I recently upgraded my elastix registration software, and simultatneously upgrading itk from 4.8 to the 4.13. This greatly affected the registration timings (3 to 4-fold slower). After some testing, I found it this problem starts with itk 4.9. My parameterfiles contains a MultiMetric registration with Bending Energy Penalty and Advanced Mattes Mutual Information. From the elastix logs. it seems that the increased timings are mainly caused by the multi-metric registration (and they are e.g. not present in a single metric mattes mutual information).
Is there any registration expert or itk expert that may have an idea on the cause of this, and how to solve it?
I’m running Windows 10, using VS2013 (CV12), 64 bits, and compile itk and elastix with all default settings.