Research Article
Comparative Study of Retinal Vessel Segmentation Based on Global Thresholding Techniques
Table 2
optimal parameter values for CLAHE global thresholding approaches.
| | Filtering | Filter | CLAHE | CLAHE | | Technique | Window size | Clip-limits | Number of tiles |
| | Adaptive filter | 4 × 4 | 0.05 | 75 × 75 | | Average filter | 3 × 3 | 0.05 | 75 × 75 | | Gaussian filter (sigma = 0.5) | 3 × 3 | 0.04 | 75 × 75 |
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