Table 1 Definitions of nineteen leaf shape-related traits
From: A high-throughput stereo-imaging system for quantifying rape leaf traits during the seedling stage
Classification | Variable | Definition |
|---|---|---|
Scale-invariant traits | AA | The aspect ratio of leaf minimum circumscribed box |
R | The ratio of leaf area to minimum circumscribed box area | |
AC | The ratio of leaf area to leaf convex hull area | |
PC | The ratio of leaf circumference to leaf convex hull perimeter | |
S | The ratio of leaf area to the square of leaf convex hull perimeter | |
E | The ratio of long axis of ellipse to short axis of ellipse | |
FF | The ratio of leaf area to the square of leaf perimeter | |
PAR | The ratio of leaf circumference to leaf area | |
SFD | Reflect the effectiveness of the occupies space without image cropping [53] | |
IFD | Reflect the effectiveness of the occupies space with image cropping [53] | |
C | The ratio of inscribed circle radius to circumscribed circle radius | |
Cavity traits | NIC | The number of inner cavities |
APIC | The average perimeter of inner cavities | |
AAIC | The average area of inner cavities | |
Margin related traits | TNI | Total number of indents |
ENI | Effective number of indents | |
ADI | The average depth of indents | |
ADEI | The average depth of effective indents | |
AVE | The average calculated value of effectiveness |