Path: utzoo!utgpu!water!watmath!clyde!att!rutgers!ucsd!ucbvax!ADS.COM!Vision-List-Request From: Vision-List-Request@ADS.COM (Vision-List moderator Phil Kahn) Newsgroups: comp.ai.vision Subject: Vision-List delayed redistribution Message-ID: <8809122201.AA06515@deimos.ads.com> Date: 12 Sep 88 22:44:52 GMT Sender: daemon@ucbvax.BERKELEY.EDU Reply-To: Vision-List@ADS.COM Distribution: inet Organization: The Internet Lines: 207 Approved: vision-list@ads.com Vision-List Digest Mon Sep 12 14:44:52 PDT 1988 - Send submissions to Vision-List@ADS.COM - Send requests for list membership to Vision-List-Request@ADS.COM 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 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 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 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 ------------------------------ End of VISION-LIST ********************