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Path: utzoo!watmath!clyde!burl!ulysses!ucbvax!aids-unix.arpa!Info-Graphics-Request
From: Info-Graphics-Request@AIDS-UNIX.ARPA (Info-Graphics moderator Andy Croma
Newsgroups: net.graphics
Subject: Info-Graphics Digest
Message-ID: <8509180101.AA07302@UCB-VAX.ARPA>
Date: Sun, 15-Sep-85 06:00:54 EDT
Article-I.D.: UCB-VAX.8509180101.AA07302
Posted: Sun Sep 15 06:00:54 1985
Date-Received: Fri, 20-Sep-85 04:08:28 EDT
Sender: daemon@ucbvax.ARPA
Reply-To: Info-Graphics@AIDS-Unix
Organization: The ARPA Internet
Lines: 527

Info-Graphics Digest	Sun Sep 15 03:00:54 PDT 1985

 - Send submissions to Info-Graphics@AIDS-Unix
 - Send requests for list membership to Info-Graphics-Request@AIDS-Unix

Today's Topics:

 Info-Graphics / net.graphics
 Re: Wanded: Video Overlay Device for IBM PC/VCR
 Re: Wanded: Video Overlay Device for IBM PC/VCR
 Old post
 Impress to PostScript converter wanted
 Re: Info-Graphics Digest
 Re: Object Descriptions Wanted
 Tandy 2000 MS-dos Pascal
 RE: computer vision newsgroup
 Bay Area SIGGRAPH
 Hitachi 63484 Graphics Controller
 fractal dragon
 PC/AT as graphics-oriented support environment
 New to Newsgroups...
 Foreign Language Technical Material
 GKS for UNIX 4.2
 paper topics
 Need information on a graphics tablet

----------------------------------------------------------------------

Date: Mon, 9 Sep 85 08:44:55 edt
From: Kelly Booth 
Subject: Info-Graphics / net.graphics

Today I read a rather long entry in net.graphics posted by you containing the
Info-Graphics Digest dated Sun Sep 8.  Most of the items had previously been
posted to net.graphics.  Is there a reason for repeating these postings?

I am not a regular ARPA user and don't know the history behind Info-Graphics.
While visiting UC Santa Cruz on sabbatical I was added to the distribution
list because they did not have access to net.graphics.  At that time I found
that there was essentially no overlap between the two.  Now that I have
returned to Waterloo (and thus get net.graphics again), it is disconcerting
to find the duplication that now seems to pervade.  Is there a rationale
behind this?

If there is a valid reason for posting items twice, I suggest that the postings
be split into postings containing entirely disjoint material and those
containing entirely repetitious material.  The header should then make this
distinction.  Those of us who get net.graphics could then skip the latter
articles but read the former.


------------------------------

Date: 9 Sep 85 12:38:32 GMT
From: decvax!mcnc!unccvax!dsi@Berkeley  (Dataspan Inc)
Organization: UNC-Charlotte
Subject: Re: Wanded: Video Overlay Device for IBM PC/VCR
References: <127@butler.UUCP>
Errors-To: usenet-admin@Berkeley

     You probably didn't want to hear this, but there just isn't any
way to do this cheaply, if at all.  Sounds like you need a frame store
time base corrector (I take it that you want to take SCH phased colour
video from a camera, colour video from another VCR, and use your PC as
the poor man's Chyron or Vidifont character generator.
     Real character generators used for television are "genlocked" to
the station's master sync generator. The timing requirements of this
are nontrivial (i.e. you must synchronize the colour subcarrier within
a few nanoseconds). Thus, with the other video locked, and the character
generator locked, you can then algebraically add the video from the
character generator to whatever video you already have (also locked).
     The reason you need a frame store TBC is that there is probably
no way to send "advanced" vertical sync back to your IBM-PC. (There are
"line store TBC's" which maintain a correction window of + or - so
many lines). You would also have to convert the RGB outputs of your
PC to NTSC (if this isn't done already) and your TBC would have to
have the "pre heterodyning" option to force the colour subcarrier to
be in a precise relationship with the horizontal sync.
     You also need a TBC for your video tape recorder, unless the
video coming from your PC is of reference stability. All kinds of
factors enter into time base instability of helical scan VTR's, such
as varying "stiction" around the headwheel, runout in the headwheel
capstan and pinchroller, varying tension in the takeup spool due to 
the ever-changing tape pack size, relative humidity, etc. Although
the video from your VCR ** looks ** stable, it in reality is very
disgustingly changing frequency and so on. (To see how bad, get 
two TV station video sources, display one, and superimpose the other
with a resistive matrix. You will see the other station's image but
most likely, the syncrhonizing pulses will "cross" over the other
station's image. Then, try this with a VCR and a TV station, and
notice how much the sync pulses "slew". In the two TV station case,
the sync is so stable, the drifting might gain one line per 15 minutes!!)
     If you'd like to build a TBC, you'll need to build some really
macho dual ported RAM, and a system for writing in dirty video (using
a clock recovered from the VCR colour burst) and writing out clean
video (using a clock recovered from some reference source). You also
need some way of forcing all the incoming TBC video sources to be
SC-H phased because the output certainly will be!  And, if you only
build two field storage, you'll have to break out the delay lines
and analog switches to maintain the NTSC four field sequence.
     Finally, the colour video coming from a PC is flat to at least 8 mHz
even at NTSC rates (one of those cases where horizontal resolution can
exceed vertical resolution); colour response of VCR's is not given, 
but I can assure you that home VCR's have very poor colour response
past 0.3 to 0.5 mHz. (The detail of an NTSC image is always transmitted
in monochrome. In the best of all ideal worlds, the I-channel of colour
might get to 1.5 mHz). Your VCR also combs and cores the living s**t
out of the video because colour-under systems are notorious for crosstalk
between chrominance and luminance.
     Your question wasn't silly at all, though. I can see consumer TBC's
being available within 4-7 years so that video freaks can mix two or
more nonsynchronous sources. Then, the home video freak can do wipes,
dissolves, digital video effects (!) right from his own little TBC. Right
now, though, the Tektronix TBC (which is obstensibly the best) costs 
$12,600 - this was last summer, when they had a big sale on them after
the Olympics) and is probably $ 18k new. The Intermetall people have totally
missed their market with digital TV chips - we NEED a TBC chip set, not
a TV receiver chip set !
    (And goollyeee gee, standards converters by the time I'm 40? Phew!)
David Anthony
DataSpan, Inc (The Southeast's largest consumer of TRW a/d flash converters!)

------------------------------

Date: 9 Sep 85 19:39:18 GMT
From: harpo!whuxlm!spuxll!kitc!les@Berkeley  (Les Johnson)
Organization: AT&T-IS Labs, So. Plainfield NJ
Subject: Re: Wanded: Video Overlay Device for IBM PC/VCR
References: <127@butler.UUCP>
Errors-To: usenet-admin@Berkeley

In article <127@butler.UUCP> olivier@butler.UUCP (Charles Olivier) writes:
>Does anybody know of any cheap method of doing video overlay with
>an IBM PC.  I have an IBM PC and a VCR, and I would like to over
>text (& graphics data from my pc). Can this be done cheaply?
The Image Capture Board from Electronic Photography and Image Center
(EPIC) at AT&T Consumer Products should be able to do this at a
reasonable cost.  Contact Alan Wlasuk at 317-352-6124 for more info.
Les Johnson @ ihnp4!kitc!les

------------------------------

Date: 9 Sep 85 17:22:29 GMT
From: decvax!genrad!panda!talcott!harvard!seismo!rochester!cmu-cs-pt!cmu-cs-h!rfb@Berkeley  (Rick Busdiecker)
Organization: Carnegie-Mellon University, CS/RI
Subject: Old post
Errors-To: usenet-admin@Berkeley

Could someone who has a copy the posts by Ken Turkowski of Frank Crow's Image
Generation Environment (December 1983), please either repost it (to
net.sources) or mail me a copy?  CMU didn't read the netnews in 1983.
				Rick Busdiecker
				rfb@h.cs.cmu.edu
				cmu-cs-pt!cmu-cs-h!rfb

------------------------------

Date: 9 Sep 85 19:39:27 GMT
From: decvax!genrad!panda!talcott!harvard!seismo!ut-sally!ut-ngp!patricia@Berkeley  (Patricia Thompson)
Organization: UTexas Computation Center, Austin, Texas
Subject: Impress to PostScript converter wanted
Errors-To: usenet-admin@Berkeley

Does anyone out there have or know of a means of converting
impress print files to PostScript?  Please reply by mail.
Thanks,
Patricia Thompson
Patricia Thompson, U.T. Computation Center, Austin, Texas 78712
ARPA:  patricia@ngp.UTEXAS.EDU
UUCP:  ihnp4!ut-ngp!patricia  allegra!ut-ngp!patricia  gatech!ut-ngp!patricia
       seismo!ut-sally!patricia  harvard!ut-sally!patricia

------------------------------

Date: 10 Sep 85 01:19:34 GMT
From: decwrl!turtlevax!ken@Berkeley  (Ken Turkowski)
Organization: CADLINC, Inc. @ Menlo Park, CA
Subject: Re: Info-Graphics Digest
References: <8509081904.AA11574@UCB-VAX.ARPA>
Errors-To: usenet-admin@Berkeley

In article <8509081904.AA11574@UCB-VAX.ARPA> Info-Graphics@AIDS-Unix writes:
... 
Do we really need to see these articles twice?  Once in net.graphics
and once again from the ARPA mailing list?  Only 2 (11%) out of the 18
articles were supposedly generated on ARPANET sites, while the other 16
(89%) were generated on USENET.
Net.graphics has been running pretty much autonomously without info-
graphics.  Why does info-graphics now need to be gatewayed back to us?
-- 
Ken Turkowski @ CADLINC, Menlo Park, CA
UUCP: {amd,decwrl,hplabs,seismo,spar}!turtlevax!ken
ARPA: turtlevax!ken@DECWRL.ARPA

------------------------------

Date: 10 Sep 85 16:59:24 GMT
From: decwrl!turtlevax!ken@Berkeley  (Ken Turkowski)
Organization: CADLINC, Inc. @ Menlo Park, CA
Subject: Re: Object Descriptions Wanted
References: <1074@sdcsvax.UUCP>, <302@gcc-bill.ARPA>, <285@uwvax.UUCP>
Errors-To: usenet-admin@Berkeley

In article <285@uwvax.UUCP> derek@uwvax.UUCP (Derek Zahn) writes:
>>	Could some kind soul out there in pixel-land send me an object
>>	description or two, in machine readable form?  I'm looking for some 
>>	three-D...
>	I hate to sound stupid, but what does that mean?
>	Object descriptions?  (you mean spheres, the statue of liberty,
>	or what?)
Yes.  All of the above and then some.
>	Machine readable form?  Is there some standard machine-readable form I 
>	never noticed?
As opposed to a paper listing, orthogonal views, or a picture in perspective.
-- 
Ken Turkowski @ CADLINC, Menlo Park, CA
UUCP: {amd,decwrl,hplabs,seismo,spar}!turtlevax!ken
ARPA: turtlevax!ken@DECWRL.ARPA

------------------------------

Date: 10 Sep 85 07:24:37 GMT
From: tektronix!reed!johnw@Berkeley  (John Windberg)
Organization: Reed College, Portland, Oregon
Subject: Tandy 2000 MS-dos Pascal
References: <10571@rochester.UUCP>, <833@turtlevax.UUCP>
Errors-To: usenet-admin@Berkeley

This looked like as good as any a place to put
this note.  I am searching for a graphics
package for the Tandy 2000's MS-dos PASCAL.
Either info or even routines needed to switch
screens and set pixels will set me on the
right track.  I prefer pascal for my science
related graphics and have found that no-one
knows how to get the Radio Shack machine to
do graphics in anything but BASIC.
Thanks in advance.
P.S. yes I did put a notice in net.trs-80.

------------------------------

Date: 11 Sep 85 01:58:32 GMT
From: harpo!whuxlm!whuxl!houxm!mtuxo!mtuxt!dak2@Berkeley  (D.KALL)
Organization: AT&T Information Systems, Holmdel NJ
Subject: RE: computer vision newsgroup
Errors-To: usenet-admin@Berkeley

 Yes David I agree. One vote for.
Who do we contact to get one?

------------------------------

Date: Wed, 11 Sep 85 15:56:37 pdt
From: stephan@AMES-NAS.ARPA (Stephan Keith)
Subject: Bay Area SIGGRAPH




                San Francisco Bay Area SIGGRAPH Meeting Announcement

	What:	Commercial Animation Production
	Who:	Carl Rosendahl, Pacific Data Images
	Where:	The Exploratorium, Place of Fine Arts, San Francisco
	When:	Tuesday, 24 September 1985, 8:00 pm
		Doors open at 7:30 pm

Abstract: Carl Rosendahl will give an overview of the animation production
process.  A specific job will be followed through from conception to final
delivery as a vehicle for discussion of the different phases of production
and the different tools used.  The basic steps of production which will be
covered include: concepting and storyboarding, modeling, motion design,
lighting and coloring, test shots, rendering, recording and post
production.  Carl will assume a familiarity with general computer graphics
terms and techniques.  The focus will be on how PDI applied these ideas and
others to commercial production.  The talk will be very visual, with slides
and 3/4" tape as support materials.  Carl also encourages the audience to
ask questions during the talk, which will give him a better opportunity to
focus in on the specific interests of the group, rather than try to guess
them.  The talk will be between one and one and a half hours long.

Biography: Carl Rosendahl, President of Pacific Data Images, started his
organization in August, 1980.  He graduated with a degree in Electrical
Engineering from Stanford University in 1979 and worked in Silicon Valley
for 9 months before leaving to start PDI.  He is an active member in ACM
SIGGRAPH, the Broadcast Designer's Association and the Ad Club of San
Francisco.  In addition to his presidential duties, Carl remains actively
involved in animation.  Some of Carl's credits include the Emmy award
winning M Patterns for MTV, the opening for Entertainment Tonight, and the
Sarajevo and Los Angeles Olympic Patch animations for ABC Sports.



                      Future Events - 1985 (Subject to Change)
        Month              Person        Place            Subject

        September 24       Carl Rosenthal Exploratorium  Commercial Animation 
        October 22         Jim Clark      SLAC           Computation Geometry
        November 19 or 26  Film Show      TBD            TBD
        December                                         


------------------------------

From: decvax!cca!datacube!shep@Berkeley
Date: 7 Sep 85 16:55:00 GMT
Subject: Hitachi 63484 Graphics Controller
Precedence: junk
Errors-To: usenet@Berkeley

Has anyone used the Hitachi HD63484 chip? It appears to be a lot
more flexible than last generation's 7220s and clones.
The chip is an "Advanced CRT controller" (read Graphics controller)
with some powerful primatives. I have Hitachi's #U75 handbook on the
part; which I take to be the sole reference.
I would like to interchange questions with other (potential) users
of the part.
Shep Siegel                           UUCP: ihnp4!datacube!shep
Datacube Inc.; 4 Dearborn Rd.; Peabody, Ma. 01960; 617-535-6644

------------------------------

Date: 11 Sep 85 18:28:19 GMT
From: decvax!genrad!panda!talcott!harvard!seismo!ut-sally!oakhill!mot!mulbery@Berkeley  (Bill Mulberry)
Organization: Motorola Microsystems, Phoenix AZ
Subject: fractal dragon
Precedence: junk
Errors-To: usenet@Berkeley

    I have come up with an algorithm that creates the self-squared fractal
dragon that appears on the cover of Mandlebrot's book, Fractal Geometry
of Nature.  It is a simple algorithm.  However, if I interpret his ideas
on the segment colors correctly, that part is not so simple.  In following
his idea, I have come up with a scheme that seems to work but involves
some complicated numerical analysis.  Like the Mandlebrot set, this set
is extremely computationally intensive.
    Has anybody out there tried this out?  And if so, is there a MUCH
SIMPLER method for determining the segment colors?
-- 
------------------------------------
Bill Mulberry @ Motorola Microsystems, Tempe, AZ  U.S.A.
UUCP:  {seismo!terak, trwrb!flkvax, utzoo!mnetor, ihnp4!btlunix}!mot!mulbery
ARPA:  oakhill!mot!mulbery@ut-sally.ARPA             AT&T:  602-438-3039
-------------------------------------

------------------------------

Date: 12 Sep 85 04:43:00 GMT
From: decvax!cca!reiner@Berkeley  (David Reiner)
Organization: Computer Corp. of America, Cambridge
Subject: PC/AT as graphics-oriented support environment
Precedence: junk
Errors-To: usenet@Berkeley

I may be dreaming, but does a combination graphics/operating system/windowing
system environment exist for the IBM PC/AT (perhaps with added chips, or
display unit) which provides all or most of:
A unix-like development environment (unix tools)
A run-time environment with virtual memory
A windowing system supporting multiple graphics-oriented windows
(preferably overlapping, but tiling acceptable)
Monochrome graphics with 800 x 800 resolution (more or less)
PC/DOS compatibility (??)
A migration path to IBM's rumored RISC-based workstation or other
successor to the PC/AT (??)
It seems like this would be a fairly common wish-list for anyone
looking to develop graphics-oriented design support tools on an AT
(whether the target area is systems analysis, CAD/CAM, entity-relationship
modelling, or whatever).
I'm interested in any comments on the current (or future) feasibility
of this combination of features, or on experiences people have had
in similar environments.
Responses will be summarized to the net...
Dave Reiner
reiner@cca
decvax!cca!reiner
Computer Corporation of America
4 Cambridge Ctr
Cambridge, MA 02142
(617)-492-8860

------------------------------

Date: 13 Sep 85 18:19:06 GMT
From: decwrl!myee@cashew.DEC@Berkeley  (Michael K. Yee - DTN 231-4166)
Organization: Digital Equipment Corporation
Subject: New to Newsgroups...
Precedence: junk
Errors-To: usenet@Berkeley

	Please put me on the mailing list for the newsgroup for graphics.
	My address is !decwrl!dec-rhea!dec-cashew!myee
Posted:	Fri 13-Sep-1985 14:18 EDT

------------------------------

Date: 13 Sep 85 16:13:59 GMT
From: dual!ames!eugene@Berkeley  (Eugene Miya)
Organization: NASA-Ames Research Center, Mtn. View, CA
Subject: Foreign Language Technical Material
Precedence: junk
Errors-To: usenet@Berkeley

Lately, there have been significant technical advances from non-English
speaking countries: Japan and the Continent.  How many know the Japanese
equivalent to the CACM?  What is the German equivalent of the IEEE?
It is too easy to say that such organizations and publications are
not significant.  We have been accused of parochialism.
Our problems in the computer industry are rather unique as colleagues in other
fields such as nuclear fusion report that most of their colleagues are,
for all practical purposes, forced to come to the U.S.  This is not the case
with computing
Just as we have file servers and process servers, we have a
distributed system.  Our greatest resource are not the machines, but
the people with special skills.  To this end I propose the following:
Propose:
1) to identify individuals who are capable of providing simple
translation.  It would help if the Universities could do this, but
languages requirements in most graduate CS and EE programs has been dropped.
Perhaps, Universities could get assistance from foreign language
departments.
2) Identify various foreign language publications of technical interest.
Quickly identify articles of wide interest.  This information could
be posted to general interest Usenet newsgroups such as net.research
and net.mag as well as the special interest groups such as the AI List,
net.lang, and so forth.  We should not create news grops, but work
on top of existing groups.
3) Help fund subscription and translations. Perhaps, individuals
without technical translation expertise can get together to pay for
technical translations [commercial], and/or help fund the subscription
of those with technical translation expertise.  This information
could be posted to the standard news groups addressed above.
Dymond@nbs-vms.ARPA has started an info-japan and a nihongo discussion
group on the ARPAnet, but it would be difficult to get Usenet
participation.  I specfically do not want to create new newsgroups.
This structure can be placed atop the existing new group structure.
It appears our most critical needs are in the Eastern Asian languages
such as Japanese, Korean, and Chinese.  Other useful work would include
French, German, and the other European languages.  We have to look to
the Universities for much of our assistance, but private organizations
and government can also help.  We can certainly make inquires.
The Usenet extends into Japan, France, and other non-English native
countries.  We must take benefit of these contributors.
Similarly, we can contribute to these countries by tagging significant
English language documents.
I am willing to act as a clearing house for determining finding
individuals and groups, and specific journals.  For this purpose,
I am giving my address an ARPA, uucp gateway.  Send the mail inquires
there.  More in a couple of weeks.
------------------------------

--eugene miya
  NASA Ames Research Center
  {hplabs,ihnp4,dual,hao,decwrl,allegra}!ames!amelia!eugene
  eugene@ames-nas

------------------------------

Date: 13 Sep 85 21:17:16 GMT
From: ucdavis!lll-crg!seismo!mcvax!cernvax!ethz!prl@Berkeley  (Peter Lamb)
Organization: CS Department, ETH Zuerich, Switzerland
Subject: GKS for UNIX 4.2
Precedence: junk
Errors-To: usenet@Berkeley

Does anyone have a GKS implementation for 4.2BSD?
Please reply by mail to {seismo|decvax}!mcvax!cernvax!ethz!prl
Thanks
Peter Lamb
Institut fur Informatik
ETH
8092 Zurich
Switzerland

------------------------------

Date: 13 Sep 85 18:11:23 GMT
From: ucdavis!lll-crg!gymble!umcp-cs!seismo!ut-sally!oakhill!mot!mulbery@Berkeley  (Bill Mulberry)
Organization: Motorola Microsystems, Phoenix AZ
Subject: paper topics
Precedence: junk
Errors-To: usenet@Berkeley

    HELP!!  I have to do a paper for a class dealing with a subject in
either image processing or computer vision.  The paper has to be about
that subject as well as what current research is going on in that area.
    If anybody out there is involved in these areas, I would appreciate
if they could tell me about some subjects that would be a good topic as
well as sources to look up, references, etc.
    Some topics I have considered are:
	  
	  1.  time - varying imagery
	  2.  stereopsis and surface reconstruction
	  3.  satellite imagery
     Any ideas for references for these topics.  Thanks.
-- 
------------------------------------
Bill Mulberry @ Motorola Microsystems, Tempe, AZ  U.S.A.
UUCP:  {seismo!terak, trwrb!flkvax, utzoo!mnetor, ihnp4!btlunix}!mot!mulbery
ARPA:  oakhill!mot!mulbery@ut-sally.ARPA             AT&T:  602-438-3039
-------------------------------------

------------------------------

From: unmvax!nmtvax!allan@Berkeley
Date: 12 Sep 85 21:40:31 GMT
Organization: New Mexico Tech, Socorro
Subject: Need information on a graphics tablet
Precedence: junk
Errors-To: usenet@Berkeley

*** REPLACE THIS LINE WITH THE TIME OF DAY ***
I have a Vector General Data Tablet and no manual to go with it.  This
makes it very hard for me to figure out how to use the silly thing.
The serial (model) number is 001.  I have tried writing to Vector 
General using the address on the Tablet, but the poor postman in
Canoga Park could not figure out what to with the request and returned
it to me.  Can anyone out there help me?
Allan F. Perry
...lanl!unm-cvax!nmtvax!allan


------------------------------

End of INFO-GRAPHICS
********************