Staircase aware smoothing


(Eric Wilson) #1

I am trying to see if slicer has a built in method for smoothing out the staircase effect on models.
for example, this skull model shows the effect on the back:

there are certainly papers that outline algorithms to smooth the staircase effect, but implementation can be a rather daunting task. example: https://pdfs.semanticscholar.org/6f9a/3e71b8eac55500fd1e9535f60c3ad88662cc.pdf

i see there are posts here (Help with smoothing models) that state cubic voxels are required to avoid staircase artifacts. does that apply in this case where i am not cropping the volume? are voxels in slicer cubic by default?

i would rather avoid generalized smoothing to preserve the integrity of the model in sections without the stair step effect.


(Andras Lasso) #2

Slicer has all the tools to deal with this. Do you still have the image where this model is generated from?


(Eric Wilson) #3

yes, i have everything needed to generate this model


(Andras Lasso) #4

OK, if you have the original volume then these instructions should work well.