Table 2.
The annotation content of SmartWoodID included in the database and derived from visual inspection of the sanded end-grain surface, encompassing 29 different macroscopic wood anatomical features (9) along with information on anomalies, mean colour values and wood density measurements
| Structure | Property | Character | Character states | Macroscopic feature number IAWA |
| Growth rings | Growth rings | Growth rings distinct | Present/absent/variable | 1 |
| Vessels | Porosity | Diffuse porous | Present/absent/variable | 3 |
| Semi-ring porous | Present/absent/variable | 4 | ||
| Ring porous | Present/absent/variable | 5 | ||
| Arrangement | Vessels in tangential bands | Present/absent/variable | 8 | |
| Vessels in radial pattern | Present/absent/variable | 9 | ||
| Vessels in diagonal pattern (echelon) | Present/absent/variable | 10 | ||
| Vessels in dendritic pattern (flame-like) | Present/absent/variable | 11 | ||
| Grouping | Solitary and in radial multiples of 2–3 vessels | Present/absent/variable | 12 | |
| Exclusively solitary (≥90%) | Present/absent/variable | 13 | ||
| Radial multiples of ≥4 common | Present/absent/variable/NA | 14 | ||
| Clusters common | Present/absent/variable/NA | 15 | ||
| Frequency | ≤5 vessels per square mm | Present/absent/variable | 16 | |
| 6–20 vessels/square mm | Present/absent/variable | 17 | ||
| >20 vessels/square mm | Present/absent/variable | 18 | ||
| Vessel diameter/ pore visibility | Small (not visible to the naked eye, <80 µm) | Present/absent/variable | 19 | |
| Medium (just visible to the naked eye, 80–130 µm) | Present/absent/variable | 20 | ||
| Large (commonly visible to the naked eye, >130 µm) | Present/absent/variable | 21 | ||
| Axial parenchyma | Distribution | Diffuse-in-aggregates | Present/absent/variable | 30 |
| Vasicentric | Present/absent/variable | 31 | ||
| Lozenge-aliform | Present/absent/variable/unilateral | 32 | ||
| Winged-aliform | Present/absent/variable/unilateral | 33 | ||
| Confluent | Present/absent/variable/unilateral | 34 | ||
| Banded | Majority wide/majority narrow/variable/absent | 35 | ||
| Parenchyma in marginal or seemingly marginal bands | Present/absent/variable | 38 | ||
| Reticulate | Present/absent/variable | 39 | ||
| Scalariform | Present/absent/variable | 40 | ||
| Rays | Width | Ray visibility to the naked eye on the transverse surface | Rays not visible/all rays visible/only larger rays visible | 43 |
| Rays per mm | Rays per mm | ≤ 4 mm/5–12 mm/> 12 mm/NA | 49 | |
| Anomalies | visible damage | insect holes | Present/absent/variable | – |
| fungi | Present/absent/variable | – | ||
| Mechanical damage | Present/absent/variable | – | ||
| Color | Red | Mean integer values | 0–255 | – |
| Green | Mean integer values | 0–255 | – | |
| Blue | Mean integer values | 0–255 | – | |
| Density measurement | Wood density | Density | [kg/m3] | – |