Geometric Model Reconstruction - Computational Hemodynamics: Theory, Modelling and Applications - page 54

Original CT-scan 3D topographic surface watershed segmentation

Fig. 3.10 A slice CT-scan of the aorta with the watershed segmentation algorithm applied

algorithms using computer languages such as C, C++, and Java. For most engineers
and medical practitioners this step is not feasible without such skills. Fortunately
a number of commercial and free specialised medical software exists, that con-
verts the CT/MRI images and applies segmentation algorithms with an easy to use
Graphical User Interface (GUI. A sample of what may be out in the public domain
brief description of free open source software is given below:

Open Source/Freeware

• CVIPTools is a UNIX/Win32-based package and contains a collection of C and
C++ computer imaging tools that includes edge/line detection, segmentation,
and many other functions. ( www.ee.siue.edu/CVIPtools )
• Fiji/ImageJ is a Java-based image processing package that uses additional pl-
ugins for a variety of functionalities including segmentation algorithms ( pacific�
mpi-cbg�de/wiki/index�php/Fiji)�
• GemIdent is an interactive program that is designed for colour segmentation in
images with few colours, and the objects of interest look alike with small varia-
tion ( gemident�com ).
• ITK-SNAP ( www.itksnap.org ) is an interactive software application that allows
users to navigate three-dimensional medical images, manually delineate anatom-
ical regions of interest, and perform automatic image segmentation.
• Megawave 2 is made up of C library modules, that contains original algorithms
written by researchers and is run using Unix/Linux ( megawave�cmla�ens-cachan�
fr ).
• MITK & 3Dmed is made up of C++ library for integrated medical image pro-
cessing, segmentation, and registration algorithms ( www.mitk.net/download.
htm) .
• Slicer has a GUI that allows manual and automatic segmentation, registration,
and three-dimensional visualization. It is a modular platform which means that it
allows addition of new modules ( www.slicer.org ).
• VXL ( vxl�sourceforge�net ) is a collection of C++ libraries designed for computer
vision research and implementation. The acronym stands for Vision-X-Library
where the letter 'X' represents another letter related to the application. For ex-