Phenotypic types | Description | Units |
---|---|---|
Intensity-based | Average intensity (AI) | Gray-level |
Geometry-based (dimensional) | Width (W) | mm |
Height (H) | mm | |
Main axis length (MAL) | mm | |
Main axis width (MAW) | mm | |
Circumcircle radius (CR) | mm | |
Inscribed circle radius (ICR) | mm | |
Area (A) | mm2 | |
Perimeter (P) | mm | |
Convex hull area (CHA) | mm2 | |
Geometry-based (dimensionless) | Rectangularity (RA), \({\text{RA}} = \frac{{\text{A}}}{{{\text{MAL}} \times {\text{MAW}}}}\) | – |
Aspect ratio (AR), \({\text{AR}} = \frac{MAW}{{MAL}}\) | – | |
Circularity (CIR), \({\text{CIR}} = \frac{4\pi \cdot A}{{P^{2} }}\) | – | |
Eccentricity (ECC), \({\text{ECC}} = \frac{{\sqrt {MAL^{2} - MAW^{2} } }}{MAL}\) | – | |
Sphericity (SPH), \({\text{SPH}} = \frac{{{\text{ICR}}}}{{{\text{CR}}}}\) | – | |
Convexity (CV), \({\text{CV}} = \frac{A}{CHA}\) | – | |
Distribution-based | Distance from vascular bundle to stem center (DC) | mm |
Layer-based (equal-distance, equal-area) | Area of each layer (AEL) | mm2 |
Number of vascular bundles in each layer (NVBEL) | – | |
Area of vascular bundles in each layer (AVBEL) | mm2 | |
Voronoi area of vascular bundle in each layer (VAVBEL) | mm2 | |
Growth-based (epidermis, periphery, inner) | Area of each function zone (AEFZ) | mm2 |
Number of vascular bundles in periphery zone (NVBPZ) | – | |
Number of vascular bundles in inner zone (NVBIZ) | – | |
Area of vascular bundles in periphery zone (AVBPZ) | mm2 | |
Area of vascular bundles in inner zone (AVBIZ) | mm2 | |
Voronoi area of vascular bundle in periphery zone (VAVPZ) | mm2 | |
Voronoi area of vascular bundle in inner zone (VAVIZ) | mm2 |