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matlab
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 20 Jul 2016 14:18:47 +0200
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33:11e204c432a7 34:922f5c7192c6
1 Interfacing with Matlab and Octave
2 ==================================
3
4 Thanks to the REST API of Orthanc, it is easy to access DICOM images
5 from Matlab or Octave, as depicted in the following sample image:
6
7 .. image:: ../images/Matlab.png
8 :align: center
9 :width: 470px
10
11 Both Matlab and Octave have access to HTTP servers thanks to their
12 built-in `urlread() function
13 <http://nl.mathworks.com/help/matlab/ref/urlread.html>`__. Once must
14 simply install a Matlab/Octave library to decode JSON files. The
15 `JSONlab toolkit
16 <http://www.mathworks.com/matlabcentral/fileexchange/33381-jsonlab--a-toolbox-to-encode-decode-json-files>`__
17 works perfectly to this end.
18
19 .. highlight:: matlab
20
21 Using JSONlab, the following code will download and display a DICOM image::
22
23 SERIES = 'ae164c84-e5bd0366-ba937a6d-65414092-f294d6b6';
24 URL = 'http://orthanc.chu.ulg.ac.be/demo';
25
26 # Get information about the instances in this DICOM series
27 instances = loadjson(urlread([ URL '/series/' SERIES '/instances' ]));
28
29 # Select one slice from the series
30 instance = instances{1,1}.ID
31
32 # Decode the slice with Orthanc thanks to the "/matlab" URI
33 slice = eval(urlread([ URL '/instances/' instance '/matlab' ]));
34
35 # Compute the maximum value in this slice
36 max(max(slice))
37
38 # Display the slice
39 imagesc(slice)
40
41 # Annotate the graph with the patient name and ID
42 tags = loadjson(urlread([ URL '/instances/' instance '/tags?simplify' ]));
43 title([ 'This is a slice from patient ' tags.PatientID ' (' tags.PatientName ')' ])