. 2016 Jun 24;12:35. doi: 10.1186/s13007-016-0134-6

Table 4.

Calculated vegetation indices for each cameras, based on their spectral bands and correlation between vegetation index values extracted from UAS imagery and band equivalent reflectance values from Spectroradiometer

Index	Formula	Correlation
Index	Formula	Canon S100	MultiSpec 4C
NDVI	$\frac{N I R - R e d}{N I R + R e d}$	–	0.33
GNDVI	$\frac{N I R - G r e e n}{N I R + G r e e n}$	0.68	0.63
RENDVI	$\frac{N I R - R e d_e d g e}{N I R + R e d_e d g e}$	–	0.64
ENDVI	$\frac{N I R + G r e e n - 2 * B l u e}{N I R + G r e e n + 2 * B l u e}$	0.54	–
GIPVI	$\frac{N I R}{N I R + G r e e n}$	0.59	–

The values from Canon S100 values are before applying modified empirical line correction method

GNDVI values for Canon S100, and RENDVI for MultiSpec 4C have higher correlation with spectroradiometer compoare to other vegetation indices (shown in italics font)