Dear All, I am trying to fix the timeout error of itkTimeVaryingBSplineVelocityFieldPointSetRegistrationTest. ( https://open.cdash.org/testSummary.php?project=2&name=itkTimeVaryingBSplineVelocityFieldPointSetRegistrationTest&date=2015-12-17 )
>From my observation, the following function is a bottleneck of the whole pipeline: "template<typename TFixedImage, typename TMovingImage, typename TTransform, typename TVirtualImage, typename TPointSet> void TimeVaryingBSplineVelocityFieldImageRegistrationMethod<TFixedImage, TMovingImage, TTransform, TVirtualImage, TPointSet> ::GetMetricDerivativePointSetForAllTimePoints( VelocityFieldPointSetType *velocityFieldPointSet, WeightsContainerType *velocityFieldWeights )" ( https://github.com/InsightSoftwareConsortium/ITK/blob/master/Modules/Registration/RegistrationMethodsv4/include/itkTimeVaryingBSplineVelocityFieldImageRegistrationMethod.hxx ) More specifically, the function call of " this->m_OutputTransform->IntegrateVelocityField();" from the following lines are slow. // Get the fixed transform. We need to duplicate the resulting // displacement field since it will be overwritten when we integrate // the velocity field to get the moving image transform. if( timePoint == 0 ) { this->m_OutputTransform->GetModifiableDisplacementField()->FillBuffer( zeroVector ); } else { this->m_OutputTransform->SetLowerTimeBound( t ); this->m_OutputTransform->SetUpperTimeBound( 0.0 ); this->m_OutputTransform->SetNumberOfIntegrationSteps( numberOfIntegrationSteps ); this->m_OutputTransform->IntegrateVelocityField(); } If you have any suggestion to solve the timeout error, please let me know. Thanks, Hyun Jae
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