Research Article
A Two-Stage Optimization Strategy for Fuzzy Object-Based Analysis Using Airborne LiDAR and High-Resolution Orthophotos for Urban Road Extraction
Table 3
Factors and their levels used to optimize image segmentation.
| Factor | Level 1 | Level 2 | Level 3 | Level 4 |
| Segmentation level 1 | Scale | 30 | 35 | 40 | 45 | Shape | 0.1 | 0.3 | 0.5 | 0.9 | Compactness | 0.1 | 0.3 | 0.5 | 0.9 |
| Segmentation level 2 | Scale | 105 | 110 | 115 | 120 | Shape | 0.1 | 0.3 | 0.5 | 0.9 | Compactness | 0.1 | 0.3 | 0.5 | 0.9 |
| Segmentation level 3 | Scale | 135 | 140 | 145 | — | Shape | 0.1 | 0.5 | 0.9 | — | Compactness | 0.1 | 0.5 | 0.9 | — |
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