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PSNR of Contrast Enhancement Using Different Structuring Elements.
| No | Shape / Size | 5 | 10 | 15 | 20 |
|---|---|---|---|---|---|
| 1 | disk | 27.7242 | 26.6416 | 26.0005 | 25.5468 |
| 2 | square | 28.2586 | 27.4221 | 26.8821 | 26.4609 |
| 3 | diamond | 27.7127 | 26.839 | 26.2976 | 25.7776 |
| 4 | sphere | 27.5532 | 26.6099 | 26.0247 | 25.5606 |
