[ITK] [ITK-dev] Potential BSpline registration problems with ITKv4

Johnson, Hans J hans-johnson at uiowa.edu
Wed Apr 16 21:10:45 EDT 2014


FYI

Ali Ghayoor did the following experiments on "BRAINSFitTest_BSplineScaleRotationRescaleHeadMasks" test.

1) In one of my old build directories, I ran the "BRAINSFitTest_BSplineScaleRotationRescaleHeadMasks" test in BRIANSFitv3 (that uses ITKv3 registration framework). The test was passed successfully in both release and debug types, and it took:

22 second in release
88 second in debug

2) I built NAMICExternalProject on my system in release type and ran the above BSpline test in BRAINSTools. The test was passed successfully again, but the run time in ITKv4 is tremendously longer than the time that test takes in ITKv3. The test took:

18 minutes using 4 cores
22 minutes using 1 core (In this case the environmental variable "NSLOTS" is set to 1).

==================================
Basically trying to replicate in ITKv4 the same registration processes of ITKv3.

Hans


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