Segmentation

4. Segmentation

heart-segmentation

The segmentation of the patient heart into (a) aorta, (b) pulmonary artery, (c) left atrium, (d) right atrium, (e) left ventricle, and (f) right ventricle

The segmentation algorithm works as follows:

 

  •  Starting with a Delaunay tetrahedralized volume of either the left or the right portion of the patient heart, we choose a suitable threshold to select segments to be merged and/or kept separate.
  • Once the segmentation reaches the desired accuracy (measured visually) for one compartment, that component is subtracted from the overall volume and the segmentation with a different threshold is performed on the rest.

Figure above shows the performance of the segmentation process on the curated model. The blue cloud around every segmented part shows the whole point set from where the portions are segmented.