[ITK-users] FastMarching UpwindGradient Filters difference

[Bradley Lowekamp]

Hello,

I am trying to figure out the difference between the FastMarchingUpwindGradientImageFilterBase[1] and the FastMarchingUpwindGradientImageFilter[2].

The first thing to notice is that the "Base" class is NOT a parent of the other. Secondly, the non-Base implements a stopping criteria of reaching  a number of target nodes. This is now incorporated as an optional stopping criteria [3], in the framework. Then both of the filters add the upwind gradient image as an output, with what appears to be duplicated code. 

I don't see a real difference here. I think one should be deprecated.

Brad

[1] http://www.itk.org/Doxygen/html/classitk_1_1FastMarchingUpwindGradientImageFilterBase.html
[2] http://www.itk.org/Doxygen/html/classitk_1_1FastMarchingUpwindGradientImageFilter.html
[3] http://www.itk.org/Doxygen/html/classitk_1_1FastMarchingReachedTargetNodesStoppingCriterion.html