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Info-Graphics Digest	Sun Feb  2 03:00:23 PST 1986

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Today's Topics:

  Info-graphics list
 Los Angeles SIGGRAPH Feb 11 1986 Meeting
 ISSCO graphics
 face animation
 clipping, windowing, viewing pyramid refs <1972 wanted
 large realistic 3-D databases wanted to test HSA

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  13:02:18 CST
Date:     01/27/86    13:37:56 EST
From: IF0310%SER.BITNET@WISCVM.WISC.EDU  (TOBY=BERK)
Subject:  Info-graphics list


Can I be added to the distribution list for Info-Graphics?
Thank you
(Please Reply)
   Toby Berk
   Florida International University
   IF0310@SER

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Date: Mon, 27 Jan 86 23:37:30 pst
From: jisdale@omnilax (Jerry Isdale)
Subject: Los Angeles SIGGRAPH Feb 11 1986 Meeting

	Los Angeles SIGGRAPH February Meeting Announcement

	Speaker: Steve E. Tice, 
		 Manager of Advanced Design Simulation Graphics

	Subject: Space Station Design at Rockwell International

	Date: 	Tuesday, Feb 11, 1986
		Refreshments: 	6:30 - 7:30pm
		Meeting:	7:30 - 9:30pm

	Location: Rockwell Downey Complex
		  Gate 53 (corner of Stewart and Grey)
		  12214 Lakewood Blvd.
		  Downey, Ca 90241

	Full mockups of a Space Station module, the Space Shuttle, the
	Orbitor, and the Apollo capsule will be open to attendees
	during the refreshment hour.

	Foreign Nationals must call the SIGPHONE by Monday Feb 3rd
	and leave the following information in order to attend:
	- Name
	- Who you represent (company or self)
	- Where you are from
	- Green Card Number (if available)

For Further Information:
	SIGPHONE: (213) 392-1074
		Los Angeles ACM/Special Interest Group on Computer GRAPics
		PO BOX 90698
		World Way Postal Center
		Los Angeles, CA 90009

	ARPA/CSNET: jisdale@omnilax
		Jerry Isdale
		Omnibus Computer Graphics


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  08:34:37 CST
Date: Thu, 30 Jan 86 08:26:45 CST
From: CCCRAIG%UMCVMB.BITNET@WISCVM.WISC.EDU  (Craig Pepmiller)
Subject: ISSCO graphics

  Hello, we are new to ISSCO Graphics.  Are there any ISSCO users out there who
would be interested in exchanging plot files, ISSCO helps and other related
info?  We are at the University of Missouri--Columbia and can be reached thru
Bitnet.  Please send replies by mail or reply to this digest.

Arpa address (?): CCCRAIG%UMCVMB@WISCVM.ARPA
Bitnet address:   CCCRAIG@UMCVMB

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From: Norm Badler <Badler%upenn.csnet@CSNET-RELAY.ARPA>
Subject: face animation
Date: Thu, 30 Jan 86 14:53 EST



There aren't too many general purpose facial animation systems. We have one
based on Ekman & Friesen's FACS system.  For further information contact

   PLATT%upenn@csnet-relay
or BADLER%upenn@csnet-relay .

Steve Platt just finished his PhD dissertation on that topic in Dec. '85.
He and I have submitted a paper on it SIGGRAPH '86.

Norm Badler

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From: wrf@ernie.berkeley.edu (W. Randolph Franklin)
Subject: clipping, windowing, viewing pyramid refs <1972 wanted
Date: 01 Feb 86 16:49:15 PST (Sat)

Papers or  technical  reports from   1971  or earlier on  CLIPPING  or
WINDOWING a 2-D or 3-D polygon with respect to a window or a TRUNCATED
VIEWING PYRAMID (i.e. 6 clipping planes) are wanted.

I am conducting a study into the history and priority  of those ideas,
i.e. who originally discovered them when, and so am interested in such
papers  from anywhere  in the world.   For   example, a 1970 technical
report from  Europe, on clipping with respect  to a truncated pyramid,
would be welcome, even  though the report  was  at the time ignored in
the USA.

A lot of graphics has been done either by industrial  people not under
"publish-or-perish"  pressure, or by students who  did not realize, at
that time, that what they did was original.  References to software or
hardware or products are also welcome.  If you did such work, and wish
a belated acknowledgement, please contact me.

Wm. Randolph Franklin, UC Berkeley,  
Arpanet: wrf@ernie.Berkeley.EDU
USPS: Computer Science Div., 543 Evans, University of California,
	  Berkeley CA, 94720, USA
415-642-9955

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From: wrf@ernie.berkeley.edu (W. Randolph Franklin)
Subject: large realistic 3-D databases wanted to test HSA
Date: 01 Feb 86 17:09:42 PST (Sat)


I  have a hidden  surface algorithm [1,2]  that performs very  fast on
randomly  generated input (e.g.  it took under 400  seconds on a Prime
500 to calculate the visible arcs from  10,000 random  spheres  packed
ten deep).  This algorithm calculates the visible arcs in object space
to the machine's arithmetic precision,  not  just  the  color of  each
pixel.  However, one objection to  the algorithm has  been that "real"
data might perform worse than random i.i.d data.

Therefore I would like to receive actual  2-D or 3-D graphic databases
with 10,000 to 100,000  edges in order to  statistically analyze them.
They need not be  current, and I will agree  to keep  confidential any
data that you   desire.  Please  contact me  before  actually  sending
anything.

Thank you.

[1] W.  R. Franklin, "A  Linear Time Exact  Hidden Surface Algorithm",
ACM Computer Graphics, vol. 14, no. 3, July  1980, pp.  117-123, (Pro-
ceedings of SIGGRAPH'80).

[2] -----, "An  Exact Hidden Sphere Algorithm That  Operates In Linear
Time",  Computer Graphics and Image Processing,  vol. 15, no. 4, April
1981, pp. 364-379.

Thanks.

Wm. Randolph Franklin, UC Berkeley,  
Arpanet: wrf@ernie.Berkeley.EDU
USPS: Computer Science Div., 543 Evans, University of California,
	  Berkeley CA, 94720, USA
415-642-9955



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