[ITK] ImageRegistrationMethodv4 behavior question

[Matt McCormick]

Hi Tim,

It sounds like a bug. Do you have patch in mind?

Thanks,
Matt

On Wed, Sep 7, 2016 at 1:05 PM, Timothee Evain
<tevain at telecom-paristech.fr> wrote:
> Hi folks,
>
> It's more a dev consideration, but I've been tricked by the SetNumberOfLevels & SetMetricSamplingPercentage methods from the ImageRegistrationMethodv4.
> The former is overwriting any previously set parameters for SmoothingSigmas and ShrinkFactors but also for the SamplingPercentage.
> If I was expecting it for the two first, as we can only set them per levels via arrays, I was expecting the sampling percentage to be stored since we can set it for all levels via the SetMetricSamplingPercentage method (which in fact is only a wrap around the "per levels" one).
> Thus you cannot set the sampling percentage before setting levels. Is that the intended behavior ? That wasn't really clear to me.
>
> Tim
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