scaling surface mesh results in straight centerline

[keiyamamo]

If we scale the surface mesh to be small at the beginning of pre-processing, centerlines are likely to be straight, causing issue with the overall meshing. This is previously reported elsewhere vmtk/SlicerExtension-VMTK#26

It seems like the limitation of VMTK when the branches becomes too “narrow” due to sclaing.

It is definitely more stable & robust to scale the mesh when converting to HDF5 format using sch5. However, this does not scale the probe points & other parameters saved in json file.

[keiyamamo]

Closing for now as it is our priority to cover this issue. This can be avoided by only scaling the resulting HDF5 file with sch5 parameter