Table 3.
Performance evaluations on fused brain images of patients diagnosed with Alzheimer’s disease, based on different methods.
| Metric | IHS | NSCT+FL | DWT | NSCT+PCNN | Proposed | |
|---|---|---|---|---|---|---|
| Set 1 | Standard deviation | 66.1357 | 65.3766 | 51.0336 | 69.5392 | 66.5782 |
| Mean gradient | 9.9938 | 10.0303 | 6.509 | 10.0089 | 10.2068 | |
| Spatial frequency | 26.7087 | 26.7329 | 16.1614 | 26.6568 | 27.1771 | |
| Information entropy | 4.7735 | 4.834 | 5.4105 | 4.8036 | 4.8966 | |
| Set 2 | Standard deviation | 59.1931 | 59.2093 | 52.0837 | 61.4981 | 60.6457 |
| Mean gradient | 6.7482 | 7.0266 | 4.5756 | 7 | 7.0461 | |
| Spatial frequency | 19.0263 | 19.3264 | 11.8249 | 19.3257 | 19.512 | |
| Information entropy | 3.9901 | 4.1834 | 4.5922 | 4.0985 | 4.2156 | |
| Set 3 | Standard deviation | 56.0974 | 58.787 | 47.6032 | 56.0943 | 57.7578 |
| Mean gradient | 7.9023 | 8.111 | 5.4579 | 7.9592 | 7.966 | |
| Spatial frequency | 22.2846 | 22.4084 | 13.907 | 21.9421 | 22.0022 | |
| Information entropy | 3.895 | 4.1058 | 5.1943 | 4.2228 | 4.2897 |