TABLE VII.
Approximate mean computational time (in minutes) using an Intel Xeon E5420 2.5GHz. The time per image corresponds to the label propagation using one example. Total time stands for the image segmentation process using the entire textbook (the Brainweb textbook contains 19 images with 11 labels, the IBSR textbook contains 17 images with 32 labels and the NA0-NIREP textbook contains 15 with 33 labels).
| data | method | 1 core | 8 cores | ||
|---|---|---|---|---|---|
| time per image | total time | time per image | total time | ||
|
| |||||
| Brainweb | non-rigid registration (using ANTs [5]) | 50 | 950 | - | - |
| pointwise/multipoint | 67 | 1200 | 9 | 170 | |
| fast multipoint | 10 | 185 | 1.3 | 25 | |
|
| |||||
| IBSR | non-rigid registration (using ANTs [5]) | 40 | 680 | - | - |
| pointwise/multipoint | 60 | 1000 | 8 | 130 | |
| fast multipoint | 10 | 165 | 1.2 | 22 | |
|
| |||||
| NIREP | non-rigid registration (using ANTs [5]) | 78 | 1170 | - | - |
| pointwise/multipoint | 58 | 840 | 7.5 | 110 | |
| fast multipoint | 10 | 145 | 1.3 | 19 | |