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VISION-LIST Digest 1988 09 12
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?
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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
------------------------------
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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