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Re: Images in Mathematica

  • To: mathgroup at
  • Subject: [mg14286] Re: Images in Mathematica
  • From: Paul Abbott <paul at>
  • Date: Tue, 13 Oct 1998 01:21:08 -0400
  • Organization: University of Western Australia
  • References: <6vhj42$>
  • Sender: owner-wri-mathgroup at

JOHN C ERB wrote:

> I would like to be able to import a scanned image (e.g., medical x-ray
> film) into Mathematica,
> and be able to ascertain the x and y coordinates of an object on that
> image (given that I have
> an x-y scale already on the image).
> Is there a package already available for doing this?  

This capability is built-in, at least manually:  

[1] Copy the graphic to the clipboard and simply paste it into

[2] If you want portability of the resulting Notebook, convert the
graphic to a Bitmap as this will then display on all platforms 

[3] Select the graphic by clicking on it.

[4] Select (multiple) points on the graphic by clicking the mouse whilst
holding down the command-key on Mac, ctrl on Windows and Unix.

[5] Copy these points to the clipboard (using Edit | Copy) and then
paste the result into a new input cell.  You should also digitize the
scale off the image.

A search of comp.soft-sys.math.mathematica using Deja news

for digitiz* returned a number of postings related to this topic so you
might want to follow up on these threads.

Incidentally, there are some good Image Processing courses out there:
have a look at


Paul Abbott                                   Phone: +61-8-9380-2734
Department of Physics                           Fax: +61-8-9380-1014
The University of Western Australia            Nedlands WA  6907       
mailto:paul at  AUSTRALIA              

            God IS a weakly left-handed dice player

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