[ITK-dev] Scales Estimator

[brian avants]

i believe these questions might best be answered by michael stauffer
and baohua wu, both cc'd.

brian




On Thu, May 22, 2014 at 8:41 AM, Bradley Lowekamp
<blowekamp at mail.nih.gov> wrote:
> Nick,
>
> We are working on ITKv4 Registration for SimpleITK. I am adding some methods for the Scales Estimators. This is what I currently have:
>
>     Self& SetOptimizerScales( const std::vector<double> &scales);
>     Self& SetOptimizerScalesFromJacobian(unsigned int centralRegionRadius = 5 );
>     Self& SetOptimizerScalesFromIndexShift(unsigned int centralRegionRadius = 5,
>                                            double smallParameterVariation =  0.01 );
>     Self& SetOptimizerScalesFromPhysicalShift(unsigned int centralRegionRadius = 5,
>                                               double smallParameterVariation =  0.01 );
>
>
> I have a couple questions:
>
> 1) Despite the some public methods to set the SamplingStrategy, this is really set by the implementation of the estimator is not not configurable for any estimator? ( Should these methods[1][2] actually be protected?)
> 2) I can't seem to determine if the FromShiftBased estimators actually use the centralRegionRadius, is that actually used?
> 3) Those parameters look right? missing anything?
>
> Thanks,
> Brad
>
> [1] http://www.itk.org/Doxygen/html/classitk_1_1RegistrationParameterScalesEstimator.html#a28bda2ed3551af2cacb30b6920180881
> [2] http://www.itk.org/Doxygen/html/classitk_1_1RegistrationParameterScalesEstimator.html#aa7f519d80e0cabe7d25de1ae6f287cc4
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