HDTenEightyP/NetNews huggingface dataset:
Newsgroups: sci.image.processing
From: lai@vis.toronto.edu (Yuzhong Lai)
Subject: frame grabbers/controllers
Date: 12 Sep 92 03:34:55 GMT
X-Mailer: Mail User's Shell (7.2.3 5/22/91)

 Hi, can anybody out there give me some pointer on the information of
frame grabbers or controllers used for image processing?

 I would like to gather the responses and post them on the net.

           
 Simon Lai
Newsgroups: sci.image.processing
From: venky@jayhawk.asd.sgi.com (Venkatesh Narayanan)
Subject: separable kernels for sharpening
Keywords: separable, sharpening
Organization: Silicon Graphics, Inc.
Date: Tue, 15 Sep 1992 22:01:07 GMT

Need information on how to generate separable kernels for
image sharpening.  Can any separable sharpening kernels
be genrated from the gaussian waveform ?
Thanks. Will post summary.

-- 
---
Venkatesh Narayanan	    Silicon Graphics, Inc.		    
VMD/Image Processing    (415) 390-5314	venky@jayhawk.asd.sgi.com 
Newsgroups: sci.image.processing
From: elesrini@nuscc.nus.sg (SRINIVASAN (A/P))
Subject: SOFTWARE FOR PRINTING IMAGES ON LASER PRINTERS
Organization: National University of Singapore
Date: Sat, 12 Sep 1992 02:08:07 GMT

Often I have come across good quality half-tone type images printed
using laser printers. Can someone provide info about such software for
converting 8 bit gray level images stored in memory into printer output.
Thanks. ( would appreciate public domain if available ).

- Srinivasan
From: yu@bilbo.gra.vtt.fi (Xiaohan Yu)
Newsgroups: sci.image.processing
Subject: Re: Access Brodatz's Photo Album
Date: 9 Sep 1992 12:40:55 GMT
Organization: Technical Research Centre of Finland
NNTP-Posting-Host: bilbo.gra.vtt.fi

Does anyone have the program to convert postscript file to rawformat file or
bitmap file?
I need your help.
Thank you in advance
Yu

Newsgroups: sci.image.processing
From: rodney@magritte.ipl.rpi.edu (Rodney Peck II)
Subject: Re: Sub-band coding of HDTV Images Help
Organization: Rensselaer Polytechnic Institute, Troy, NY
Date: Wed, 9 Sep 1992 16:12:46 GMT

In article <DAVE.92Sep9192500@pipi.iis.u-tokyo.ac.jp> dave@pipi.iis.u-tokyo.ac.jp (David Wuertele) writes:
>In article <1992Sep8.221740.9893@uoft02.utoledo.edu> kmurali2@uoft02.utoledo.edu writes:
>>	  I am plannning to do my MS thesis in Sub-band coding of HDTV Images. 
>>Are there any easily undestanding (w/o much of abstract Mathematics)
>>tehnical papers or text books avialable ? Is there any technique that can
>>be used to reduce the bit/pixels. Any help would be appreciated.
>
>Anything published by the following (mostly Bellcore) engineers should be
>useful: H. Gharavi, A. Tabatabai, D.LeGall, T.C. Chen, P.E. Fleischer 
>R. Ansari.  Bellcore has been developing subband coding for ATV for some
>time now.

I would also suggest you look at the work that Phillips has published, as
well as the stuff from RPI's Center for Image Processing Research/IPL.  HDTV
subband coding is exactly what we spend most of our time working on.  In 
fact, if you sent a query letter to our office, I imagine that you could
get a bibliography of papers and tech reports from the lab.  Our address
is:

Center for Image Processing Research
JEC7012
Rensselaer Polytechnic Institute
110 8th Street
Troy, NY  12180-3590
ATTN: Liz Haight

Feel free to mention my name and that you saw this on the net.

>You should also check out _Subband Image Coding_, edited by John W. Woods,
>Kluwer Academic Publishers.  Chapters 6&7 (and their bibliographies)
>should be most useful.

Dr. Woods is one of the major researchers in the CIPR/IPL.  You could
ask for a bibliography of his recent papers as well.

Good luck!
Rodney Peck
CIPR/IPL Lab Coordinator


Newsgroups: sci.image.processing
From: prasad@m.cs.uiuc.edu (Ganesh K)
Subject: CCITT standard image
Organization: University of Illinois, Dept. of Comp. Sci., Urbana, IL
Date: Tue, 8 Sep 1992 22:30:35 GMT

	I would like to have the 8 standard CCITT test documents
	used to evaluate the performance of image compression algotrithms.

	I would appreciate if anybody would let me know where can I get them
	from ???

		--ganesh

Newsgroups: sci.image.processing
From: hsu@dcs.warwick.ac.uk (Hsu Tao-I)
Newsgroups: sci.image.processing
Subject: Access Brodatz's Photo Album
Date: 9 Sep 92 08:32:59 GMT
Organization: Department of Computer Science, Warwick University, England

Hi there,
   I am working on the structured texture image analysis. Is there anyone 
outside there knows where and how to access these images in P. Brodatz's 
"Photo Album"? 

   Please email me. Many thanks to you!
Newsgroups: sci.image.processing
Subject: Re: CCITT standard image
From: estes@azalea.eecs.ucdavis.edu (Robert Estes)
Date: 11 Sep 92 09:20:23 GMT
Organization: University of California at Davis
In-reply-to: prasad@m.cs.uiuc.edu's message of 8 Sep 92 22:30:35 GMT

Hi,

This question comes up about once a month, so instead of replying to you
personally, I will post this response.  Maybe someone can incorporate it into
and appropriate faqs...

With Rodney's help at RPI, I transferred the ccitt files to the image archive
there, in sun raster format - it should be easy to convert them to other
formats.

The location is:

ftp.ipl.rpi.edu:/image-archive/bitmap/ccitt

Hope this helps.

-R
--
Robert estes@eecs.ucdavis.edu

Center for Image Processing and Integrated Computing (CIPIC)
University of California, Davis
Davis, California 95616
Phone: (916) 753-6430
Newsgroups: sci.image.processing
From: peter@mitre.org (Peter J. Spellman)
Subject: Re: availability of lowtran 7?
Organization: The MITRE Corporation, Bedford, MA.
	<18qbprINNdvc@matt.ksu.ksu.edu> <ELLIS.92Sep11124704@msl475a.erim.org>
Date: Mon, 14 Sep 1992 17:26:15 GMT


LOWTRAN7 and MODTRAN can be acquired from:

National Climatic Data Center
Environmental Data Services
Federal Building
Asheville, NC 28801
(704) 259-0682

For fastest response cal them.  The cost is something on the order of
$150 and can be paid using a major credit card.  They customarily ship
it on 9 track tapes; I don't believe it is ftp-able.

-Peter
From: ericj@hwcae.Honeywell.COM (Eric Jacobsen)
Newsgroups: sci.image.processing
Subject: Re: intravascular ultrasound
Date: 8 Sep 92 19:50:03 GMT
Organization: Honeywell, Air Transport Division; Phoenix, AZ

In article <1992Sep8.175626.12531@u.washington.edu> coral@milton.u.washington.edu (Coral Bernier) writes:

   These images highly resemble radar images and I would also appreciate
   receiving any information on how antenna beam patterns are used in 
   image processing.

Check out anything on Synthetic Aperture Radar, which uses the doppler
phase history of a target moving laterally through the beam to
synthetically sharpen the beamwidth (dramatically).

--
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
* Eric Jacobsen        Honeywell Inc.                           *
|     1-602-436-3941   Commercial Flight Systems, Air Transport |
* HVN       436-3941   US Mail: P.O. Box 21111, MS 2Q34C1       *
| FAX 1-602-436-1310   Phoenix AZ 85036-1111                    |
* INet: ericj@hwcae.honeywell.com                               *
| UUCP: uunet!hwcae.honeywell.com!ericj@uunet.uu.net            |
* The opinions expressed are my own and therefore better        *
| thought out than my employer's.                               |
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
Newsgroups: sci.image.processing
From: mlelstv@specklec.mpifr-bonn.mpg.de (Michael van Elst)
Subject: Re: ccd camera
Organization: Max-Planck-Institut f"ur Radioastronomie
Date: Mon, 7 Sep 1992 15:05:06 GMT

In <jecome01.715798061@starbase.spd.louisville.edu> jecome01@rigel.spd.louisville.edu (Eric Comer) writes:
>	if the lens caps is place on a ccd camera and an image is capture,
>	why aren't all of the pixel values 0 (black)?  when the image is
>	normalized it seems like there are faint light diagonal lines
>	throughtout the whole image.  the image acquired was a gray scale
>	image the min value was 0 and the max value was 6.  any ideas?

Well, two things. The CCD doesn't need to give you a value of 0 without
light. This depends on the offset and gain of the video amplifier. Second,
your system obviously catches some periodic stray signal. If you know
your pixel rate then you can translate the number of pixels into the
offending frequency in the time domain. Most likely this will be a 60Hz
noise signal.

Regards,
-- 
Michael van Elst
UUCP:     universe!local-cluster!milky-way!sol!earth!uunet!unido!mpirbn!p554mve
Internet: p554mve@mpirbn.mpifr-bonn.mpg.de
                                "A potential Snark may lurk in every tree."
Newsgroups: sci.image.processing
From: ellis@msl475a.erim.org (Ken Ellis)
Subject: Re: availability of lowtran 7?
In-reply-to: henebry@matt.ksu.ksu.edu's message of 11 Sep 1992 09:51:39 -0500
Organization: Environmental Research Institute of Michigan, Ann Arbor, Michigan
	<18qbprINNdvc@matt.ksu.ksu.edu>
Date: 11 Sep 92 12:47:04


Have you tried contacting the code's developer, F. Kneizys? He is at
the Air Force Geophysics Lab, Hanscom AFB, Lexington, Mass.

-Ken
--
_____
\                                      |  Opinions expressed here are solely
 \   ERIM   Ken Ellis                  |  those of the author and do not
 /          ellis@erim.org             |  necessarily represent those of 
/____|                                 |  his employer.
From: helz@ecn.purdue.edu (Randall A Helzerman)
Newsgroups: sci.image.processing
Subject: Infrared Camera
Date: 10 Sep 92 19:18:17 GMT
Distribution: usa
Organization: Purdue University Engineering Computer Network

I would like to do some signal processing of infrared images 
of the human body.  However, I'm having a very hard time finding a
supplier of inexpensive ($1,000 or so) cameras.

Does anyone "out there" know where I can buy one with NTSC output
somewhere around my target price?

Thanks so much for any info you can give me.
Newsgroups: sci.image.processing
From: glover@elec.uq.oz.au (Stuart Glover)
Subject: Digital Image Warping - CODE
Organization: Prentice Centre, University of Queensland
Date: Thu, 10 Sep 1992 03:39:03 GMT

Hi,
   I have just read George Wolbergs book on Digital Image Warping
and am interested in implementing some of the code.   In particular
I would like to use the two pass mesh warp code on pp238 - 240,
however I can't get it to work properly.  When I pass it through
with a mesh that maps the input points directly on to the same
output points, it warps the top part of the image.  It also gives
lines down the right hand side of the image.  Also if I change the
mesh, there is no noticeable difference. Has anybody had these
problems or have I made a mistake in transcribing the code? I fixed
up some obvious bugs (well i hope they are bugs anyway) but don't 
know if there are there any more.  Has anyone actually used this
code and got it working?  If so could they email me with the corrected 
code or the corrections. Any help would be greatly appreciated.

Stuart Glover.
--

___________________________________________________________________________
Stuart Glover - glover@s1.elec.uq.oz.au 
                                        
Dept. Electrical Engineering            
University of Queensland                
BRISBANE 4072                           
Australia                               
                                        
tel: (07) 365 3864
From: tmb@arolla.idiap.ch (Thomas M. Breuel)
Newsgroups: sci.image.processing
Subject: Re: 2d dft phase info
Date: 7 Sep 92 19:34:47 GMT
	<1992Sep7.110102.25536@bnr.co.uk>
Reply-To: tmb@idiap.ch
Organization: IDIAP (Institut Dalle Molle d'Intelligence Artificielle
	Perceptive)
In-reply-to: pgh@bnr.co.uk's message of 7 Sep 92 11:01:02 GMT

In article <1992Sep7.110102.25536@bnr.co.uk> pgh@bnr.co.uk (Peter Hamer) writes:

   In the referenced article spz@specklec.mpifr-bonn.mpg.de (S.P.Zeidler) writes:
   >In <9209011949.AA19843@hp-and.an.hp.com> susanm@hp-and.an.hp.com (Susan Margulies) writes:
   >One thing that you might want to take into account is that the Fourier
   >transform of an ordinary image is hermitic, ie if you do a transform
   >AxB real image -> AxB complex Fourier transform, you got quite some
   >redundancies.

To be precise, half of your transform is redundant. If you pack things
carefully, you can even transform an N x M real array into an N/2 x M
complex array. If you are less aggressive in packing and waste a
little space, you can trivially get an (N+2)/2 x (M+2) complex output
array for your N x M real input.

   Serious question: so why not use the Hartley transform which does not
   introduce these redundancies in the first place?

I have tried both. It's relatively easy not to generate the half of
the Fourier transform that you don't need, and the result is the
familar and easy to use complex representation. It's messy and error
prone trying to rewrite the simple formulas (e.g., for filtering) in
the Fourier domain for the Hartley transform, and, as far as I can
tell, the result isn't any faster (if anything, it's likely to be
slower because you need more array indexing).

   >Doing instead AxB image -> -(A/2+1)xB phase and (A/2+1)xB modulus
   >will give you a nicely viewable (and displayable) Fourier transform.

   ... or use your favourite Fourier package and display the Hartley transform?

If you look at the Hartley transform of an image, you are looking at
both phase and magnitude information, interwoven in some visually
complicated way. The nice thing about the Fourier transform is the
separation into phase and magnitude.

   Regards, Peter

   PS The Hartley transform can be regarded as a `tidier' Fourier transform.

      a) Uses cos(x)+sin(x) rather than cos(x)+i*sin(x).
      b) The inverse is the same operation as the transform.
      c) Takes real => real.
      d) Does not introduce redundancies into the representation.
      e) Even clearer relationship to the sine and cosine transforms.

It looks neat on paper, but I don't think it's tidier in practice.

      d) Easy to convert between Hartley and Fourier transforms.

If you are going to compute the FHT and then reconstitute Fourier
coefficients (or phase/magnitude information) from the result, you are
probably better off using the Fourier transform in the first place.

					Thomas.
Newsgroups: sci.image.processing
From: meek@fizzy.csu.murdoch.edu.au (Lindsay Meek)
Subject: Canon PHF6 1.2EA lens distortion?
Summary: Looking for optical correction data
Keywords: Optical lens distortion correction
Organization: Murdoch University
Date:  8 Sep 92 05:40:24 GMT

Hello,
	I have recently purchased a canon PHF6 1.2EA lens and a panasonic
6.4 x 4.8mm CCD camera. I was wondering whether anybody has measured the
distortion from the lens and has derived some correction polynomials for it.
I am going to do this myself in about 3 months time (provided nobody else
has) and will post the results...

some identifying specs on the lens:
	6mm focal length 
	56 degree F.o.view
	auto iris
Thanks,
	Lindsay Meek

Newsgroups: sci.image.processing,comp.graphics,rec.arts.fine
From: IMAGING.CLUB@OFFICE.WANG.COM ("Imaging Club")
Subject: Economist article on art museum imaging
Organization: Mail to News Gateway at Wang Labs
Date: 09 Sep 92 22:44:03 EST

I have now sent copies of that new Economist article on art museum
imaging to everyone who requested one.  Sorry for the delay.  I was on
vacation and, in addition, our Internet/Usenet connection was down
for a while.  If anyone was not able to get through to me, I'll be
happy to send him a copy too!

Michael.Willett@OFFICE.Wang.com
From: smith@mcclb0.med.nyu.edu
Newsgroups: sci.image.processing
Subject: Favorite FFTs (was 'Re: 2d dft phase info')
Date: 9 Sep 92 13:36:21 GMT
Organization: NYU Medical Center, New York, NY 10016, USA

> 
> My favourite Fourier transform package is a Radix-8 FFT that does
> 512x512 float -> 256x512 complex in 4.3 sec on a DECStation 5000/200,
> and was written by myself (that's why it is my favourite ;-), and
> doesn't contain a Hartley transform.

Now that we are on to 'favourite FFTs', mine is Lynn ten Eykes multi-radix FFT
which does FFTs of any sized multi-dimensioned array with dimensions that have 
prime factors less than 49 (X must be even, however) the output of a 200x200 
array of reals is 101x200 complex.  It is very fast, due to special code to 
handle factors of 2,3,4,5 & 8, in addition to the primes to 49.  We have 
ported it to IBM, VMS, Ultix and UNICOS (Cray).  Its good... (less than 3 
secs for 512x512 reals on a DECstation 5000/240)

+----------------------------------------------------------------------------+
|Ross Smith,  Research Computing Resource, Department of Cell Biology, NYU-MC|
|550 First Ave., NYC, 10016-6402.  Phone: (212) 263-5356: FAX: (212) 263-8139|
|E-Mail:  SMITH@NYUMED.BITNET (BITNET),   SMITH@MCCLB0.MED.NYU.EDU (Internet)|
+----------------------------------------------------------------------------+
Newsgroups: sci.image.processing
From: chanc@eecs.nwu.edu (Chuck Chan)
Subject: Re: SOFTWARE FOR PRINTING IMAGES ON LASER PRINTERS
Organization: EECS Department, Northwestern University
Date: Mon, 14 Sep 1992 17:29:10 GMT

If the image is stored in one of the many formats that 'xv' recognizes,
then you can just call up the image using 'xv' and resave the image using
the postscript option in 'xv'.  Then print this image to a postscript
printer using lpr

If the image is a raw image, I find the following set of commands useful:

	raw2fbm -w(width in pixels) -h(height in pixels) <image> image.fbm
	fbps -w(width in inches on paper) <image.fbm> image.ps

Then print out image.ps to the laser printer using lpr

Hope this helps

Cheuk
From: henebry@matt.ksu.ksu.edu (Geoffrey M Henebry)
Newsgroups: sci.image.processing
Subject: Re: availability of lowtran 7?
Date: 11 Sep 1992 09:51:39 -0500
Organization: Kansas State University
NNTP-Posting-Host: matt.ksu.ksu.edu
Keywords: remote sensing, radiometric correction

herman@nosc.mil (John W. Herman) writes:

>>greetings!  does anyone have a lead on the availability of lowtran 7 over the
>>net?  many thanks! -- g. henebry aka henebry@matt.ksu.edu

>Isn't LOWTRAN a commercial product?

i know that there is at least one commercial implementation of LOWTRAN but i
thought that the code was developed by the feds and so should be pd, similar
to the situation with the GIS GRASS.  any pointers would be helpful. thanks.
Newsgroups: sci.cognitive
From: mgreen@cs.toronto.edu (Marc Green)
Subject: re: Dual Visual Pathway: Current Status
Organization: Department of Computer Science, University of Toronto
Date: 10 Sep 92 15:39:59 GMT


>From: laborel@zig.inria.fr (Louis Laborelli)

>I would like to know if the subject of existence 
>of a dual pathway for object recognition and spatial localization 
>in human extrastriate cortex is a well affirmed  fact. 
>Is anybody aware of papers against this hypothesis ?
>Thanks in advance.

For arguments against the separation of location and recognition, you
might check out M. Green, Visual Search, Visual Streams and Visual
Architectures, Perception & Psychophysics, October, 1991.

M. Green
Trent University
From: erwin@trwacs.fp.trw.com (Harry Erwin)
Newsgroups: sci.cognitive
Subject: Vision
Date: 11 Sep 92 14:32:12 GMT
Organization: TRW Systems Division, Fairfax VA


schuette@wl.com (Wade Schuette) writes:

>In article <28933@sophia.inria.fr> laborel@zig.inria.fr (Louis Laborelli) writes:
>>I would like to know if the subject of existence 
>>of a dual pathway for object recognition and spatial localization 
>>in human extrastriate cortex is a well affirmed  fact. 
>>Is anybody aware of papers against this hypothesis ?
>>Thanks in advance.
>>-- 
>> Louis Laborelli

>I don't know about the cortex, but I've seen some papers on image 
>analysis (by computers) and various algorithms/filters which seem
>to imply that recognition, localization, and/or velocity determination
>are all quite separable activities -- ie, you can determine velocity 
>of an object in a series of images without having to recognize it or
>even localize it. (!) FWIW.

>Wade




I believe this is the currently evolving consensus, but there are some
results from wavelet theory that need to be factored in. These results
imply that the separation cannot be by an algorithm that is equivalent to
projection into linearly independent subspaces. There are also problems
associated with the specific selection of the subspaces. See the recent
issue of the IEEE Trans Inf Theory (V36, #5, 1990).

Cheers,
-- 
Harry Erwin
Internet: erwin@trwacs.fp.trw.com

Newsgroups: sci.cognitive
From: ffhoust@eos.ncsu.edu (FORREST FRANCI HOUSTON)
Subject: Has anyone heard of this?
Organization: North Carolina State University
Date: Fri, 11 Sep 1992 21:04:00 GMT

 am starting a research project/experiment for a class which involves
taking recorded speech, both machine and human produced, and inserting
gaps into the voiceprint.  The best analogy I've heard is listening to
the radio while someone keeps changing the volume from 0 to some set
level.  I was wondering if anyone out there has done, is doing, or has
heard of similar research.  I have found something similar in an
experiment conducted by George A. Miller, but that was back in the 50's.
Has anything been done like this more recently?  Please e-mail me as I
do not always have time to read this group.

Thanks in advance
Forrest
ffhoust@eos.ncsu.edu

Newsgroups: sci.cognitive
From: schuette@wl.com (Wade Schuette)
Subject: Re: Dual Visual Pathway : Current status ?
Organization: Warner Lambert / Parke-Davis
Date: Thu, 10 Sep 1992 14:40:09 GMT

In article <28933@sophia.inria.fr> laborel@zig.inria.fr (Louis Laborelli) writes:
>I would like to know if the subject of existence 
>of a dual pathway for object recognition and spatial localization 
>in human extrastriate cortex is a well affirmed  fact. 
>Is anybody aware of papers against this hypothesis ?
>Thanks in advance.
>-- 
> Louis Laborelli

I don't know about the cortex, but I've seen some papers on image 
analysis (by computers) and various algorithms/filters which seem
to imply that recognition, localization, and/or velocity determination
are all quite separable activities -- ie, you can determine velocity 
of an object in a series of images without having to recognize it or
even localize it. (!) FWIW.

Wade



-- 
====================================================================
R. Wade Schuette     |  All opinions expressed are personal.| B>   |
Ann Arbor, MI USA    |                                      |   :) |
schuette@wl.com      |   *** "Synergize Scientists!"  ***   | B>   |
From: dubuf@sicsun.epfl.ch (Hans DU BUF)
Newsgroups: sci.cognitive
Subject: Re: Dual Visual Pathway : Current status ?
Date: 10 Sep 92 11:28:18 GMT
Organization: Ecole Polytechnique Federale de Lausanne

In article <28933@sophia.inria.fr>, laborel@zig.inria.fr (Louis Laborelli) writes:
|> I would like to know if the subject of existence 
|> of a dual pathway for object recognition and spatial localization 
|> in human extrastriate cortex is a well affirmed  fact. 
|> Is anybody aware of papers against this hypothesis ?
|> Thanks in advance.
|> -- 
|>  Louis Laborelli
|>  Universite de Nice Sophia Antipolis

??? What do you mean by a dual pathway for object recognition and spatial
localization.
At the ECVP, held last week in Pisa, Prof. M. Mishkin gave an overview
of parallel pathways for memory and learning, and showed that shortcuts
which bypass normal pathways, ie link low and high level representations,
can play a very important role.
This is not my specialty, contact M. Mishkin, Neurophysiology Lab,
NIMH, Building 9, Bethesda 20892, USA.
Please let me know what you learn.

Hans du Buf
Signal Processing Lab
Swiss Federal Inst of Technology
CH-1015 Lausanne
Switzerland

Xref: sparky sci.cognitive:397 comp.ai.philosophy:5995