Research Article
Modified Discrete Grey Wolf Optimizer Algorithm for Multilevel Image Thresholding
Table 6
MEAN metrics of MTEMO, DE, ABC, GWO, and MDGWO.
| Image | | MTEMO | DE | ABC | GWO | MDGWO |
| Camerman | 2 | 17.584 | 12.4212 | 17.7638 | 14.634 | 17.471 | 3 | 21.976 | 17.3764 | 22.3059 | 21.107 | 21.919 | 4 | 26.586 | 21.7520 | 26.8409 | 24.927 | 27.480 | 5 | 30.506 | 26.2505 | 30.8328 | 30.436 | 30.548 |
| Lena | 2 | 17.831 | 12.7730 | 17.8139 | 17.809 | 18.396 | 3 | 22.120 | 17.6428 | 22.0832 | 22.074 | 22.856 | 4 | 25.999 | 21.8784 | 26.0615 | 25.318 | 26.447 | 5 | 29.787 | 25.7311 | 29.9664 | 29.252 | 30.381 |
| Baboon | 2 | 17.625 | 12.7333 | 17.6760 | 17.679 | 18.619 | 3 | 22.269 | 17.5005 | 22.1276 | 22.129 | 22.949 | 4 | 26.688 | 21.9010 | 26.3912 | 26.194 | 26.900 | 5 | 30.800 | 25.9681 | 30.3464 | 30.067 | 30.076 |
| Butterfly | 2 | 16.681 | 12.5796 | 17.4205 | 17.425 | 17.723 | 3 | 21.242 | 17.2545 | 22.2209 | 21.585 | 22.498 | 4 | 25.179 | 22.0176 | 26.3794 | 25.267 | 26.190 | 5 | 28.611 | 26.1795 | 30.6533 | 29.492 | 29.899 |
| Maize | 2 | 18.631 | 13.3566 | 18.6316 | 18.604 | 19.542 | 3 | 23.565 | 18.4245 | 23.2496 | 22.941 | 23.939 | 4 | 27.529 | 22.9813 | 27.3931 | 26.936 | 27.842 | 5 | 31.535 | 27.1709 | 31.2127 | 31.023 | 30.694 |
| Sea Star | 2 | 18.754 | 13.4104 | 18.7295 | 18.321 | 19.587 | 3 | 23.323 | 18.5516 | 23.2738 | 23.245 | 23.901 | 4 | 27.582 | 23.0719 | 27.5057 | 27.136 | 28.210 | 5 | 31.562 | 27.2551 | 31.4919 | 31.167 | 31.958 |
| Smiling Girl | 2 | 17.334 | 12.3892 | 17.3129 | 17.136 | 18.035 | 3 | 21.904 | 17.1339 | 21.8601 | 21.253 | 21.980 | 4 | 26.040 | 21.6541 | 25.9904 | 25.050 | 26.597 | 5 | 30.089 | 25.7130 | 30.0225 | 29.870 | 30.574 |
| Surfer | 2 | 18.339 | 13.0786 | 18.3393 | 18.283 | 18.869 | 3 | 23.231 | 18.1492 | 23.2889 | 23.243 | 24.135 | 4 | 27.863 | 23.0548 | 27.8017 | 27.275 | 27.447 | 5 | 31.823 | 27.4979 | 31.7335 | 31.384 | 31.325 |
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