Gridbus Workflow Enactment Engine - Grid Computing: Infrastructure, Service, and Applications - page 135

2. For each warp parameter set, reslice creates a new version of the
original brain image according to the coni guration parameters
dei ned in the warp parameter set. The output of each reslice
procedure is a resliced image.

3. softmean averages all the resliced images into one single atlas
image.

4. The averaged image is sliced using slicer to give a 2D atlas along a
plane in three dimensions ( x , y, and z ), taken through the center of
the 3D image. The output is an atlas dataset.

Finally, each atlas dataset is converted into a graphical atlas image
using convert .

5.10.2 Experiment

The experiment was conducted using the testbed provided by the
University of Melbourne (Australia), Victorian Partnership for Advanced
Computing (VPAC) (Australia), University of Electro-Communications
(Japan), and University of Innsbruck (Austria). The coni guration of all
resources is listed in Tables 5.2 and 5.3 . Table 5.2 shows the application
software available on every resource. All application software cannot
be installed on every resource, due to their varied capability and admin-
istration policy. The AIR application required for executing procedure
align_warp , reslice , and softmean is installed on the sites of VPAC and the
University of Melbourne, whereas the FSL application required for

TABLE 5.2
Applications Coni guration of Grid Sites

Node/Details Applications Location

Manjra.cs.mu.oz.au AIR*

FSL
Convert

University of Melbourne,
Australia

vgtest.vpac.org AIR VPAC, Australia
Vgdev.vpac.org AIR VPAC, Australia
Brecca-1.vpac.org AIR VPAC, Australia
Brecca-2.vpac.org AIR VPAC, Australia
karwendel.dps.uibk.ac.at FSL University of Innsbruck, Austria
uuuu.maekawa.is.uec.ac.jp FSL University of Electro-Communications,
Japan
walkure.maekawa.is.uec.ac.jp FSL University of Electro-Communications,
Japan
* AIR package includes software for executing the task.