From: scollins@cs.tcd.ie (Steven Collins)
Subject: Re: What's a package with well done tick (scale) marks?
Organization: Trinity College, Dublin (Computer Science)
Date: Thu, 19 Nov 1992 13:59:30 GMT

In article <1992Nov18.154727.4235@ra.msstate.edu> borchert@walt.CS.MsState.Edu (Chris Borchert) writes:
>
>I have looked at xfig, but it doesn't work well.  Any other I can try?
>What other big graphics packages using scaling?
>

I've used tgif and found it to be very good indeed.  Its flexible, has
a reasonable interface and with a little work you can do things like
read in postscript images and draw over them and stuff (you do need
ghostscript to do this though).  The only drawback is the lack of a 
decent rotate option.  Angles of multiples of 90 only are allowed.  This
aside it is a very useful package to have around.

Steven Collins
scollins@cs.tcd.ie

Newsgroups: comp.graphics
From: feuling@astroatc.uucp (Lindsay Feuling)
Subject: Postscript code to draw a Treble Clef
Organization: Astronautics Technology Cntr, Madison, WI
Distribution: na
Date: Fri, 20 Nov 1992 17:41:27 GMT

I'm looking for some postscript code to draw a nice Treble Clef.  If anyone
out there has some, I would appreciate it you would mail it to me.

Thanks in advance.
From: u438813@imux120.ncu.edu.tw (Lin Wei-Ting)
Newsgroups: comp.graphics
Subject: Fill a closed region.
Date: 18 Nov 92 05:53:38 GMT
Reply-To: u438813@imux120.ncu.edu.tw
Organization: Sun Microsystems, Inc.

I want to find an algorithm to fill a closed region.
Thanks.
Newsgroups: comp.graphics
From: rccarm00@nx19.mik.uky.edu (ron c carman)
Subject: Why do images pixellate when enlarged?
Organization: University Of Kentucky, Dept. of Math Sciences
X-Path: nx19.mik.uky.edu!rccarm00
Date: Tue, 24 Nov 1992 02:49:45 GMT

   I'm curious as to the reasons why an image will pixellate
when enlarged/zoomed-in-on.  How can the government capture
an image from space via satellite and be able to zoom in
to clearly reveal people etc?... 
   I guess the real question is: What factors limit how
much an image can be enlarged without pixellation?
   Thanx.

RC Carman

--
/=======================================================================\ 
|     Ron C. Carman          ||  Quantum physicists get all the girls.  |
| rccarm00@mik.uky.edu       ||  Al.  Is he live, or is he a hologram?  | 
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Newsgroups: comp.graphics
From: dmh4536@usl.edu (Halverson Dann M)
Subject: Image Lab
Organization: University of Southwestern Louisiana
Date: Mon, 16 Nov 1992 17:31:40 GMT
From: src@jet.uk (Stephen R Cooper)
Newsgroups: comp.graphics
Subject: HELP: Information needed on open version of SGL
Summary: Information needed on Silicon Graphics Library (open version) for Sun
Date: 17 Nov 92 09:54:32 GMT
Organization: Joint European Torus


BACKGROUND: The Joint European Torus is a major nuclear fusion research project
investigating the feasability of a toroidal, magnetically confinement plasma as
a future energy source. One of the key elemenents in the control of this plasma
is the prediction of the plasma boundary and magnetic field lines confining the
plasma. We currently have a predictive tool which uses the SGL to visualise the
coil currents, plasma boundary and magnetic field lines. 

PROBLEM: Our plan was to run the tool as a stand alone product on an R4000 IRIS
Indigo XS connected to the main Sun network via an ethernet to communicate some
simple information between the two systems. What we would like, is to integrate
the product properly into the control system, but for this we would need to run
the code on a Sun machine. 

QUESTION:  We have heard rumours that SGL has been released as an open product.
If this is correct is is avbailable yet or in the near future for the Sun? and
if it is what other products are we likely to need (ie graphics cards etc.) to
get a Sparc 10 or some other Sun machine to run our predictive code?

HELP:

	1) Does anyone know if SGL will be available for the Sun

	2) Does anyone know who to contact for further information

	3) Does anyone have any experience of running SGL on a Sun


If you can answer or help with any of this please Email me src@jet.uk, I
would rather be swamped with information even if its only hints of where
to go to find out more information. I'll be happy to pass on anything I
find out if anyone else is interested, as long as I have something to pass
on.

	Thanks in advance	Stephen R Cooper
				Physics Operations Group
				Operations Division
				JET Joint Undertaking
				
				Email:	src@jet.uk



- Disclaimer: Please note that the above is a personal view and should not 
  be construed as an official comment from the JET project.
Newsgroups: comp.graphics
From: clane@csws2.ic.sunysb.edu ()
Subject: Help with povray
Originator: clane@csws2.ic.sunysb.edu
Organization: State University of New York at Stony Brook
Date: Mon, 23 Nov 1992 19:57:13 GMT

	Can anyone tell me why POVRAY is telling me that
 # and / are "offending characters"?  When I try to run povray
it gives this error after reading the very first line of the
.POV file where I have:

     #include "shapes.inc"
     #include "colors.inc"
     etc...

I deleted all includes from the top of the file and then the
first few lines of the file were comments with // before it.  That's
when I got another offending character error for "/".

	I am using povray in HP-UX from an executable I compiled
with the C source.  (Thanks to those who replied my message for help
compiling it, by the way).
-- 
                          | "So who is this Al Gorithm guy they keep
Charles F. Lane           |  mentioning in my Computer Science classes?"
clane@Libws1.ic.sunysb.edu|
Newsgroups: comp.graphics
From: kaufman@eecs.nwu.edu (Michael L. Kaufman)
Subject: Re: FREE RenderMan fod PC's!!!!
Organization: EECS Department, Northwestern University
Date: Wed, 18 Nov 1992 02:40:11 GMT

In article <721677738.24200@minster.york.ac.uk> mh-b@minster.york.ac.uk writes:
>Do you want a FREE copy of RenderMan for a PC base? Well so do I, so if you 
>come across one let me know! BUT, now that I've got youe attention I'd like 
>some info on a particular topic :

Is it just me, or does everyone ignore posts that play games like this?

Michael

-- 
Michael Kaufman | I've seen things you people wouldn't believe. Attack ships on
 kaufman        | fire off the shoulder of Orion. I watched C-beams glitter in
  @eecs.nwu.edu | the dark near the Tannhauser gate. All those moments will be
                | lost in time - like tears in rain. Time to die.     Roy Batty
From: nyet@cco.caltech.edu (n liu)
Newsgroups: comp.graphics
Subject: Re: VIVID raytracer ? teapot .vo data available by ftp
Date: 16 Nov 1992 07:06:59 GMT
Organization: California Institute of Technology, Pasadena
NNTP-Posting-Host: punisher.caltech.edu

I finally got around to generating that patch database of a teapot.
It is pretty big (but it has surface normals!! :-) ~250k compressed,
half a meg uncompressed.

Check at cco.caltech.edu
/pub/nyet/graphics

I also uploaded a tpool.v file... just a modified pool.v that plops
the teapot on the pool table.

They may not work together (I haven't tested it yet) since I don't know
if I generated the .vo file the same way when I made the tpool.v file.

I would have uploaded Jim Blinn's original bezier curve def of the tpot,
but I accidentally nuked it off one of my unix accounts (I do have it
on my pc somewhere). Let me know if there is interest in this original
version (slightly hacked to make the top fit and add in a base).

Also there is a polygon database of a vw beetle. The format is kinda
obscure, but if you have some of Blinn's old graphics pipeline writings
(does the blobby man ring a bell?) you might understand it better.
-- 
nyet@cco.caltech.edu
From: smolen@vixvax.mgi.com
Newsgroups: comp.graphics
Subject: 3D mapping software needed.
Date: 23 Nov 92 17:00:25 GMT
Organization: Management Graphics, Inc.



Hello Netters:

I am in need of some relatively simple software that can take X, Y AND Z
coordinates and output a simulated surface.  If anyone knows of such a beast
I would like to know where to locate it.  Shareware is interesting, however,
I believe a budget exists for purchasing it.

The platform of choice for this software is Mac or PC.

Software like Wavefront, Alias, TDI is not an option unfortunately.

Thanks in advance!  I will post a summary if requested.

Please reply to:  smolen@vixvax.mgi.com

Mark...
From: jonathan@rahul.net (Jonathan Heiliger)
Newsgroups: comp.graphics
Subject: Re: POV in Silicon Graphics workstations
Date: 19 Nov 92 21:20:18 GMT
Organization: a2i network

In article <toepfer.722149326@du9ds4> toepfer@du9ds4.fb9dv.uni-duisburg.de 
(Hansjoerg Toepfer) writes:

>I compiled POV on an INDIGO with very little problems.
>Only thing I remember was to comment out matherr stuff in xwindows.c .
>It just works great on such a fast machine.

   Would it be possible for you to send your compiled SGI version to 
'rahul.net' specifically in the '/pub/jonathan/incoming' directory?
                 Thanks.



 
-- 
Jonathan Heiliger ........ Electric Power Research Institute
Internet: -/- jonathan@rahul.net -/- flix@mecca.epri.com -/-
Telephone <*> (415) 855-2888
Newsgroups: comp.graphics
From: yang@mtu.edu (WHY aKs WHY)
Subject: Re: Image processing, sharpen, calibrate, dither, contrast.....
Organization: Michigan Technological University
Date: Wed, 18 Nov 1992 18:15:42 GMT

> Hi:
>     I am doing a image processing project right now, I have to manipulate some
> functions to a scanned picture. like sharpen, calibrate, dither, contrast.....,
> Could someone give me some directions how to find the infos?
>     I need to know the theory and how to implement it, of course, any source
> codes will be appreciated
> 
> 
         

      ME TOO, Please send me directions how to find the infos!

      thanks in advance!

      xy
Newsgroups: osu.graphics,comp.graphics
From: ctornow@magnus.acs.ohio-state.edu (Carina E Tornow)
Subject: Convert DesignCAD to PCX or TIFF
Organization: The Ohio State University
Distribution: usa
Date: Sat, 21 Nov 1992 23:46:30 GMT


    I need help.  My advisor wants me to find a program that can convert 
DesignCAD output files into PCX or TIFF bitmapped graphics form, so he can 
insert the graphics into his word processor.  DesignCAD's output files can be 
of the format IGES, GEM, DXF, and a few others.  I need the names and if 
possible the prices of programs that can do this conversion.

     If anyone can help me, please send me the information to my e-mail 
address.
     Thanks,
        Carina
        ctornow@magnus.acs.ohio-state.edu
Newsgroups: comp.graphics
From: wangc@cpsc.UCalgary.ca (Carol Wang)
Subject: projecting text onto a plane
Organization: The University of Calgary
Distribution: comp
Date: Mon, 16 Nov 1992 21:52:58 GMT

i am looking for an ftp site (or other source of free software) with a
program that can display and scroll text on a random plane for
inclusion in a rendered 3D scene.  this is just for "artistic touches"
(simulate a computer screen with scrolling text) in an animation i
want to make.  i will be using either RenderMan or RayShade for
rendering if that makes a difference.  likely anything that produces
polygons would be great.

any help/leads/software! 8-)  would be greatly appreciated.

carol (wangc@cpsc.ucalgary.ca)