HDTenEightyP/NetNews huggingface dataset:
From: sarfatti@well.sf.ca.us (Jack Sarfatti)
Subject: Wavlets, coherent states 6
Organization: Whole Earth 'Lectronic Link
Date: Sat, 9 Jan 1993 06:56:46 GMT


6. Kaiser supplies an algorithm for computing G^-1:
recall that

AI<=G<=BI           (33)

G^-1 = (2/B+A)S(k=0 to inf)[I - (2/B+A)]^k    (34)  (p.26)

& =(B - A)/(B + A)     (35)

for a tight frame & = 0,

(2/B+A)G = I  (36)

G^-1 = (2/B+A)  (37)

in this special case of the tight frame, the consistency condition is

g(m) = (2/B+A)Integral[du(m')<m|m'>g(m')   (38)

the reconstruction formula is

|f> = G^-1T*|g>

= (2/B+A)Integral[du(m)|m>g(m)]   (38)

recall that

f(z) = <z|f>  (39)

so we can rewrite (38) as

|f> = (2/B+A)Integral[du(m)|m><m|g>]  (38')

unless I am confused - which I might be.

If 0 < & << 1, the frame is called snug and the above formulae for tight
frames are the first terms in a series expansion. It appears to be an
advantage to have maximal linear dependence which is impossible for
ordinary bases.

*Recall that the apparent fly in the ointment in the quantum connection
communicator is the linear independence of the two kets representing the
two alternative paths of the transmitter photon!  If the two kets are
orthogonal they are linearly independent.*

f(m) = <m|f> is "over-sampled". A good measure of the amount of linear
dependence among the |m> is the size of the orthogonal complement of the
range of T which is the null space N(T*) of T* (p.27).

f = G^-1T*g  (40)

g = g1 + g2  (41)

this is an orthogonal decomposition with g2 in N(T*). The error g2 has a
minimal norm "in a least squares approximation f to a reconstruction".

The usual argument in favor of using bases rather than overcomplete sets of
vectors is that one desires a unique representation of functions as linear
combinations of basis elements. When a frame is not a basis, i.e., when the
frame vectors are linearly dependent, this uniqueness is indeed lost since
we may add an arbitrary function e(m) (from the null space of T*) to f in
the reconstruction formula. However, there is still a unique admissible
coefficient function that satisfied the consistency condition.

*This is beginning to sound like gauge symmetry?*

to be continued
Newsgroups: sci.physics,news.groups
From: jbaez@riesz.mit.edu (John C. Baez)
Subject: Re: sci.physics.research: Are there important unresolved issues?
Organization: MIT Department of Mathematics, Cambridge, MA
Date: Mon, 11 Jan 93 21:53:27 GMT

Leigh Palmer writes:

>I'd like to see one more credential, however, before I lend my
>unquestioning support to these estimable gentlemen. I'd like each to
>publish his killfile (if he has one). While I will not volunteer to
>moderate (I'm an immoderate type by nature), I will tell you that I do
>not have a killfile, but I read selectively, choosing articles from a
>menu like a table of contents, in a newsreader which runs on a
>Macintosh.

Here is my killfile:





(That is, I don't have one.  I don't read every article; I skim lots,
and when I get seriously bored or annoyed I hit "k" to wipe out a day's
worth of a particular thread, but I find killfiles to be too crude a filter.)

Newsgroups: sci.physics
From: buhr@umanitoba.ca (Kevin Andrew Buhr)
Subject: TIME HAS INERTIA   KEVIN asks "don't you PEOPLE get IT?"
Organization: University of Manitoba, Canada
Date: Fri, 8 Jan 1993 20:02:24 GMT

Am I the only ONE to whom it is CLEAR that (K1) is TRUE?

(K1)	ABIAN is JOKING

Kevin BUHR <buhr@ccu.UManitoba.CA>
Newsgroups: sci.physics
From: atems@igor.physics.wayne.edu (Dale Atems)
Subject: Re: The instantaneous transfer of information in QM calculations
Organization: Wayne State University, Detroit, MI
Date: Sun, 10 Jan 1993 16:40:16 GMT

In article <481@mtnmath.UUCP> paul@mtnmath.UUCP (Paul Budnik) writes:
>
>The only way to reproduce the predictions of QM is to reduce the wave
>function as a result of a detection at one site. This *instantaneously*
>alters the singlet state wave function for both particles throughout all space
>and transfers the information about the polarizer where the reduction was
>assumed to occur to the distant detector. (Note I am only talking about how
>one does the calculation. I am making no assumptions about what is `really
>happening'.)  One then uses this `reduced wave function' at the other site
>to compute the probability of a detection there. As long as the polarizers
>are not changing this calculation is straight forward and produces the
>standard quantum mechanical predictions.

What do you mean by "reproduce"? In discussions of Bell's inequalities
this word usually applies to hidden-variables theories making the same
statistical predictions as QM. It sounds as if you are saying that even
within QM, you cannot predict the correlations without making use of wave
function collapse. Is there something special about the photon case here?
This is certainly not true of the spin-1/2 analog. I can do that
calculation using only the "linear" part of QM, and the prediction is
valid as interaction with Stern-Gerlach magnets does not affect the
spin part of the wave function. The predicted correlations depend only
on the singlet state wave function before detection; what happens to the
wave function as a result of detection is not relevant.

------
Dale Atems
Wayne State University, Detroit, MI
Department of Physics and Astronomy
atems@igor.physics.wayne.edu
From: gjm11@cus.cam.ac.uk (G.J. McCaughan)
Newsgroups: sci.physics
Subject: Re: TIME HAS INERTIA - GOEDEL's THEOREMS - att: Dr.PRATT, Mc CULLOUGH
Date: 11 Jan 93 17:34:05 GMT
Organization: U of Cambridge, England

Is this the crystal-clear explanation of Godel's Theorem you promised?
If so, I'm disappointed: I was expecting an explanation not of the (easy)
statement of the theorem but of the (less easy) proof of the theorem.

I don't know any way of proving Godel's Theorem that doesn't require quite
a bit of technical muchking around. (Or else a lot of non-rigorous handwaving,
of course; but one can prove anything given sufficient willingness to wave
one's hands.)

-- 
Gareth McCaughan     Dept. of Pure Mathematics & Mathematical Statistics,
gjm11@cus.cam.ac.uk  Cambridge University, England.    [Research student]
From: mark@strider.tfo.arizona.edu (Mark W. Bultman)
Newsgroups: sci.image.processing
Subject: Fast MM
Date: 8 Jan 93 16:19:03 GMT
Organization: tfo

John Handley writes:

>For a fast version of the hit-or-miss transform (hence erosions,
>dilations, etc), check out
>"Methods for Fast Morphological Image Transforms Using Bitmapped
>  Binary Images" in CVGIP: Graphical Models and Image Processing,
> Vol. 54, No. 3, May, pp. 252-258, 1992.
>
> They provide pseudocode (there are two small mistakes) which is
> easy to code-up. 
> 
>John
>
>John Handley                           jch3254@ultb.isc.rit.edu
>Center for Imaging Science    Rochester Institute of Technology
>

In addition to this:
"A Fast and Accurate Erosion-Dilitation Method Suitable for 
Microcomptuers" by Sterling J. Crabtree, Jr., Li-Ping Tuan, and
Robert Ehrlich can be found in:


CVGIP: Graphical Models and Image Processing,  Vol. 53, No. 3, May,
 pp. 283-290, 1991

I do not know if the more recent paper is an extension of this previous
paper or not.

Mark W. Bultman
From: changed@nima.berkeley.edu (Chang... Ed Chang.)
Newsgroups: sci.image.processing
Subject: Re: Big RGB <-: CMY Problem
Date: 7 Jan 1993 23:15:24 GMT
Organization: U.C. Berkeley -- ERL
NNTP-Posting-Host: nima.berkeley.edu

In article <1993Jan8.110908.484@otago.ac.nz> athomson@otago.ac.nz (Alastair Thomson) writes:
>In article <C0HM2E.Grx@cs.dal.ca>, legrady@ug.cs.dal.ca (Tom Legrady) writes:
>> 
>> If you have white light light and remove the red, you wind up with
>> cyan.  No two ways about it. Remove the green from white and the
>> remainder is magenta. Take out the blue and the result is yellow.
>
>The question here is what do you mean by "white light", or "green", do you mean
>the entire visible spectrum?, do you mean what you see as white on a CRT?, is
>green one wave length?, is green a range of wavelengths?, what range?  
>
>The real difficulty is that we are talking about the perception of colour, not
>some mathematical model of it. If the original poster could specifiy exactly
>why they want to do the conversion I may be able to help some more

"White light" is any spectrum that looks white to the human visual system.
This includes a flat spectrum among many other shapes.  Likewise, green
light can be monochromatic or consist of a spectrum with most of the
energy concentrated in the green wavelength band.

Since we're talking about the perception of color, the important thing
to remember is that (under the opponent-process theory) we have three
types of receptors (Red, Blue, Green), which are combined into three
opponent processes: Red-Green, Blue-Yellow, and Black-White.  So given
any light that looks white, if you remove a part of the spectra that
would look "greenish", the remainder will look "reddish".

Ed
Newsgroups: sci.image.processing
From: eschbach@abc.wrc.xerox.com (Reiner Eschbach)
Subject: Re: Sorting RGB Palette in Intensity Order.  Please Help !
Organization: Xerox
Date: Tue, 12 Jan 1993 13:16:16 GMT

In article <1993Jan9.134848.7175@mcclb0.med.nyu.edu> smith@mcclb0.med.nyu.edu writes:
>I sort first by min(r,g,b), then by saturation and then intensity.  The goal 
>(I assume) is to get a sorted set of indices that displays reasonably as B&W. 
>Intensity=(r+g+b)/3.

I would recommend Y = 0.253r + 0.684g + 0.0634b. Try to display
(r,g,b)=(0,0,127) and = (0,127,0) and tell me whether you think they have the
same intensity.
In general I would recommend to be careful if you have to make any color to
b&w conversions. HSV etc. do a very lousy job and one should stick to
something like YES, YIQ, YCC, XYZ for the intensity part ( those four color
spaces have the same Y component, although I am not absolutely certain for the
Kodak YCC )

Reiner

>+----------------------------------------------------------------------------+
>|Ross Smith,  Research Computing Resource, Department of Cell Biology, NYU-MC|
>|E-Mail:  SMITH@NYUMED.BITNET (BITNET),   SMITH@MCCLB0.MED.NYU.EDU (Internet)|
>+----------------------------------------------------------------------------+
From: mark@sunrise.sli.unimelb.edu.au (Mark Shortis)
Newsgroups: sci.image.processing
Subject: Videometrics II CFP
Date: 11 Jan 1993 13:43:34 GMT
Organization: University of Melbourne, Dpt of Surveying and Land Information
Reply-To: mark@sunrise.UUCP (Mark Shortis)
NNTP-Posting-Host: sunrise.sli.unimelb.edu.au


**Announcement and Call for Papers  : Videometrics II**

7-10 September 1993
Hynes Convention Center, Boston, Massachusetts, USA

Videometrics II is part of SPIE's International Symposium on Optical
Tools for Manufacturing and Advanced Automation

The Symposium includes 28 Conferences on topics covering the above theme
including : sensor and controls for manufacturing, machine vision applications,
industrial optical sensing and metrology, optics, illumination and image
sensing for machine vision, and Videometrics.

The topics specifically covered by Videometrics II are the use of
computer vision techniques for dimensional metrology applications,
such as gauging, reverse engineering, accurate positioning, tracking,
and navigation of objects and robots.

Sessions will concentrate on the following areas, although papers on
other related topics are also encouraged :

* camera and system calibration
* robust algorithms and systems
* error sources and correction techniques
* target and edge measurement/digitizing to subpixel accuracy
* knowledge-based feature extraction and dimension measurement techniques
* surface object reconstruction and scene understanding
* accuracy and performance evaluation
* dynamic tracking in 3D
* successfully demonstrated system applications

Conference Chair : Sabry El-Hakim, NRC, Canada (elhakim@iit.nrc.ca)

Cochairs : Armin Gruen, ETH, Switzerland; Mark Shortis, University of
Melbourne, Australia; Walt Snow, NASA Langley, USA; Glen Southworth,
Colarado Video, USA; Kam Wong, University of Illinois, USA.

**Abstract due date : 8 February 1993**
** Manuscript due date : 9 August 1993**

Abstracts may be submitted to :

SPIE, P.O. Box 10, Bellingham, WA 98227-0010, USA
Facsimile : +1-206-647-1445
Email : abstracts@mom.spie.org  (send ASCII format text)

Four copies of the abstract must be submitted and should include the
following information :

Abstract title
Author and affiliation listing as they will appear in the program
Correspondence addresses of all authors
Conference title and chair
Preference for oral or poster presentation
Text of the abstract (500 words)
Biography of the principal author (50-100 words)

In view of the short time available until abstracts are due, you are
strongly encouraged to submit via fax or email!
____________________________________________________________________
Dr. Mark R. Shortis,                 Mark_Shortis@mac.unimelb.edu.au
Senior Lecturer,
Dept. of Surveying and Land Information,
University of Melbourne,                     Telephone +613 344 6401
Parkville 3052, AUSTRALIA.                   Facsimile +613 347 2916

"Against stupidity, the gods themselves contend in vain" : I. Asimov

Newsgroups: sci.image.processing
From: IMAGING.CLUB@OFFICE.WANG.COM ("Imaging Club")
Subject: Re: Need recommendation on form processing products
Organization: Mail to News Gateway at Wang Labs
Date: Mon, 11 Jan 1993 14:44:33 GMT

In France, there is a software Company : ITECA, who has a very good software
'FORMSCAN' for forms recognition.
ADRESS : ITECA
         Immeuble Alliance
         Parc G. Besse
         30000 NIMES
         FRANCE
         Tel (33) 66.29.00.92
         Fax (33) 66.29.02.37

   Contact : Mr CARPENTIER

  Best regards,
           MLV

-------------------------------- Original Memo --------------------------------
B:       Marie-Laure Victoor            De  :      Imaging Club
Objet  : EDS wants to scan forms-?      Date envoi:04/01/93

sci.image.processing, Dec 25, 1992
From: maa@edsdrd.eds.com (Matthew Maa)
Subject: Need recommendation on form processing products
Organization: Michigan State University Department of Mathematics
NNTP-Posting-Host: maths7.mth.msu.edu

Has anyone reading this newsgroup had experience with
a product "FormRight", version 1.1 from the OCR Systems,
Inc?

Or has anyone used any product that does form registartion,
registering scanned forms into a form repository?  Or even
any company or product name that will do certain type of
form processing.  For forms we mean the scanned paper forms,
not electronic forms.

Thanks in advance for your information.

Matthew Maa
EDS Detroit R&D
maa@edsdrd.eds.com
From: jwu@cs.ubc.ca (Joseph Wu)
Newsgroups: sci.image.processing
Subject: Re: Big RGB <-: CMY Problem
Date: 5 Jan 1993 10:55:26 -0800
Organization: Computer Science, University of B.C., Vancouver, B.C., Canada
NNTP-Posting-Host: cascade.cs.ubc.ca

salewski@tnt.uni-hannover.de (Carsten Salewski) writes:

:In article 1522@tom.rz.uni-passau.de, friedric@diogenes.uni-passau.de (Carsten Friedrich) writes:

:>
:>I have a big problem converting colors from cmy to rgb and vice versa.
:>The usual aproach, to just invert the components seems to be incorrect.
:>
:(...)
:>
:>carsten

:Did you try this:

:	R = V/cv + Y
:	B = U/cu + Y
:	G = (Y - 0.299 R - 0.114 B) / 0.587

:Probably you forgot these constants cv = 0.493 and cu = 0.877.

:Reference:

:"Fernsehtechnik; Bd. 2: Systeme und Komponenten zur Farbbilduebertragung",
: Broder Wendland, Hartmut Schroeder, Huethig Buch Verlag Heidelberg.
: pages 51-53.

:Carsten Salewski

:email: salewski@helios.tnt.uni-hannover.de

I don't know what you are trying to convert here, but it is definitely
not CMY to RGB. I don't know what problems Mr. Friedrich is having, but
the way that he mentioned is the correct one i.e. inverting the components

	[ R, G, B ] = [ 1, 1, 1 ] - [ C, M, Y ].

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Joseph Wu    <jwu@cs.ubc.ca>   | Witty quote is now back to the
Master's Candidate             |   drawing board due to squeamish
University of British Columbia |   readers. Any suggestions?
Newsgroups: sci.image.processing,comp.graphics
From: cristja1@netnews.jhuapl.edu (John A. Cristion)
Subject: Re: Math Packages for Image Processing & generation
Organization: JHU/Applied Physics Laboratory
Date: Tue, 5 Jan 1993 20:27:44 GMT

venkat@ra.csc.ti.com (Venkat Venkateswar) writes:

>What is a good scientific math package for quick simulations of 
>image processing and Image generation (dithering, error-diffusion, etc)
>algorithms? I am familiar with MatLab, but am wondering if there are
>better packages for the above tasks.


>Venkat

Have you looked at PV-Wave.  It runs on Sun and Vax systems.
So far, I have found it to be more useful than MATLAB (although
I am a extensive MATLAB user also) for image processing.  MATLAB 4.0
looks like it may also be better at these functions, but we don't 
have it installed yet.

	Good luck, John.
-- 
    	John A. Cristion
	cristja1@aplcomm.jhuapl.edu
	The Johns Hopkins University/Applied Physics Laboratory
	Johns Hopkins Rd., Laurel, MD 20723
From: honig@ruffles.ics.uci.edu (David A. Honig)
Subject: Re: No Subject
Newsgroups: sci.image.processing
Reply-To: honig@ics.uci.edu (David A. Honig)
Organization: UC Disneyland, in the Kingdom of Bren
Date: 12 Jan 93 04:55:47 GMT

 spl@ivem.ucsd.edu (Steve Lamont) writes:
>In article <C0ozIH.AMJ@compsci.liverpool.ac.uk> chris47@uxb.liv.ac.uk (Chris Brown ) writes:
>>Well you could help me by finding a method to automatically edge detect
>>the cardiac shadow on cardio angiograms
>
>Well, I suppose I could. :-)
>
>There are a number of edge detection algorithms.  The usually involve
...description of Sobel filter omitted...

In the cardiac shadow domain, you could exploit:
* the fact that the edge is moving, so you can use motion-enhanching
techniques like image differencing
* the fact that the edge has a roughly known shape, ie, a long slowly
curving arc, which can be exploited to generate better matched filters

The more you know about what you're looking at, the better you can be
at detecting it.  If you know that its motion is smooth, you can exploit
this better.

Check out the books recommended, and if your budget allows hire an EE type who knows how to code, or a CS type who knows somthing about image processing.

--
David Honig

"Q: What does a C programmer say to an Ada(tm) programmer?
 A: I'll have a burger and fries, no onions."
From: itthi@sunburn.sli.unimelb.edu.au (Itthi Trisirisatayawong)
Newsgroups: sci.image.processing
Subject: Mathematical Morphology
Date: 6 Jan 1993 04:46:23 GMT
Organization: University of Melbourne, Dpt of Surveying and Land Information
Distribution: world
Reply-To: itthi@sunburn.UUCP (Itthi Trisirisatayawong)
NNTP-Posting-Host: sunburn.sli.unimelb.edu.au

Hi there,

Could anybody please tell me about good introductory books or articles in
mathematical morphology. Information of its applications in image analysis,
and softwares would also be much appreciated. Please reply to

itthi@sunburn.sli.unimelb.edu.au

Thank you.
Itthi
From: slss6@cc.usu.edu
Newsgroups: sci.image.processing
Subject: Standard of future image data compression
Date: 5 Jan 93 21:46:34 MDT
Organization: Utah State University
From: gt2534c@prism.gatech.EDU (Toshiro Kubota)
Newsgroups: sci.image.processing
Subject: Info on FFT systems
Date: 4 Jan 93 21:12:54 GMT
Organization: Georgia Institute of Technology


I need to do some survey on FFT systems which implement FFT in parallel
with probably a lot of VLSI components.  I'd like to ask for any 
pointers to this subject.
My primary interest is 2D FFT, however info on any other kinds of FFT 
is very helpful.  

Thank you very much in advance.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|  Toshiro Kubota                                                     |
|  Computer Engineering Research Lab               \\|||//  Skidgodt! |
|  School of Electrical Engineering                ~---- ~  \!/       |
|  Georgia Institute of Technology                 | o o |   c        |
|  Phone:    (404) 894-2506                        |  p  |  c         |
|  Internet: toshiro@cerl.gatech.edu                \ = /  c          |
|                                                   ccccccc           |
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-- 
KUBOTA,TOSHIRO
Georgia Institute of Technology, Atlanta Georgia, 30332
uucp:     ...!{allegra,amd,hplabs,ut-ngp}!gatech!prism!gt2534c
Internet: gt2534c@prism.gatech.edu
From: spl@szechuan.ucsd.edu (Steve Lamont)
Newsgroups: sci.image.processing
Subject: Re: Big RGB <-> CMY Problem
Date: 4 Jan 1993 14:50:37 GMT
Organization: University of Calif., San Diego/Microscopy and Imaging Resource
NNTP-Posting-Host: szechuan.ucsd.edu
Keywords: rgb, cmy

In article <1993Jan4.134820.1522@tom.rz.uni-passau.de> friedric@diogenes.uni-passau.de (Carsten Friedrich) writes:
>I have a big problem converting colors from cmy to rgb and vice versa.
>The usual aproach, to just invert the components seems to be incorrect.

I think it's more a problem of media than the algorithm.

There's a lengthy discussion of color theory in Foley, van Dam,
Feiner, and Hughes, _Computer Graphics: Principles and Practice,
Second Edition_.  You might also want to look at a recent (within the
last couple of years) issue of the ACM publication Transactions of
Graphics.  There was an excellent treatment of the whole subject of
differences between kinds of media and their effects on color.
(Sorry, my copy seems to have evaporated from my shelf, so I can't
give an exact reference -- the cover had a computer generated wine
glass on it, though.  Perhaps someone with better control over their
library can fill you in.)

Finally, if you have a Macintosh, you might try fishing up the San
Diego Supercomputer Center's color theory tutorial software.  Holliday
Horton did an excellent job on it.  It lives at the sdsc.edu
(132.249.20.22) anonymous FTP site in
PUB$:[ANONYMOUS.SDSCPUB.APPLEMAC.GRAPHICS] (yeah, sdsc.edu is a VMS
VAX), and is called INTERACTIVE_COLOR.  It is in both StuffIt and
BinHexed StuffIt formats.

This should keep you amused for a while...

							spl
-- 
Steve Lamont, SciViGuy -- (619) 534-7968 -- spl@szechuan.ucsd.edu
UCSD Microscopy and Imaging Resource/UCSD Med School/La Jolla, CA 92093-0608
"Living alone is living in perpetual irony and thinking, more and more
frequently, Why not."   - Joyce Carol Oates, "The Boyfriend"
Newsgroups: sci.image.processing
From: txy3340@ultb.isc.rit.edu (T.X. Yuan)
Subject: wanted: Medical image(MRI,CT,X-ray..)
Originator: txy3340@ultb
Organization: Rochester Institute of Technology
Distribution: USA
Date: Mon, 11 Jan 1993 06:08:31 GMT

Does anybody know a good ftp site for these images?
I spend a long time in searching them,but no luck..
Any help will be greatly appreciated!!

txy3340@ultb.isc.rit.edu
Newsgroups: sci.image.processing
Subject: Re: Looking for e-mail addr. of Professor C.F. Nodine
From: broggi@verdi.cineca.it (Alberto Broggi)
Date: 12 Jan 93 10:28:29 +0100
Distribution: sci


	Try this:    telnet 128.138.243.151

	login as   netfind,
	
	and follow the help.


				Alberto
-- 
  Alberto Broggi    
  Dipartimento di Ingegneria dell'Informazione   phone: +39 (521) 905707
  Universita` degli Studi di Parma                 fax: +39 (521) 905723
  43100 Parma - Italy                    E-Mail broggi@aida.eng.unipr.it
Newsgroups: sci.image.processing