MULTIPHASE SEGMENTATION



  1. CV - Permutation effect on Energy Measures
  2. CV Movie of Phases Evolutions
  3. Comparison ICM & CV on FRES
  4. ICM and Initialization Influence
  5. ICM Segmentation (8 phases) and Gray matter Nuclei
  6. ICM Segmentation (7 phases):  Cylinders vs kmeans init
  7. ICM Segmentation (7 vs 8 phases) and Cylinders init

CV - Permutation effect on Energy Measures









CV Movie of Phases Evolutions




Phase_all_slice10.avi



Comparison ICM & CV on FRES




C-V Segmentations

Phases: Bkg - T - T - T - GM - Fat - WM - Skin




ICM Segmentations





ICM and Initialization Influence


Left: K-means "middle" initialization
Middle&Right: Seg(0.005 & 0.05) providing phases: Bkg - T - GM - GM - GM - T - Fat - WM





Left: K-means C-V values initialization
Middle&Right: Seg(0.005 & 0.05) providing phases: Bkg - T - T - T - GM - Fat - WM - skin




  



ICM Segmentation (8 phases) and Gray matter Nuclei


IBSR Case #2 :

True-Seg Seg ICM (30 slices) Seg ICM (all slices) Init. k-means on whole volume

Results with old init (k-means on whole volume)
Results with new init (K-means only on middle slices)
 Manual Segmentation (ground truth)

ICM Segmentation (7 phases):  Cylinders vs kmeans init


FRES (Slice_start = 55; Block_size  = 5, Multicanal)
Init Cylinders (left)     -    Init kmeans (right)

       
- 1 empty phase with cylinders initialization.

ICM Segmentation (7 vs 8 phases) and Cylinders init


FRES (Slice_start = 44;Block_size  = 37)
Init Cylinders (8 phases)
SPGR:         FLAIR:


SPGR+FLAIR (7 phases):
SPGR+FLAIR (8 phases): 1 phase dispappears
                                                                                            

SPGR+FLAIR (8 phases): forced to preserve 8 phases