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MathGroup Archive 1997

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Re: Q - image processing / reading TIFF/JPEG files?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg8731] Re: [mg8708] Q - image processing / reading TIFF/JPEG files?
  • From: seanross at worldnet.att.net
  • Date: Sat, 20 Sep 1997 22:27:59 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

bestor at cs.wisc.edu wrote:
> 
> Does anyone have information about what packages are available for doing
> basic image processing using MMa? I have checked MathSource and there doesn't
> seem to be anything there.
> 
> In a similar vein, what packages other than ReadTIFFpackage can read in
> graphics files into MMa (eg into a 2D list)? The problem with ReadTIFFpackage
> is that is requires FastBinaryFiles which I cannot get to compile on my
> NEXTSTEP box. Alternatively, has somebody out there got FastBinaryFiles to
> work under NEXTSTEP/OPENSTEP?
> 
> TIFF would ideal, but any common graphics format would be OK.
> 
> Thanks in advance,
> 
> - Gareth
> ---
> Gareth Bestor                        bestor at cs.wisc.edu
> Computer Sciences Department         http://www.cs.wisc.edu/~bestor
> University of Wisconsin-Madison

The standard graphics approach now involves PaintShop Pro (jasc.com) and
using it to convert the graphics to RAW or PGM(portable gray map)
format, then dealing with it.  I don't know if PaintShop Pro is
available for Nextstep, but I suspect it is not.  Barring that, you will
have to research the graphics format of the files you are interested in
and write your own routine.  Someone has done this for monochrome
bitmaps.  I can send you his code if you like.  You also might post your
problem to the suggestions at wolfram.com and suggest that they
incorporate  graphics file reading abilities into Mma.  I personally
think that in light of the cat picture on page 9 of the tour of
mathematica that it is  something close to false advertising that they
do not have graphics file reading abilities.


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