Trilateral parameters
|
Red edge amplitude
|
Dr
|
Maximum first derivative within 680–760
|
[38]
|
Red edge area
|
SDr
|
Sum of first derivative values in red edge
|
[38]
|
Yellow edge amplitude
|
Dy
|
Maximum first derivative within 560–640
|
[39]
|
Yellow edge area
|
SDy
|
Sum of first derivative values in yellow edge
|
[39]
|
Blue edge amplitude
|
Db
|
Maximum first derivative within 490–530
|
[39]
|
Blue edge area
|
SDb
|
Sum of first derivative values in blue edge
|
[39]
|
Vegetation index
|
Red edge ratio spectral index
|
RD
|
R740/R720
|
[40]
|
Red edge model index
|
CIred-edge
|
(R780/R710) − 1
|
[41]
|
Normalized difference red edge index
|
NDRE
|
(R790R720)/(R790 + R720)
|
[42]
|
Normalized difference spectral index
|
ND705
|
(R750 − R705)/(R750 + R705)
|
[43]
|
Near infrared ratio spectral index
|
NIR
|
R780/R740
|
[44]
|
Red edge ratio spectral index
|
RI-1 dB
|
R735/R720
|
[45]
|