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Table 3
Selected SPoCA-suite parameter values for the detection of coronal holes.
| Coronal holes | EIT | EUVI | AIA |
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| Image transformation | sqrt | sqrt | sqrt |
| Bandpasses used (Å) | (171, 195) | 195 | 193 |
| Number of classes C | 4 | 4 | 4 |
| Classifier | SPoCA2 | SPoCA2 | HFCM |
| Center values | avg(fix 42) | med(all) | med(last 10) |
| Segmentation | Fix | Max | Max |
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