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Re: Images in Mathematica

• To: mathgroup at smc.vnet.net
• Subject: [mg14286] Re: Images in Mathematica
• From: Paul Abbott <paul at physics.uwa.edu.au>
• Date: Tue, 13 Oct 1998 01:21:08 -0400
• Organization: University of Western Australia
• References: <6vhj42$jfb@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

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
Mathematica.

[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 

  http://www.dejanews.com/home_ps.shtml

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 

  http://eeunix.ee.usm.maine.edu/ee/faculty/mjkcc/docs/ele489/489.html

Cheers,
	Paul 

 
____________________________________________________________________ 
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 physics.uwa.edu.au  AUSTRALIA                       
http://www.physics.uwa.edu.au/~paul

            God IS a weakly left-handed dice player
____________________________________________________________________