# Smooth Mesh? Comparison to MATLAB **URL:** \ **Category:** Support\ **Created:** [September 10, 2021, 6:55pm UTC](https://discourse.slicer.org/t/smooth-mesh-comparison-to-matlab/19616 "2021-09-10T18:55:12Z")\ **Posts on this page:** 3\ **Page:** 1

**Author:** ![JoJo](https://avatars.discourse-cdn.com/v4/letter/j/ecd19e/32.png) [@JoJo](https://discourse.slicer.org/u/JoJo)\ **Post date:** [September 10, 2021, 6:55pm UTC](https://discourse.slicer.org/t/smooth-mesh-comparison-to-matlab/19616/1 "2021-09-10T18:55:12Z")

Hello, for my bachelor thesis I segmented a bone out CT volume data via MATLAB and exported it with stlwrite. For a comparison I’ve used 3D Slicer too. Now I noticed that the 3D-Slicer mesh is much more smoother than the mesh I’ve created with MATLAB (very pixelized). Now my question: Is there any algorithm in 3D Slicer which causes the smooth surface? Because the original volume data have the same resolution… ---

**Author:** ![hherhold](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/hherhold/32/12199_2.png) [@hherhold](https://discourse.slicer.org/u/hherhold)\ **Post date:** [September 10, 2021, 7:02pm UTC](https://discourse.slicer.org/t/smooth-mesh-comparison-to-matlab/19616/2 "2021-09-10T19:02:07Z")

Smoothing may have been enabled in Segment Editor (see pic). You can adjust the amount of smoothing, or turn it off entirely. ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/c/f/cfb23129a9a9df2a5bb37f34d7f80ed43f3e8e87.png) ---

Oh yeah, note that the default smoothing is (I think) 0.5.