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Date: 12 Sep 1988 14:44:52-PST
From: Vision-List moderator Phil Kahn <Vision-List-Request@ads.com>
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Vision-List Digest	Mon Sep 12 14:44:52 PDT 1988

 - Send submissions to Vision-List@ADS.COM
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Today's Topics:

 Postdoc. Fellowships at National Research Council, Canada
 Del-squared G
 problems with multiple mailings, etc.
 book on basics of optical scanning
 Congress on Cybernetics and Systems 
 Where to go for image processing software?

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

Date: 7 Sep 88 15:50:53 GMT
From: Stephen MacKay <samackay@watcgl.waterloo.edu>
Subject: Postdoc. Fellowships at National Research Council, Canada
Keywords: postdoctorate fellowships, intelligent robotics
Organization: National Research Council, Canada


Postdoctorate Fellowships at NRC

Applications for postdoctorate fellowships are being accepted 
from citizens of U.S.A., U.K., Japan, W. Germany, France, and 
Italy, in the area of Intelligent robotics.  These are 1 yr., 
non-renewable fellowships valued at approximately $CAN 29K plus 
travel expenses.  Interested parties can contact: 

Nestor Burtnyk or Colin Archibald
Laboratory for Intelligent Systems
National Research Council of Canada
Ottawa, Ont. Canada K1A 0R8
(613) 993-6580

email: archibald@dee.nrc.ca


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Date: 8 Sep 88 06:59:09 GMT
From: srini@mist.cs.orst.edu (Srinivas Raghvendra)
Subject: Del-squared G
Keywords: edge detectors, zero crossings, Gaussian filter, David Marr


	In the literature I hae been looking up, there are frequent references
to the Del-squared G operator ( the Laplacian of the convolution of the image
with a Gaussian filter ). I would like to try and apply this operator to a
set of images that I have and study the results. I have the following questions
for you net folks :
	(1) Can you point me to an article/book that discusses the actual 
implementation of this operator. I have read a couple of David Marr's articles
that tell me why the operator is good and stuff of the sort. I need to know
how I can actually implement such an operator in code ( as a program ).
	(2) Related to this is the issue of detecting zero-crossings in the 
output of the above operator. Can this step be combined in some way with the
convolution step ?

	I apologise if this is not the appropriate newsgroup for this request.
I am unable to think of a better group for posting this request.

	I will be grateful to those of you who will take some time off to 
respond to my request.

	Thank you all.
	Srinivas Raghvendra ( srini@mist.cs.orst.edu )

[ (1) The convolution is usually implemented using a discrete mask.
      The formulas used to compute this mask is in many books (e.g.,
      Computer Vision by Ballard & Brown, Rosenfield & Kak,
      and other newer vision books.  Symmetric (isotropic) masks are 
      linearly decomposable, and can be implemented as two passes using
      one dimensional masks (see PAMI articles in the past year or two).
      Zero crossings can be detected by thresholding and detecting transition
      points.
  (2) I don't know of any.  
      			phil... 	]


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

Date: Fri, 9 Sep 88 20:57:07 PDT
From: Vision-List-Request <vision@deimos.ads.com>
Subject: problems with multiple mailings, etc.

As many of you might have noticed, there have been some rather
annoying multiple mailings of the List.  In part, this occured because
our SENDMAIL program has a problem with large distribution lists
(there are 367 sites on my master list). In addition, there have
been some problems with multiple mailings from buggy UUCP node
programs.

The SENDMAIL problems are easy to fix (simply break the list down into
chunks), but I am attempting to streamline the list by having more
sites with multiple recipients set up local redistribution systems.
The List is also distributed as a USENET digest with the title
comp.ai.vision. If you have access or currently access the List
through this facility, and you currently receive the List directly
through your mail facility, please let me know so that I can delete
you from the master list.  Please let me know of other mailer
anomalies or problems you are having.

I find my time with the List dominated by fielding problems in the
mailing of the List itself.  I am cleaning this up now to free up my
time to spend more time moderating the List.  Perhaps throw in a bit
of wood to stimulate some heated discussions. 

phil...

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

Date: 10 Sep 88 14:31:23 GMT
From: dscatl!mgresham@gatech.edu (Mark Gresham)
Subject: book on basics of optical scanning
Organization: Digital Systems Co. , Atlanta

Could anyone out there recommend a book on the basics of how optical
character recognition is handled?  And I do mean the *basic*,
fundamental principles of how the decisionmaking is done by the
software.

Please e-mail response. Thanks!

--Mark Gresham

++++++++++++++++++++++++++++++++
INTERNET: mgresham@dscatl.UUCP
UUCP: ...!gatech!dscatl!mgresham
++++++++++++++++++++++++++++++++


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

Date: Mon, 12 Sep 88 14:07:58 PDT
From: Vision-List-Request <vision>
Subject: Congress on Cybernetics and Systems 

[Reposted from Neuron digest.	phil... 	]

	Date: 9 Sep 88 20:13:56 GMT
	From: SPNHC@CUNYVM.CUNY.EDU
	Subject: Congress on Cybernetics and Systems
	Organization: The City University of New York - New York, NY
	DISCLAIMER: Author bears full responsibility for contents 
		    of this article 
	
	
	             WORLD ORGANIZATION OF SYSTEMS AND CYBERNETICS
	
	         8 T H    I N T E R N A T I O N A L    C O N G R E S S
	
	         O F    C Y B E R N E T I C S    A N D   S Y S T E M S
	
	                            to be held
	                         June 11-15, 1990
	                                at
	                          Hunter College
	                    City University of New York
	                         New York, U.S.A.
	
	     This triennial conference is supported by many international
	groups  concerned with  management, the  sciences, computers, and
	technology systems.
	
	      The 1990  Congress  is the eighth in a series, previous events
	having been held in  London (1969),  Oxford (1972), Bucharest (1975),
	Amsterdam (1978), Mexico City (1981), Paris (1984) and London (1987).
	
	      The  Congress  will  provide  a forum  for the  presentation
	and discussion  of current research. Several specialized  sections
	will focus on computer science, artificial intelligence, cognitive
	science, psychocybernetics  and sociocybernetics.  Suggestions for
	other relevant topics are welcome.
	
	      Participants who wish to organize a symposium or a section,
	are requested  to submit a proposal ( sponsor, subject, potencial
	participants, very short abstracts ) as soon as possible, but not
	later  than  September 1989.  All submissions  and correspondence
	regarding this conference should be addressd to:
	
	                    Prof. Constantin V. Negoita
	                         Congress Chairman
	                   Department of Computer Science
	                           Hunter College
	                    City University of New York
	             695 Park Avenue, New York, N.Y. 10021 U.S.A.
	

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

Date: Mon, 12 Sep 88 14:28:55 PDT
From: gungner@CS.UCLA.EDU (David Gungner)
Subject: Where to go for image processing software?

I'd like to know how to order GYPSY, VICAR, and XVISION image
processing software.  

Thanks ...  David Gungner,  UCLA Machine Perception Lab


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End of VISION-LIST
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