HDTenEightyP/NetNews huggingface dataset:
From: dominic@scooter.genie.uottawa.ca (Dominic Richens)
Subject: Re: Image processing package...
Followup-To: sci.image.processing
Originator: dominic@
Keywords: pbmplus
Reply-To: dominic@shamin.genie.uottawa.ca
Organization: MCRLab - University of Ottawa
Date: Mon, 27 Jul 92 17:25:16 GMT


In article <1992Jul24.113320.8898@uoft02.utoledo.edu>, jarney@jupiter.cse.utoledo.edu (jonathan arney) writes:
[...]
!    I am writing them to be used like normal DOS or UNIX command-line commands.
!   Why?  Because I want this package to be portable and GUI's are harder to 
!   port.
!    I also intend to make this package public domain, and anyone interested in
!   contributing to the project is welcome to do so and the company would be
!   most appreciated.
[...]
!   GIFTORAW infile outfile
!   RAWTOGIF infile outfile
!   HIST infile [outfile]	    
!   NEGATE infile [r] [g] [b] outfile
!   THRESH infile [r=x] [g=y] [b=z] outfile
!   BRIGHTEN infile [r=x] [g=y] [b=z] outfile
!   CONTRAST infile [r=x] [g=y] [b=z] outfile
!   ADD infile1 infile2 outfile
!   CALIBRATE dark light infile outfile
[...]
!   Once again, if you have any suggestions, questions, or help to give me, 
!   I would be delighted.

You might want to check out Jef Poskanzer pbmplus package which
already does all of what you describe.  It is command line oriented and
will build under just about any environment from DOS boxes to CRAYs.  Plus,
it is designed to be extensible, hence adding new algorithms is easy.

-- 
!@$^&*)($#$@!@#$^&*()_+_)(*&^$#@!$^&*()_+)(*&^$#@$^&*+_(*&^$#@#^&*()&*$#@(*&+_$!
 Dominic Richens  :  dominic@shamin.genie.uottawa.ca  :  Tel. (613) 564 9911 
      MCRLab, Dept of Elec Eng, University of Ottawa, K1N 6N5, CANADA   
"You construct intricate rituals which allow you to touch the skin of other men"
From: opus@pioneer.unm.edu (Colby Kraybill)
Newsgroups: sci.image.processing
Subject: Re: image restoration
Date: 24 Jul 92 19:29:16 GMT
Organization: Space and Planetary Image Facility

>In article 1@ntuvax.ntu.ac.sg, egntoh@ntuvax.ntu.ac.sg () writes:
>>I would like to hv information on image restoration in the area of
>>motion blurr and out_of_focus restoration. Could anyone comment on the
>>availability of good papers and software? By the way. is there any ftp
>>site providing softare or images on image restoration ?
>


imdisp for MSDOS systems is good at removing blur or motion distortion.

I generally use these commands to do it.

Command: enh baa 30
Command: enh med

The med enhancement will put some blur back into it, I do that to remove the 
jaggedness that the baalke enhancement creates.


Op jck


-- 
Colby Kraybill
Space and Planetary Image Facility
University of New Mexico
From: Timothy.Allen@dartmouth.edu (Timothy Allen)
Newsgroups: sci.image.processing
Subject: Re: SUMMARY: IMAGE PROCESSING SOFTWARE 1/2
Date: 27 Jul 92 14:47:30 GMT
Organization: Dartmouth College, Hanover, NH

In article <Bs0sGp.GLt@news.cso.uiuc.edu>
ritley@uimrl7.mrl.uiuc.edu () writes:

> I recently spotted a summary of image processing software
> which was posted to several newsgroups before, I believe,
> the sci.image.processing newsgroup was created.
> 
> Hopefully it will have some appeal to readers of this
> newsgroup.


Yes, it was posted before the sci.image.processing newsgroup was
created.  I have received much additional information since the summary
was first posted, and will be working on a updated version soon --
after I defend my dissertation.

--------------------------------------------------------------------
Tim Allen                                    tim.allen@dartmouth.edu
Earth Science Department
Dartmouth College
6105 Fairchild Hall, Hanover, NH 03755-3571
Newsgroups: sci.image.processing
From: rodney@magritte.ipl.rpi.edu (Rodney Peck II)
Subject: Re: Image library mailing list?
Organization: Rensselaer Polytechnic Institute, Troy, NY
Date: Wed, 22 Jul 1992 18:19:44 GMT

In article <148gp3INNrih@agate.berkeley.edu> dan@physics.Berkeley.EDU (Dan Ruderman) writes:
>
>	I heard a rumor that a mailing list about image libraries
>	exists.  Does anyone know more details?
>
>	Thanks,
>	Dan Ruderman
>
>

I recently made a mailing list for the discussion of development of a global
image archive of research quality imagery. 

To subscribe, send a message with your full name (not your mailing address)
as follows to <listserv@ipl.rpi.edu>.  For example, if your name were
John Snodgrass, you could use the following csh command to subscribe:

% mail listserv@ipl.rpi.edu << EOF
subscribe image-archive John Snodgrass
EOF
				-----
Note: please read the above directions carefully.  The mailing list was
just flooded by a lot of people who posted subscription requests to the
list itself.  If you subscribed and did not get a welcome message back,
please try again and check the instructions carefully.

For more information about listserv, send a message with the word "help"
to <listserv@ipl.rpi.edu>.
				-----
Good luck!
Rodney


Newsgroups: sci.image.processing,comp.graphics
From: jle@dam.brown.edu (Jon Elion)
Subject: Noise Reducing w/ Edge Enhancement
Originator: jle@rufus
Organization: Brown University / Cardiac Image Processing Lab
Date: Mon, 27 Jul 1992 02:15:55 GMT

Would be interested in from anyone who has experience with image
filtering techniques for noise reduction that simultaneously ENHANCE
edges.  Normally, these two operations are mutually exclusive (as
noise reduction can tend to BLUR edges, not sharpen them).  There
exist non-linear approaches that achieve this goal (although
tending to be computationally very intensive).

Application is x-ray fluoroscopy (noise is Poisson).  Goal is to reduce
the Poisson noise while providing edge enhancement.

Anecdotes, experience, pointers to articles, etc. would be appreciated.
From: alien@essex.ac.uk ("Adrian F Clark")
Newsgroups: sci.image.processing
Subject: Re: ISO standards
Date: 30 Jul 92 14:28:26 GMT
	<1992Jul30.070315.6720@solaris.rz.tu-clausthal.de>
Organization: University of Essex, UK
In-reply-to: bloemer@tnt.uni-hannover.de's message of 30 Jul 92 07:03:15 GMT

In article <1992Jul30.070315.6720@solaris.rz.tu-clausthal.de> bloemer@tnt.uni-hannover.de (Arnold Bloemer) writes:

> I read in an overview edited by Dr. Kroemker, that language bindings are under
> development. Is there anything available already ?

Only a C binding is under way at the moment.  A Fortran-90 binding has
been planned, but no-one has yet volunteered to spend the time and
effort on writing it yet.  There is a queue of three or four people
who would like to produce a C++ binding, if the language is
standardized before it becomes obsolete.

> Are there any first implementations of IPI-PIKS or IPI-IIF in progress?

There is an IPI consortium who, I believe, aim to produce an
implementation (I'm not a member of it, and so don't know what they're
doing).  I'm trying to put together a pilot implementation myself,
too.  If I ever finish it, I'll probably make it available to the
world at large.

..Adrian


--
 Dr Adrian F. Clark                                   JANET: alien@uk.ac.essex
 INTERNET: alien%uk.ac.essex@nsfnet-relay.ac.uk          FAX: (+44) 206-872900
 BITNET: alien%uk.ac.essex@ac.uk              PHONE: (+44) 206-872432 (direct)
 Dept ESE, University of Essex, Wivenhoe Park, Colchester, Essex, C04 3SQ, UK.
From: rpatil@nmsu.edu (Raj Patil)
Newsgroups: sci.image.processing
Subject: Algorithms for Object recognition...
Date: 27 Jul 92 20:31:54 GMT
Distribution: sci.image.processing
Organization: Computing Research Lab


Hi: 

Has anyone implemented following features extraction routines?.
These features are mentioned in Pratt's Image processing book on page 646.
He has a reference to this which is unpublished Stanford Research Institute'
Notes. Has anyone implemented these or know of any place I can get hold 
of routines which can do following things.


1) The smallest rectangle oriented along the major axis of 
   the object that encompasses the object (Object oriented bounding box)
                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2) dimensions of object oriented box, width, height

3) the minimum and maximum distance between the centroid and a 
   perimeter pixel

4) The angle of the minimum and maximum radius vector with respect 
  to the horizontal axis

5) ratio of min radius angle to max radius angle.

Out of the above 1-4 are not difficult to implement but the object
oriented rectangles are the ones i am looking for.


regards


raj
USDA, ARS
Newsgroups: sci.image.processing,comp.compression
From: goblej@impcsun1.bme.Virginia.EDU (John C. Goble)
Subject: Color Hardcopy
Summary: What is available ??
Organization: University of Virginia
Distribution: usa
Date: Wed, 22 Jul 1992 02:36:35 GMT

We are in the market for a color hardcopy device for recording medical
images produced on HP 9000/7XX hardware.  We have both 8 bit and 24bit
versions, and scsi is probably the interface of choice.  Image
permanence is an issue, and we need to produce both paper and 
transparency material.

So.... what is available out there?  We've looked at the Kodak units,
but i've really got to be convinced before i spend the equivalent of
2 or 3 workstations for a printer!  Has anyone used the new Tek units?
What else seems to work?                           

John Goble     Dept of Neurosurgery, University of Virginia
               goble@virginia.edu
               (804) 243-0221

Xref: sparky sci.image.processing:258 comp.graphics:8252
From: dubuf@sicsun.epfl.ch (Hans DU BUF)
Newsgroups: sci.image.processing,comp.graphics
Subject: Re: Noise Reducing w/ Edge Enhancement
Date: 29 Jul 92 10:38:50 GMT
Followup-To: sci.image.processing
Organization: Ecole Polytechnique Federale de Lausanne

In article <ben.712345975@galaxy>, ben@ph.tn.tudelft.nl (Ben Verwer) writes:
|> jle@dam.brown.edu (Jon Elion) writes:
|> 
|> >Would be interested in from anyone who has experience with image
|> >filtering techniques for noise reduction that simultaneously ENHANCE
|> >edges.  Normally, these two operations are mutually exclusive (as
|> >noise reduction can tend to BLUR edges, not sharpen them).  There
|> >exist non-linear approaches that achieve this goal (although
|> >tending to be computationally very intensive).
|> 
|> >Application is x-ray fluoroscopy (noise is Poisson).  Goal is to reduce
|> >the Poisson noise while providing edge enhancement.
|> 
|> >Anecdotes, experience, pointers to articles, etc. would be appreciated.
|> 
|> How about: Edge preserving smoothing
|> Proc, 4th Int. Conf on Pattern Recognition
|> Nov 7-10 1978 Kyoto
|> Nagao & Matsuyama
|> 
|> 
|> Basically, compute variance and mean in 4 quadrants in the neighbourhood
|> around a point and take the mean of the quadrant with the lowest vaariance.
|> In TCL-Image on a Quadra: 1.9 seconds for a 256*256 image independent of
|> neighbourhoodsize.
|> 
|> Ben

Yep, probably a good technique but howcome "independent of neighbourhood
size". I don't know that Quadra system but I get size independence only
on a vectorizing machine like a cray by careful splitting up the summations
over rows and then columns (and then CPU time is peanuts).

For other filter techniques see:
du Buf, J.M.H. and Campbell, T.G. (1990) A quantitative evaluation of edge-preserving smoothing techniques. Signal Processing 21, pp 289-301.

Contains also methods which enhance edges.

Hans dB
Newsgroups: sci.image.processing
From: cflatter@nrao.edu (Chris Flatters)
Subject: Re: Image processing package...
Reply-To: cflatter@nrao.edu
Organization: NRAO
Date: Wed, 29 Jul 1992 18:53:46 GMT

In article 92Jul29115240@halley.est.3m.com, manning@halley.est.3m.com (Arthur T. Manning) writes:
>I have uploaded all the Numerical recipes source code to my Sun.  I'd be
>happy to ftp it all to a public site.  Where should I send it?

The authors of Numerical Recipes explicitly forbid redistribution of the
routines.  No one should be making the Numerical Recipes routines available
for anonymous ftp.

	Chris Flatters
	cflatter@nrao.edu

Newsgroups: sci.image.processing
From: zpeng@milton.u.washington.edu ()
Subject: Help: color image processing
Reply-To: zpeng@u.washington.edu
Organization: University of Washington, Seattle
Date: Thu, 23 Jul 1992 02:01:27 GMT

Hello there:

  I am going to be involved in the color image processing project
this summer. Does anyone have experience on that topic?
I would like to know any good books, papers, and algorithms about 
color image processing, particularly color segmentation, leveling, 
thresholding, color to grayscale (bitmap) conversion, and 
color representation (RGB, CMY, etc.) which is less computational
expensive. I highly appreciate any information, recommendation, 
suggestion, comment. 

-Fred

P.S. Please respond to zpeng@u.washington.edu Thanks.
From: rpatil@nmsu.edu (Raj Patil)
Newsgroups: sci.image.processing
Subject: Object classification ...
Date: 27 Jul 92 20:30:31 GMT
Distribution: sci.image.processing
Organization: Computing Research Lab


Hi:

I am faced with following problem to be solved using image processing
techniques:

We are trying to classify different non-lint particles in a cotton sample
using imaging techniques.

Cotton sample after ginning contains different kind of trash material on the
basic of which cotton is graded for it quality. The trash (non-lint particles)
are of type pieces of leaf, bark, sticks, pepper (fine pieces of leaf), 
cotton seed coat fragments, etc. We are looking at different features
of these particles, area, perimeter, shape factor, eccentricity, moments etc.
Using these features we have achieved fairly good classification. We also 
used clustering approaches, Neural nets etc. 

Those who have seen some of these non-lint particles, is these anything else
that we need to consider as feature, in order to get a better 
classification ? Like most of real life problems, one major problem is 
of overlapping clusters of these trash types and increasing feature 
space may improve the classification.

Any suggestions and ideas are appreciated.

Regards

raj
USDA, ARS
From: asr@castle.ed.ac.uk (Angus "Fluffy" Rae)
Newsgroups: sci.image.processing
Subject: Request for algorithm to reduce number of used colours...
Date: 22 Jul 92 15:33:33 GMT
Distribution: sci
Organization: CATHY_VoiceMail_Project

Hi. 

A friend of mine has written a program to take (on an Atari ST) a 512
colour picture produced by GFA-Raytrace and reduce the number of colours
to 16 to make a standard Degas picture. This he does by simply counting
the number of times each of the 512 possible colours are used and using
the 16 most popular, converting the rest to the closest of the popular
16. This is a) slow and b) doesn't give the 16 most _useful_ colours.

Can anyone point me at an algorithm for this sort of colourmap
reduction? a) and b) above might be mutually exclusive - a fast routine
that is pretty kludgy as far as colour selection goes would also be
useful. I've heard the phrase "mean-cut" or something like it in
reference to b).

Thanks in advance for any help.

-- 
Angus G Rae, the Cuddly Vampire Teddy Bear [asr@castle.edinburgh.ac.uk]
CATHY VoiceMail, Computer Science Dept., Edinburgh University
"I'm on the run from the Facist Police with a murderer and
 a mass murderer and a man in a bri-nylon shirt."  Rimmer, Red Dwarf V
Newsgroups: sci.image.processing
From: egntoh@ntuix.ntu.ac.sg (Toh Guan Nge)
Subject: Re: image restoration
Organization: Nanyang Technological University - Singapore
Date: Sat, 25 Jul 1992 06:51:49 GMT


yes, the Baalke's enhancement filter works for my blurred image,
but any info on the algorithm, any publication carried it?


--
Toh Guan Nge, School of EEE,
Nanyang Technological University, Singapore
Internet Email: egntoh@ntuix.ntu.ac.sg
Bitnet   Email: egntoh@ntuvax.bitnet
Xref: sparky sci.image.processing:204 sci.space:10772
From: opus@pioneer.unm.edu (Colby Kraybill)
Newsgroups: sci.image.processing,sci.space
Subject: SPIF Update
Date: 24 Jul 92 19:49:25 GMT
Organization: Space and Planetary Image Facility




	Space and Planetary Image Facility Update:

	Currently in the CD-ROM players, 

	The first two disks of the Voyager fly-bys of Saturn.
	The Viking Thermal Mapper disk.

	We also try to mirror some of the image processing applications
	that Ames keeps.  They are in pub/ImageProcessing/(platform)

	For more information concerning SPIF, get the file 
	pub/info/begginer-info

-- 
Colby Kraybill
Space and Planetary Image Facility
University of New Mexico
From: mahonj@swift.cs.tcd.ie
Newsgroups: sci.image.processing
Subject: Re: Buying a lens
Date: 27 Jul 92 17:53:33 GMT
Organization: Computer Science Department, Trinity College Dublin

In article <5435@m1.cs.man.ac.uk>, mark-r@spec0.ee.man.ac.uk (Mark Robinson (JO PhD)) writes:
> Hi.
> 
> Quick question about lenses. I want to buy a fixed focus lens
> (fixed focus == less glass == lower distortion ?). I would
> like an object about 15mm diameter to fill an image with the
> object - camera distance somewhere between 40 and 70cm.
> 
> How do I calculate the focal length of the lens?
> 
> Cheers
> Mark
> mark-r@snow_white.ee.man.ac.uk

A 2/3 " CCD camera has sensor dimensions of 8.8 x 6.6 mm.

Your Object has a diameter of 15 mm, so the magnification ratio is 
approximately 2.5 : 1

1 / f = 1 / 50 + 1 / 20  (Lens equation) u & v may be confused.

=> 1 / f = 0.07

=> f = 14 mm

so use a 16 mm c-mount lens + some extension tubes.

These can both be bougth from Cosmicar, but the lens quality is 
not great as they are for CCTV rather than CCD Macro.

Alternately try Tamron, or get a 35 mm camera lens and convert it or
get a c-mount -> 35 mm camera adaptor.

A cheap way of doing this is to glue (yes) [using superglue or epoxy resin]

a c-mount 5mm extension tube to the back of a 35mm camera lens (if the
rear lens element is small enough).  Old Pentax 35 mm and I assume 28mm
screw thread lenses are suitable if you can find them.  A 28mm lens will
be better quality than a Cosmicar (in my experience) but will give a much
greater standoff than a 16mm lens.

	I hope this is of use,
	
		James Mahon

			Vision and sensor research unit
			Trinity College Dublin,
			Ireland

lenses are quite good.  This (say a 28mm will give longer standoff
Xref: sparky sci.image.processing:174 comp.graphics:8040
From: thinman@netcom.com (Technically Sweet)
Newsgroups: sci.image.processing,comp.graphics
Subject: Mip-Map Source Code?
Date: 22 Jul 92 19:22:27 GMT
Reply-To: thinman@netcom.com
Organization: International Foundation for Internal Freedom

Where would I find source code out there in FTP-land
for implementing mip-map encoding and decoding?
(This is a technique for storing images in summary
form with a series of delta tabless that supply more 
and detail.)  I'll summarize replies to the net.

Thanks in advance,

Lance Norskog
thinman@netcom.com
-- 

Lance Norskog

Data is not information is not knowledge is not wisdom.
Newsgroups: sci.image.processing
From: mathew@elroy.jpl.nasa.gov (Mathew Yeates)
Subject: RLAB Toolkit for Restoration, Registration, and Recognition
Organization: Image Analysis Systems Group, JPL
Date: Fri, 24 Jul 1992 21:17:33 GMT


I have gotten several requests for my Khoros toolkit rlab. 
Version 0.1 is available through anon ftp at elroy.jpl.nasa.gov
in pub/mathew. Important: One of the Khoros routines,lvtranslat.c,
is buggy. You need the corrected version which I have placed in the
same directory. After obtaining lvtranslat.c you will need to
reinstall the vipl library.

Note: Release 0.2 is coming out soon if you can wait. I have added
routines for fast template matching in stereo images and routines
for texture classification. Also, I will include ready to go
workspaces that illustrate the usage of the routines. I recommend
waiting for 0.2. Because I will be busy this weekend I probably
will not release this updated version until Aug 3.

-Mathew

(You need to send a registration form to me, its included with the package.
Its no big deal, basically your name and e-mail address, but I need it.)

Newsgroups: sci.image.processing,comp.graphics
From: ejdavies@watcgl.uwaterloo.ca (Eric Davies)
Subject: sampling pixels in 2d quadrilateral?
Organization: University of Waterloo
Date: Sat, 25 Jul 1992 21:51:50 GMT

Hi,

    I'm looking for some source code fragment or pseudo-code to
compute the average intensity of the area inside a quadrilateral
on bitmapped image. To make matters worse, I'd like the code to
handle partially included pixels properly and the coordinates of the
vertices of the quadrilateral may not be integer. 

For instance, if I represent each pixel by an 8x4 area of digits, and
my quadrilateral happens to be the box outlined by the periods, then 

     111111112222222233333333
     111111112222222233333333 
     11111.................33
     11111.112222222233333.33
     44444.445555555566666.66
     44444.445555555566666.66
     44444.445555555566666.66
     44444.................66
     777777778888888899999999
     777777778888888899999999
     777777778888888899999999
     777777778888888899999999

I'd like to get back the value of the expression:
   4/32*intensity('1') + 16/32*intensity('2') + 
   12/32*intensity('3') + 12/32*intensity('4') +
   32/32*intensity('5') + 24/32*intensity('6')

Any suggestions, tips, pointers appreciated.

Eric.
From: mtalbot@physics.adelaide.edu.au (ROAD_WARRIOR)
Newsgroups: sci.image.processing
Subject: Building a picture scanner
Keywords: scanner building picture
Date: 22 Jul 92 06:00:38 GMT




        I'm trying to design and build a picture scanner and was wondering if
anyone could tell me where I could find some information on the actual
scanning mechanism.  If anyone has done something like this already and is
willing to share their knowledge I would be very grateful if you would email
me at
        mtalbot@physics.adelaide.edu.au

    If anyone knows of any related articles would you please tell me where I
could find them?


                Thanks in advance


                        ROAD_WARRIOR


--
******************************************************************************
     Even HERE they were not masters of time. Eternity, yes! But not time.
##############################################################################
Newsgroups: sci.image.processing
From: charters@madhaus.utcs.utoronto.ca (Jim Charters)
Subject: Re: Image processing package...
Organization: University of Toronto Computing Services
Date: Thu, 30 Jul 1992 12:59:55 GMT

In article <MANNING.92Jul29115240@halley.est.3m.com> manning@halley.est.3m.com (Arthur T. Manning) writes:
>I have uploaded all the Numerical recipes source code to my Sun.  I'd be
>happy to ftp it all to a public site.  Where should I send it?
>--


I think there should be some ethical considerations here.  These are
copyrighted materials.



-- 
#include <standard_disclaimer>
Jim Charters
Geophysicist & Chief Computer Flunkey / University of Toronto Geology
Toronto / Ont. / CANADA / M5S 3B1 / charters@quartz.geology.utoronto.ca
Newsgroups: sci.image.processing