Table 2 (a) Ablation study on the impact of preprocessing.
Metric | Without Preprocessing (mean ± 95% CI) | With Clip-BiRetinexNet (mean ± 95% CI) | Improvement (%) | Paired t-test p-value |
|---|---|---|---|---|
Segmentation (mPA) | 90.3% ± 1.6% | 97.6% ± 0.9% | +8.1% | 0.0002 |
Dice Similarity Coefficient | 92.5% ± 1.8% | 99.6% ± 0.5% | +7.7% | 0.0001 |
Classification Accuracy | 94.1% ± 1.4% | 99.2% ± 0.7% | +5.4% | 0.0003 |
Sensitivity | 93.2% ± 1.5% | 98.5% ± 0.9% | +5.7% | 0.0004 |
Specificity | 95.7% ± 1.3% | 98.9% ± 0.8% | +3.3% | 0.0006 |
AUC | 94.6% ± 1.2% | 98.5% ± 0.6% | +4.1% | 0.0009 |
Class | mPA (%) | Dice (%) |
|---|---|---|
Active bleeding | 97.9 | 99.4 |
Coagulated blood | 97.4 | 99.3 |
Esophagitis | 97.1 | 99.1 |
Normal | 98.0 | 99.5 |
Ulcerative colitis | 97.3 | 99.2 |
Vascular lesion | 98.1 | 99.6 |
