# Smoothing kernel size, Margin size in Segment editor

**URL:** <https://discourse.slicer.org/t/smoothing-kernel-size-margin-size-in-segment-editor/2579>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [April 13, 2018, 7:44am UTC](https://discourse.slicer.org/t/smoothing-kernel-size-margin-size-in-segment-editor/2579 "2018-04-13T07:44:00Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![MancaZerovnik](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mancazerovnik/32/1400_2.png) [@MancaZerovnik](https://discourse.slicer.org/u/MancaZerovnik)\
**Post date:** [April 13, 2018, 7:44am UTC](https://discourse.slicer.org/t/smoothing-kernel-size-margin-size-in-segment-editor/2579/1 "2018-04-13T07:44:00Z")

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I am doing segmentation of volume with Segment editor.  
I can’t use margin tool. Beside margin size input I get warning “margin too small” but I can’t make it big enough, because the limit of the input field is 9999.000mm. Why is that?

I have the similar problem with a kernel size in Smoothing tool, where I can’t set kernel that would be bigger than 1x1x1 voxel (because of limitations in the input field - 10000.000mm).

Is there any solution to overcome those limitations?

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [April 13, 2018, 12:44pm UTC](https://discourse.slicer.org/t/smoothing-kernel-size-margin-size-in-segment-editor/2579/2 "2018-04-13T12:44:21Z")

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What is the image spacing of your volume?

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**Author:** ![MancaZerovnik](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mancazerovnik/32/1400_2.png) [@MancaZerovnik](https://discourse.slicer.org/u/MancaZerovnik)\
**Post date:** [April 16, 2018, 7:56am UTC](https://discourse.slicer.org/t/smoothing-kernel-size-margin-size-in-segment-editor/2579/3 "2018-04-16T07:56:20Z")

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224980.1875mm on all axis,

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [April 17, 2018, 3:12am UTC](https://discourse.slicer.org/t/smoothing-kernel-size-margin-size-in-segment-editor/2579/4 "2018-04-17T03:12:58Z")

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I’ve updated Segment Editor effects so that you can set up to 100x larger values than the image spacing. The fix is available in the nightly build that you download tomorrow or later.