Table 1.
PSNR, MSE, and CNR Values of the Mean-, Median-, Bilateral-, and Gaussian-Filtered Images for 3 Image Sets, Each of 9 Imaging Time Points.
| PSNR | MSE | CNR | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | Median | Bilateral | Gaussian | Mean | Median | Bilateral | Gaussian | Mean | Median | Bilateral | Gaussian | ||
| Image set-1 | Imaging time point-1 | 52.479 | 57.675 | 52.125 | 53.414 | 0.367 | 0.111 | 0.398 | 0.296 | 1.714 | 1.714 | 1.715 | 1.715 |
| Imaging time point-2 | 45.778 | 53.347 | 45.44 | 46.557 | 1.718 | 0.300 | 1.856 | 1.436 | 3.575 | 3.568 | 3.576 | 3.573 | |
| Imaging time point-3 | 45.801 | 53.376 | 45.445 | 46.470 | 1.709 | 0.298 | 1.855 | 1.465 | 2.476 | 2.475 | 2.477 | 2.476 | |
| Imaging time point-4 | 47.360 | 54.357 | 46.890 | 48.194 | 1.193 | 0.238 | 1.330 | 0.985 | 15.171 | 14.120 | 15.216 | 15.142 | |
| Imaging time point-5 | 46.506 | 54.5261 | 46.092 | 47.331 | 1.453 | 0.229 | 1.598 | 1.201 | 8.064 | 8.046 | 8.069 | 8.062 | |
| Imaging time point-6 | 44.140 | 51.881 | 43.694 | 44.945 | 2.506 | 0.421 | 2.777 | 2.082 | 8.155 | 8.134 | 8.160 | 8.151 | |
| Imaging time point-7 | 46.550 | 54.167 | 46.054 | 47.348 | 1.438 | 0.249 | 1.612 | 1.197 | 3.196 | 3.196 | 3.206 | 3.196 | |
| Imaging time point-8 | 47.280 | 53.658 | 46.791 | 48.194 | 1.216 | 0.280 | 1.361 | 0.985 | 3.408 | 3.406 | 3.409 | 3.408 | |
| Imaging time point-9 | 40.339 | 46.881 | 39.954 | 41.039 | 5.655 | 1.404 | 6.222 | 4.852 | 2.692 | 2.689 | 2.693 | 2.692 | |
| Image set-2 | Imaging time point-1 | 42.974 | 47.904 | 42.705 | 43.504 | 3.278 | 1.053 | 3.487 | 2.901 | 31.907 | 31.644 | 31.944 | 31.866 |
| Imaging time point-2 | 42.291 | 46.931 | 42.038 | 42.851 | 3.836 | 1.318 | 4.066 | 3.372 | 41.833 | 41.058 | 41.947 | 41.716 | |
| Imaging time point-3 | 41.545 | 46.254 | 41.241 | 42.083 | 4.555 | 1.540 | 4.885 | 4.025 | 17.833 | 17.645 | 17.863 | 17.818 | |
| Imaging time point-4 | 41.584 | 46.551 | 41.235 | 42.196 | 4.514 | 1.438 | 4.892 | 3.920 | 21.874 | 21.676 | 21.922 | 21.851 | |
| Imaging time point-5 | 41.409 | 46.603 | 41.034 | 42.030 | 4.700 | 1.421 | 5.123 | 4.074 | 14.387 | 14.363 | 14.389 | 14.387 | |
| Imaging time point-6 | 40.387 | 45.661 | 39.999 | 41.028 | 5.947 | 1.765 | 6.503 | 5.131 | 18.563 | 18.394 | 18.596 | 18.533 | |
| Imaging time point-7 | 39.115 | 44.352 | 38.733 | 39.824 | 7.971 | 2.386 | 8.704 | 6.769 | 10.785 | 10.750 | 10.788 | 10.779 | |
| Imaging time point-8 | 39.513 | 44.744 | 39.131 | 40.229 | 7.273 | 2.180 | 7.941 | 6.168 | 15.093 | 14.927 | 15.124 | 15.071 | |
| Imaging time point-9 | 38.116 | 43.108 | 37.754 | 38.764 | 10.372 | 3.063 | 11.268 | 8.980 | 13.663 | 13.409 | 13.717 | 13.636 | |
| Image set-3 | Imaging time point-1 | 43.816 | 50.241 | 43.412 | 44.458 | 2.700 | 0.615 | 2.963 | 2.329 | 16.623 | 16.555 | 16.642 | 16.616 |
| Imaging time point-2 | 43.766 | 50.316 | 43.275 | 44.464 | 2.731 | 0.604 | 3.058 | 2.326 | 17.299 | 17.150 | 17.416 | 17.147 | |
| Imaging time point-3 | 43.486 | 49.789 | 43.031 | 44.179 | 2.913 | 0.682 | 3.235 | 2.483 | 37.818 | 37.241 | 37.893 | 37.707 | |
| Imaging time point-4 | 43.280 | 49.468 | 42.842 | 43.985 | 3.055 | 0.734 | 3.379 | 2.597 | 45.382 | 44.742 | 45.460 | 45.302 | |
| Imaging time point-5 | 43.350 | 49.345 | 42.849 | 44.104 | 3.006 | 0.755 | 3.373 | 2.527 | 22.434 | 22.328 | 22.539 | 22.414 | |
| Imaging time point-6 | 42.167 | 47.682 | 41.739 | 42.844 | 3.947 | 1.108 | 4.356 | 3.377 | 23.576 | 23.365 | 23.593 | 23.544 | |
| Imaging time point-7 | 39.012 | 44.222 | 38.624 | 39.720 | 8.163 | 2.459 | 8.925 | 6.934 | 25.983 | 25.216 | 26.115 | 25.872 | |
| Imaging time point-8 | 39.594 | 45.010 | 39.141 | 40.347 | 7.138 | 2.051 | 7.923 | 6.001 | 24.186 | 23.443 | 24.315 | 24.099 | |
| Imaging time point-9 | 38.549 | 44.102 | 38.123 | 39.332 | 8.587 | 2.599 | 9.467 | 7.206 | 20.212 | 19.704 | 20.308 | 20.175 | |
Abbreviations: CNR, contrast-to-noise ratio; MSE, mean-sqaured error; PSNR, peak signal-to-noise ratio.