# Removing staircase artifacts in image/mesh

**URL:** https://discourse.paraview.org/t/removing-staircase-artifacts-in-image-mesh/4494
**Category:** ParaView Support
**Created:** [June 3, 2020, 3:14pm UTC](https://discourse.paraview.org/t/removing-staircase-artifacts-in-image-mesh/4494 "2020-06-03T15:14:45Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![rsj44](https://discourse.paraview.org/user_avatar/discourse.paraview.org/rsj44/32/3961_2.png) [@rsj44](https://discourse.paraview.org/u/rsj44)
#### Post date: [June 3, 2020, 3:14pm UTC](https://discourse.paraview.org/t/removing-staircase-artifacts-in-image-mesh/4494/1 "2020-06-03T15:14:45Z")

</div>

I have a micro-CT scan of an object of which I would like to visualize its mean curvature. When zoomed in on the generated isosurface’s mesh a “the stair steps artifact” becomes visible:

 ![image](https://discourse.paraview.org/uploads/default/original/2X/c/c4237799d808b754eb587931c466abdbd58c2332.png)

Mean curvature:

 ![image](https://discourse.paraview.org/uploads/default/original/2X/f/f57910c6b0b53dbe44639cfeeb48f41d5f089578.jpeg)

I would like to smooth out these serrations/lines to make the distribution of colors more smooth. The original imagedata has already been smoothed using Gaussian blur. However, I cannot increase the strength of it much more without loss of other information in the image.

I also tried multiple combinations of filters such as decimate, subdivision, smooth and generate surface normals. Applying this will remove the stairs but always seem to introduce new artifacts:

 ![image](https://discourse.paraview.org/uploads/default/original/2X/c/c51e76db588686e34470ab20ba7f6b62f5275bb5.jpeg)

I was wondering if anyone would know a correct way to get rid of the stairs and if it would even be possible to achieve this using Paraview (or VTK)/. Any suggestions are appreciated!