Page MenuHomePhabricator
Create Task
Maniphest T18203

"Smoothed polygon model" function doesnt work
Closed, ResolvedPublic
Actions

Description

Clicking on smoothed polygon model on a 3D interpolated segmentation
creates an empty surface node.

I saved the file and looked into:
<PolyData>

<Piece NumberOfPoints="0" 
       NumberOfVerts="0" 
       NumberOfLines="0" 
       NumberOfStrips="0" 
       NumberOfPolys="0">

-> The polydata is empty

Event Timeline

riecker added projects: MITK, Bugzilla.Oct 8 2014, 3:04 PM
• hering added a subscriber: • hering.Oct 15 2014, 2:22 PM

The error is the following

VTK-src/Filters/Core/vtkSmoothPolyDataFilter.cxx, line 213
vtkSmoothPolyDataFilter (0x7fffa80096b0): No data to smooth!

Creation of non-smoothed surfaces works fine. So the error is caused by the image smoothing ( for smooth model, the image is first filtered by a gaussian ). The filter very likely provides empty output, maybe data release/scope problems?

• hering added a comment.Oct 15 2014, 2:26 PM

The problem occurs independently of the origin of the segmentation.

• hering added a comment.Oct 15 2014, 4:00 PM

The threshold filter does not work as expected and the filter returns an zero image that leads to an empty surface.

The filter itself is used only to scale the intensity values from [0,1] to [0,100]. The more suitable filter for this is the vtkImageShiftScale. The fixes replaces the filter.

• git-user added a subscriber: • git-user.Oct 15 2014, 4:04 PM

User hering has pushed new remote branch:

bug-18203-SmoothPolygonModelCreationFix
• hering added a comment.Oct 15 2014, 4:55 PM

[24d9f9]: Merge branch 'bug-18203-SmoothPolygonModelCreationFix'

Merged commits:

2014-10-15 15:58:37 Jan Hering [3a52a9]
Fixing intensity scaling before smoothing

  • replacing somewhat unreliable Threshold filter by the more appropriate ShiftScaleFilter to expand intensities from 0,1 to 0,100
kislinsk edited projects, added MITK (2014-10); removed MITK.Aug 1 2016, 10:49 PM
MITK · MIC · IMSY · DKFZ