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