# Adding voxel-space sigma specification to itk::SmoothingRecursiveYvvGaussianImageFilter

**URL:** https://discourse.itk.org/t/adding-voxel-space-sigma-specification-to-itk-smoothingrecursiveyvvgaussianimagefilter/1153
**Category:** Engineering
**Created:** [July 25, 2018, 8:08pm UTC](https://discourse.itk.org/t/adding-voxel-space-sigma-specification-to-itk-smoothingrecursiveyvvgaussianimagefilter/1153 "2018-07-25T20:08:30Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![gdevenyi](https://discourse.itk.org/user_avatar/discourse.itk.org/gdevenyi/32/355_2.png) [@gdevenyi](https://discourse.itk.org/u/gdevenyi)
#### Post date: [July 25, 2018, 8:08pm UTC](https://discourse.itk.org/t/adding-voxel-space-sigma-specification-to-itk-smoothingrecursiveyvvgaussianimagefilter/1153/1 "2018-07-25T20:08:30Z")

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Rather than diverting NaN for DiscreteGaussian thread any more, I’d like to bring up a feature I’m adding to the RecursiveYvv filter.

I’ve got a draft available here [https://github.com/InsightSoftwareConsortium/SmoothingRecursiveYvvGaussianFilter/pull/4](https://github.com/InsightSoftwareConsortium/SmoothingRecursiveYvvGaussianFilter/pull/4)

Right now I’m having a bit of C++ problem getting the setting to pass all the way into the right place, I’d appreciate some help here.

Goal of this is to make SmoothingRecursiveYvvGaussianImageFilter a drop-in replacement for DiscreteGaussian