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Table 2 The six morphological features calculated for each minimum area bounding box

From: The estimation of crop emergence in potatoes by UAV RGB imagery

Name

Meaning

Unit

Length

The length of the long side of the bounding box

cm

Length–width ratio

The ratio between the length and the width of the bounding box

Scalar

Area

Total area of the plant canopies within the bounding box

cm2

Perimeter

The perimeter of the connected contour of the canopy within the bounding box

cm

Convex area

Total area of the convex hull containing the connected contour of the canopy

cm2

Solidity

The ratio between the area of canopy and convex hull

Scalar