[R] Image Processing packages

Charles Annis, P.E. Charles.Annis at StatisticalEngineering.com
Fri Jan 27 16:35:43 CET 2006


I use R to quantify the efficacy of ultrasonic inspections of metal
components (e.g. looking for nonmetallic inclusions in forgings) and use R
for image processing, but my methods have been rather a kluge.  I am
interested in your R functions, if you will make them available.
Unfortunately, making a package for CRAN is (in my opinion) WAY too hard on
Windows, and I've given up, but I hope that you do not.  I second Stephan
Matthiesen's recent suggestion that you make your image processing functions
available to fellow R users, if not on CRAN, then perhaps as ascii files
from your website.


Charles Annis, P.E.

Charles.Annis at StatisticalEngineering.com
phone: 561-352-9699
eFax:  614-455-3265
-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Kort, Eric
Sent: Thursday, January 26, 2006 2:39 PM
To: Thomas Kaliwe; r-help at stat.math.ethz.ch
Subject: Re: [R] Image Processing packages

Thomas Kaliwe wrote:
> Hi,
> I've been looking for Image Processing packages. Thresholding, Edge
> Filters, Dct, Segmentation, Restoration. I'm aware, that Octave,
> etc. would be a good address but then I'm missing the "statistical
> power"  of R. Does anybody know of packages, projects etc. Comments on
> wether the use of R for such matters is useful are welcome.

See also my package rtiff for reading tiff images.

I routinely do image analysis in R.  Yes, it is relatively slow compared
to dedicated solutions, but I like the smooth integration with the
associated statistical analysis and the ability to have a single script
that performs the image analysis and multiple files and subsequent
statistical analysis, and with modern computing equipment R is fast
enough for my purposes.  

I have a variety of standard image processing functions written in R,
but have yet to distribute them because most people choose not to
perform image analysis in R for the previously stated reasons.  

So in general I would agree that R is sub-optimal for image processing
(and this is certainly outside the realm of things R was intended to do
if I read the early mailing list archives correctly).  However, it can
be done and it might be desirable to do so from a work-flow perspective.


> Greetings
> Thomas Kaliwe
This email message, including any attachments, is for the so...{{dropped}}

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