HDTenEightyP/NetNews huggingface dataset:
From: braker@ennex2.eng.utsa.edu (Jim Brakefield)
Subject: Re: Edge Detection And Segmentation Using Khorus And PV-WAVE
Keywords: edge detection, image processing
Organization: Univ of Texas at San Antonio
Distribution: sci.image.processing
Date: Wed, 27 Jan 1993 14:05:31 GMT

In article <ANADEEM.93Jan24173844@ampere.sci.image.processing>  
anadeem@ampere.sci.image.processing (Ahmed Nadeem) writes:
> Netters,
>         I am currently working on a research project that involves  
generating
> solid or geometric models from MRI images. Part of the procedure will  
require 
> me to possibly perform Thresholding & Edge Detection on my MRI images in  
order
> to find out which pixels lie on boundaries between two different  
regions. 
> Thus, I would like to have an Image Processing Software package that has  
good 
> Edge Detection and Classification ( Segmentation ) modules/routines.  
>         I have heard a lot about Khoros ( University Of New Mexico) and 
> PV-WAVE (Precision Visuals) and was curious if other professionals or  
students
> had any experience on how good they are for the above purposes.  
Suggestions 
> on other software packages are also much welcome.
>                                                        Thanks,
>                                                               Ahmed  
Nadeem

I have implemented "steerable filters" (Freeman & Adelson, PAMI Sept.  
1991)
using PV~WAVE.  Filtering via convolution in frequency domain.  I only
implemented line element rather than edge detection & location.

You should checkout the MegaWave package from France.  It does anisotropic
blurring (Saint-Marc, Chen, & Medioni; PAMI June 1991).

Newsgroups: sci.image.processing
From: ces@cs.uwa.oz.au (Cesar Bertino)
Subject: Framegrabber question
Organization: Dept. Computer Science, University of Western Australia.
Date: Mon, 25 Jan 1993 08:11:00 GMT


Does anybody know of a framegrabber that allows gain adjustment of the
video signal prior to digitisation. I need a gain adjustment from 1 to
around 50.


Ces Bertino
ces@cs.uwa.edu.au
Department of Computer Science
The University of Western Australia


Newsgroups: sci.image.processing
From: phantom@casbah.acns.nwu.edu (James Choi)
Subject: apparent resolution vs. bits/pixel
Organization: Northwestern University, Evanston Illinois.
Date: Sat, 23 Jan 1993 23:44:20 GMT

I would like to do reseach on apparent resolution in function of pixel
depth (bits/pixel).  Could someone forward me, or post the references on
this subject?

More specifically, I am interested in generating a high resolution binary
image from a medium resolution gray scale image.  One immediate application
for this technique is OCR where threshold-only-based binarization of the
original image causes many problems including broken lines, etc.

Thank you in advance.

James Choi
Newsgroups: sci.image.processing
From: Anthony@dip1.ee.uct.ac.za (Anthony Kanfer)
Subject: Info on Lifeview multimedia framegrabber?
Date: Fri, 22 Jan 93 12:45:44 GMT
Reply-To: Anthony@dip1.ee.uct.ac.za
Organization: University of Cape Town

Hi

I am currently in possession of a Lifeview LV-001 multimedia framegrabber card and wish to use this card for a cheap image processing application.  My problem is that the only software supplied runs under Windows (iPhoto V. 3.0 and Video Panel).  I need technical information in order to program the card directly.  iPhoto seems fairly common with these type of multimedia cards.  The Lifeview card seems to be based on the Philips Video Digital Signal Processing Chip Set and the CHIPS F82C9001 and is manufact



ured by Animation Technologies, Taiwan.  I have repeatedly tried to contact the manufacturers without success and have not been able to source any technical information whatsoever.   

If anyone has any useful information - either concerning the Lifeview or any similar framegrabber - please mail me.  Any information would be most appreciated.

Thanks
Anthony



---
=======================================================================
Anthony Kanfer E-Mail: Anthony@dip1.ee.uct.ac.za
Digital Image Processing Laboratory          
Dept of Electrical Engineering
University of Cape Town, South Africa
        
"Extraordinary", declared the scientist, peering up from his microscope.
From: newberry@aquarius.as.arizona.edu (Mike Newberry)
Newsgroups: sci.image.processing
Subject: Re: Help Wanted: Contour Tracing
Date: 22 Jan 93 20:45:52 GMT
Organization: University of Arizona, Tucson, AZ

In article <TEO.93Jan21203514@Xenon.Stanford.EDU> teo@cs.Stanford.EDU writes:
>In article <1993Jan21.192619.10241@pinet.aip.org> scotj@pinet.aip.org (scot_shinderman) writes:
>
>
>>    While reading the standard image processing books I have noticed one
>> algorithm that seems to be glossed over: contour tracing.  In the
>> pictures that I am scanning, a filter is run across the pixels and a
>> threshold is applied to produce either white or black pixels for the
>> grey-scale.  At this point there is usually a rather disconnected set of
>> dots due to noise in the picture but also some strong edges from the
>> filter.  What is the "pratical" method of moveing along the detected
>> pixels to find lines (or curves).  If I try to step from one pixel to
>> the next by looking in a neighborhood, then the path almost always gets
>> caught up in the noise off to one side or another.  Is there a way to
>> "nudge" the search in a particular direction based on previous motions.
>>   Any suggestions (or sample code!) would be greatly appreciated.
>
>Just off the top of my head.  Have you considered trying to use some
>iterative deepening backtracking procedure (algorithms like A*)
>heuristically guided by some bayesian probability of the type of curve
>which you are expecting to see?
>
>-Patrick
>
>-------------------------------------------------------------------------------
>Patrick Cheng-San Teo                                       teo@cs.stanford.edu
>Department of Computer Science                      
>Stanford University                                  Home Phone: (415) 424-0330
>
>"Everything should be made as simple as possible, but not simpler"
>-- Albert Einstein
>-------------------------------------------------------------------------------

Do we really need these kinds of answers wasting net bandwidth?

Stick to the motto in your by-line and offer constructive advise, please.
From: laplante@sun490.fdu.edu (Phil Laplante)
Newsgroups: sci.image.processing
Subject: Session on Real-Time Image Processing
Date: 22 Jan 93 21:30:13 GMT
Organization: Fairleigh Dickinson University




            * * * C A L L    F O R    P A P E R S * * * 


Papers are requested for  a special session on "Real-Time Image Processing" 
to be held at the 1993 IEEE Systems, Man, and Cybernetics Conference 
in Le Touquet France, October 17-20, 1993.

The IEEE SMC conference is the showcase gathering for the IEEE SMC interest
group.  IEEE SMC covers a broad range of topics in image processing, robotics,
and artificial intelligence.  The archival journal of the society is the
IEEE Transactions on Systems, Man, and Cybernetics.

Topics for the session include but are not limited to:

Real-time image processing applications
Real-time image processing protocols
Real-time image processing specification 
Real-time image processing architectures
Multi-media 
Virtual reality
Remote sensing and control
Real-time image compression

Papers should be 6-10 pages in length and will be published in the
conference proceedings.  Authors will be expected to make a presentation
at the conference.

The deadlines for submission to the conference are as follows:

Extended abstract submission   February 15, 1993
Preliminary acceptance         May 1, 1993
Full paper submission          July 15, 1993
Final acceptance               August 1, 1993

Please send extended abstracts via post, FAX, or email to:

Dr. Phil Laplante
Department of Mathematics and Computer Science
Fairleigh Dickinson University
Madison, NJ 07480
laplante@fdumad.fdu.edu
(201) 593-8680 (voice)
(201) 593-8886 (FAX)

If you need further information, please do not hesitate to call.
From: chmin@cislabs.pitt.edu (Cheol-hong Min)
Newsgroups: sci.image.processing
Subject: NMR head images
Date: 22 Jan 93 04:01:58 GMT
Organization: University of Pittsburgh

Hi! 
I am looking for NMR head images in 12-bit grey scale.
Can someone please tell me where I can find these images?

Thanking you in advance.


Cheol-Hong Min
min@caroline.ee.pitt.edu
Newsgroups: sci.image.processing
From: lapin@casbah.acns.nwu.edu (Gregory Lapin)
Subject: Re: Laplace Edge Detection
Followup-To: sci.image.processing
Keywords: edge
Organization: Northwestern University, Evanston Illinois.
Date: Fri, 22 Jan 1993 16:29:37 GMT

In article <C0ytox.F7r@watserv1.uwaterloo.ca> bgilhuly@hertz.uwaterloo.ca (Barry Gilhuly) writes:
>
>
>	|  0 +1  0 |
>	| +1 -4 +1 |
>	|  0 +1  0 |
>
>When this matrix is applied to the image, it creates a 'zero-crossing'
>in the resulting output, giving both positive and negative values at 
>that point.  The problem, of course, is the negative values.  In a gray-scale
>image (or even colour I guess), the range isn't supposed to be negative.
>How is it represented?  Or, are the negative values discarded as extraneous
>since the positive value indicates where the edge is in the image?
Apply an offset so that a middle gray level (eg 128 in an 8 bit image)
represents zero.  Everything below 128 will be negative and above will be
positive.

>Thanks for all of your assistance,
>Barry.
You're welcome.
Greg

Xref: sparky sci.image.processing:1706 comp.sys.sun.wanted:2221
From: tim@ccwf.cc.utexas.edu ()
Newsgroups: sci.image.processing,comp.sys.sun.wanted
Subject: image file conversion for sun accelerator board
Date: 25 Jan 1993 22:10:57 GMT
Organization: The University of Texas at Austin, Austin TX
Distribution: world
NNTP-Posting-Host: daisy.cc.utexas.edu
Originator: tim@daisy.cc.utexas.edu


A colleague of mine without internet access is looking for a way to convert
ascii or binary file images to a "tv" or TAAC1" file format that is used by
Sun accelerator boards with SUNVISION software.  Does anyone know of any PD 
source that would do this conversion, such as the pbm package?  I would 
appreciate any information sent to my email address: tim@ccwf.cc.utexas.edu
Thanks.

Tim
From: stanley@ruby.OCE.ORST.EDU (John Stanley)
Newsgroups: sci.image.processing
Subject: Re: IP packages for PC?
Date: 25 Jan 93 14:44:17 GMT
Article-I.D.: gaia.1k0uc1INNq9p
Organization: Coastal Imaging Lab, College of Oceanography
NNTP-Posting-Host: ruby.oce.orst.edu

In article <1993Jan24.160609.5663@sbcs.sunysb.edu> sbarrkum@engws3.ic.sunysb.edu (Se kumarakulasinghe) writes:
>disp sub 6     " this displays the image at 6 time reduction in scale."

Not really. What this means is "subsample". "Take every 6th pixel from
every 6th line."

If you use IMDISP like this on an image which has thin horizontal or
vertical features, you will probably not see them. The NASA satellite
images have many of these.
From: jogl@merry.imib.rwth-aachen.de (Joachim Glaubrecht  #Alwd#)
Newsgroups: sci.image.processing
Subject: Re: animation program for X11R4 inquiry
Date: 28 Jan 1993 09:30:10 GMT
Organization: Institut f. Med. Statistics @ Dokumentation
Distribution: usa
NNTP-Posting-Host: merry.imib.rwth-aachen.de

In article <1993Jan27.201322.19924@newshost.lanl.gov> yuchou@oriole.lanl.gov (Hu Yuchou) writes:
>Hi netters,
>
>I'm looking for an image animation program that allows one to animate a
>sequence of images for X11R4 and greatly appreciate any suggestions.
>
>Thanks in advance
>
>Yuchou

hi,
 
xgrasp.tar.Z is the file you are looking for.
~~~~~~~~~~~~ ask ARCHIE for it ...

-- 
    ___            _____________________________________ 
   /  /  _____    !  jogl@tolkien.imib.rwth-aachen.de   !
   __/__/_/ Gl    !    RWTH-Aachen, Germany, Europe     !
  /_/             !_Never_send_a_boy_to_do_a_man's_job__!
From: mark-r@ee.man.ac.uk (Mark Robinson (JO PhD))
Newsgroups: sci.image.processing
Subject: Re: Singular Value Decomposition Algorithm
Date: 25 Jan 93 09:47:28 GMT
Reply-To: mark-r@spec0.ee.man.ac.uk (Mark Robinson (JO PhD))
Organization: Dept Electrical and Electronic Eng, Manchester University, UK

In article <1jom89INNlhl@rs6000.bham.ac.uk> stannaee@eee.bham.ac.uk (Mr. Eric E. Stannard) writes:
>Does anyone have or know where to obtain an efficient routine to
>calculate the Singular Value Decomposition of a real matrix. The
>code would preferably be in C/C++ but Fortran is fine. 
>Is there any free library routines available to do this available by
>ftp?
>
>Eric Stannard

If you're going to do a lot of this sort of thing, you could get
the NAg (Numerical Analysis Group) library. It doesn't come cheap,
but it's money well spent because you'll never be stuck for a
numerical methods routine again.

Mark

--
______________________________________________________________________
Multimedia Information Systems Lab | I'm a slug and I'm alright
Dept. Of Electrical Engineering    | That's 'cos I'm hermaphrodite
University of Manchester           | It bothers me not that I have no
Dover St. Manchester. M13 9PL      |                     friends
England                            | 'Cos I have fun with both my ends
Newsgroups: sci.image.processing,comp.sys.sun.hardware
From: scornd4@solomon.technet.sg (Ong Hian Leong)
Subject: Re: Sun VideoPix Image Capture Board -- Any Good?
Followup-To: sci.image.processing,comp.sys.sun.hardware
X-Newsreader: TIN [version 1.1 PL8]
Date: Wed, 27 Jan 1993 00:45:14 GMT

If you're on SUNs have you considered products from RasterOps.
I was at a demo at the local SUN distributor. More impressed with
the RasterOps product. That was some time back, sveral other products
on the market too.
Newsgroups: sci.image.processing
From: anadeem@ampere.sci.image.processing (Ahmed Nadeem)
Subject: Edge Detection And Segmentation Using Khorus And PV-WAVE
Organization: /home/ampere1/anadeem/.organization
Distribution: sci.image.processing
Date: Mon, 25 Jan 1993 00:38:44 GMT

Netters,
        I am currently working on a research project that involves generating
solid or geometric models from MRI images. Part of the procedure will require 
me to possibly perform Thresholding & Edge Detection on my MRI images in order
to find out which pixels lie on boundaries between two different regions. 
Thus, I would like to have an Image Processing Software package that has good 
Edge Detection and Classification ( Segmentation ) modules/routines.  
        I have heard a lot about Khoros ( University Of New Mexico) and 
PV-WAVE (Precision Visuals) and was curious if other professionals or students
had any experience on how good they are for the above purposes. Suggestions 
on other software packages are also much welcome.
                                                       Thanks,
                                                              Ahmed Nadeem
Newsgroups: sci.image.processing
From: kishanms@iastate.edu (Kishan S Mallur)
Subject: Info on lecturers and books used by math oriented CS dept needed!
Summary: Need the name of lecturers and the text books they use when teaching a 
Keywords: math, image processing, text books
Organization: Iowa State University, Ames IA
Date: Tue, 26 Jan 1993 01:52:58 GMT

Hi,
	I badly need info on either a math oriented image processing course(as opposed to an engineering oriented one).  I would like to know if  a com sci dept not affiliated to an engineering group conducts such  a course.
	If you have heard of or belong to such a department then kindly send me mail at my own address "kishanms@iastate.edu" or post on this net..
I would like details like the name of the course, the text used, and the prof who is teaching the course.
Need this info in hurry.  Would greatly appreciate any help.
Thanks,
Kishan.
Newsgroups: sci.image.processing
From: jogl@merry.imib.rwth-aachen.de (Joachim Glaubrecht  #Alwd#)
Newsgroups: sci.image.processing
Subject: Re: Khoros availability ?
Date: 27 Jan 1993 11:27:16 GMT
Organization: Institut f. Med. Statistics @ Dokumentation
NNTP-Posting-Host: merry.imib.rwth-aachen.de

In article <mosscrp-260193100141@cc-k-box32.cc.umanitoba.ca> mosscrp@ccu.umanitoba.ca (David R. Mosscrop) writes:
>Hello;
>
>Is the source code, and some binaries for Khoros available on some nice
>transportable format like a CD-ROM.  ftp access is good but for such large
>programs can be a pain. ...

>Thank you.
>David R. Mosscrop

hi,
 
just enter comp.soft-sys.khoros for more details. 
          ~~~~~~~~~~~~~~~~~~~~~~
i think CD-ROMs are NOT supported, but TAPEs of (nearly) any kind.

-- 
    ___            _____________________________________ 
   /  /  _____    !  jogl@tolkien.imib.rwth-aachen.de   !
   __/__/_/ Gl    !    RWTH-Aachen, Germany, Europe     !
  /_/             !_Never_send_a_boy_to_do_a_man's_job__!
Newsgroups: sci.image.processing
From: delozier@condor.mcs.kent.edu (Greg Delozier)
Subject: Re: Singular Value Decomposition Algorithm
Organization: Department of Mathematics and Computer Science, Kent State University
Date: Tue, 26 Jan 1993 04:36:49 GMT

In response to the request for Singular Value Decomposition algorithm code:

The well-known Numerical Recipes book has a pair of routines to do this; the
original book had the routines in Fortran, and they have since been translated
to Pascal and C (both by the authors, and by myself, some years ago; it's
not too much work.) These have proven robust and useful in practice. 

The Pascal code for these is available via ftp at (I think) garbo.uwasa.fi
in the msdos archive, turbopas directory, and is called something like 
nrpas13.zip.  The C & Fortran code is not, to my knowledge, available via ftp
and the Pascal code won't make too much sense without the book.

Hope this helps; I've used these routines to obtain least-squared solutions
for years and recommend them highly.

-greg

Greg DeLozier/Sr.Analyst, Loral Defense Systems/Grad Student, Kent State Univ.
Newsgroups: sci.cognitive
From: christo@psych.toronto.edu (Christopher Green)
Subject: Re: Cog Psych theories
Organization: Department of Psychology, University of Toronto
Date: Sat, 23 Jan 1993 01:51:23 GMT

In article <22JAN93.20070220.0093@VM1.MCGILL.CA> QWFK@MUSICT.MCGILL.CA (QWFK000) writes:
>Christopher Green says:
>"Analogy, judgement,
>reasoning, concept formation etc. are in awful shape, as far as I'm conc
>I have seen little in those areas that I would recognize as a theory...
>and they have been my central areas of interest, so it's not as though
>I'm not familiar with their literature."
>
>This comment interests me because for a while now I've had a nagging
>worry that a lot of the so-called theories in these fields were not
>exactly theories.  The problem is, I can't put my finger on the
>reason why.  I think it partly has to do with the overuse/abuse of
>"models".  But there's a lot more to it than that.  Chris, how do
>explanations in those fields fall short of your definition of a
>theory?
>
Obsessive use of an unexplicated notion of "model"  ("schema", etc.)
is at the core.  The "theories" put forward by researchers such a 
Johnson-Laird, Lakoff, Rosch, Gick & Holyoak, Cheng & Holyoak lack 
rigor in the extreme. To act like a Hempelian for a moment, theories
have got to have formal objects manipulated by formal rules or they
are in grave danger of relying upon our intuitions for their
explanatory power. Theories by all those mentioned above do exactly
this and, thus, are popular and influential without really adding
much to our knowledge. Of course, Lakoff would say I'm in the
grip of an outdated "objectivist" ideology, but I have yet to see
anything offered that can adequately replace it.

-- 
Christopher D. Green                christo@psych.toronto.edu
Psychology Department               cgreen@lake.scar.utoronto.ca
University of Toronto
Toronto, Ontario M5S 1A1
Xref: sparky sci.cognitive:1027 comp.ai.philosophy:7363
From: sbgreene@phoenix.Princeton.EDU (Steven Greene)
Subject: Re: Lesbian/Gay Rights and the Cognitive Science Meeting
Originator: news@nimaster
Organization: Princeton University
Date: Wed, 20 Jan 1993 18:48:08 GMT

In article <16B5CA3FB.JHARTLEY@cmsa.gmr.com> JHARTLEY@cmsa.gmr.com writes:
>I guess democracy is okay unless it doesn't meet your selfish goals.

The claim that those who support a boycott of Colorado are somehow
subverting the democratic process is a popular one among the anti-
boycott groups because it shifts the focus from the pernicious effects
of Amendment 2 to the tactics of its opponents.  However, this
argument rings about as true as do John Cardinal O'Connor's words when
he speaks of the importance of the separation of church and state.

For the record, the people of Aspen, Boulder, and Denver, through
their democratic processes, had all passed laws that prohibited
discrimination on the basis of sexual orientation.  Amendment 2
invalidates all those laws.  Amendment 2 subverts the democratic
process by making it impossible for any city in Colorado to decide
that it wants to protect its gay and lesbian residents from 
discrimination.

I believe that all people who recognize the evil of discrimination 
have a moral obligation to make their opposition to Amendment 2
known and to encourage its repeal in some way.  Each person
must decide what action to take.  I will not attend any event
or do business with any company in Colorado until Amendment 2 has
been repealed.  Others must decide for themselves what to do, but
I urge them to take steps not to let what they see as the carrying
out of their planned activities be interpreted as an endorsement of 
the current political climate in Colorado.
From: pautler@ils.nwu.edu (David Pautler)
Newsgroups: sci.cognitive
Subject: Re: AI vs Cognitive Science
Date: 25 Jan 93 20:51:02 GMT
Article-I.D.: ils.1993Jan25.205102.7441
Organization: The Institute for the Learning Sciences

Aaron Sloman says:
> Taking a broad perspective, then, we can say that as a matter of
> historical, social, fact (i.e. not a matter of definition), AI
> activities encompass two main kinds of goals ENGINEERING and SCIENTIFIC,
> both concerned with the study of *designs* for intelligent systems,

Biology has grown beyond its misconceptions about structure and behavior
based on "design principles".  When will cognitive science and AI?

> where "intelligent" is deliberately left undefined because we don't yet
> know what options there are for drawing boundaries within the whole
> space of behaving systems. (It is therefore premature to try to define a
> sub-set of behaving systems as intelligent.)

> So AI thus conceived includes:

> 1. Engineering
>     Attempting to design useful machines that do things that require
>     intelligence (especially human-like intelligence), for example:

If we are in fact unsure of what "intelligence" means, why are we sure that
AI engineering is any different from software engineering?

     -dp-
Newsgroups: sci.cognitive
From: swann@divsun.unige.ch (SWANN philip)
Subject: Re: Lesbian/Gay Rights and the Cognitive Science Meeting
Organization: University of Geneva, Switzerland
Date: Fri, 22 Jan 1993 14:11:36 GMT

In article <2111@blue.cis.pitt.edu>, al+@pitt.edu (Alan M Lesgold) writes:

> boycott or endorsing the amendment.  Obviously, setting any further meetings
> in Colorado after this June would itself be a political action in the current
> context, and thus is unlikely...

What sort of logic is this???  If I understand you right, you disagree with the
majority vote in a democratic referendum and you propose to punish those
voters by trying to hit them in the wallet. Did you ever change your opinions
because someone threatened to punch you in the teeth?

- philip swann




Newsgroups: sci.cognitive