Using STL files from Mimics for Shape Analysis

1

Hello everyone,

I was wondering if someone may be able to help me with some errors I am receiving. Briefly, we have segmented MRI images in Mimics and exported STL files of tibiae. I get the following two errors when trying to Groom the data set of 6 tibiae using the default values:

  1. Warning: Generic Warning: In C:\bdeps\vtk\Common\Core\vtkMath.cxx, line 1334 Unable to factor linear system

  2. Warning: Generic Warning: In C:\bdeps\vtk\Common\Core\vtkMath.cxx, line 814 vtkMath: :Jacobi: Error extracting eigenfunctions

I would greatly appreciate some guidance and please let me know if any additional information is required.

Thanks so much!

2

Can you tell which operation is throwing these warnings?

If possible, could you share one of the STL files with me? amorris@sci.utah.edu

3

Unfortunately, I cannot tell. However, these are the settings I ran. I also just sent an email with one of the STLs. Thanks again for the help! I greatly appreciate it.

image

4

I believe the cause is that this mesh has additional unconnected vertices:

image
image668×620 72.7 KB

image
image1054×1000 87.5 KB

It appears to be only a warning though. Does the grooming still appear to be complete/correct?

We should add a mesh ‘isolate’ step to select the largest connected component.

5

Thank you so much for the help. The grooming does complete and I believe it looks correct. However, are there specific things I should look for to make sure the grooming is done properly?