. 2019 May 3;7:e6926. doi: 10.7717/peerj.6926

Table 1. Common spectral indices.

Indices	Formulations	References
NDVI	(R₈₀₀ − R₆₈₀)/(R₈₀₀ + R₆₈₀)	(Haboudane et al., 2004)
NDVI705	(R₇₅₀ − R₇₀₅)/(R₇₅₀ + R₇₀₅)	(Sims & Gamon, 2002)
RVI	R₈₀₀/R₆₈₀	(Sims & Gamon, 2002)
NDCI	(R₇₆₂ − R₅₂₇)/(R₇₆₂ + R₅₂₇)	(Liang et al., 2015)
GNDVI	(R₇₅₀ − R₅₅₀)/(R₇₅₀ + R₅₅₀)	(Yao et al., 2017)
OSAVI	[(1 + 0.16)(R₈₀₀ − R₆₇₀)]/(R₈₀₀ + R₆₇₀ + 0.16)	(Haboudane et al., 2002)
NDRE	(R₇₄₀ − R₇₀₅)/(R₇₄₀ + R₇₀₅)	(Broge & Leblanc, 2001)
mNDVI705	(R₇₅₀ − R₇₀₅)/(R₇₅₀ + R₇₀₅ + 2R₄₄₅)	(Liang et al., 2015)
VOG1	R₇₄₀/R₇₂₀	(Vogelmann, Rock & Moss, 1993)
VOG3	(R₇₃₄ − R₇₄₇)/(R₇₁₅ + R₇₂₀)	(Vogelmann, Rock & Moss, 1993)
VOG2	(R₇₃₄ − R₇₄₇)/(R₇₁₅ + R₇₂₆)	(Vogelmann, Rock & Moss, 1993)
CARI	(R₇₀₀ − R₆₇₀)/0.2(R₇₀₀ + R₆₇₀)	(Main et al., 2011)
MTVI1	1.2[1.2(R₈₀₀ − R₅₅₀) − 2.5(R₆₇₀ − R₅₅₀)]	(Haboudane et al., 2004)
TVI	0.5[120(R₇₅₀ − R₅₅₀) − 2.5(R₆₇₀ − R₅₅₀)]	(Broge & Leblanc, 2001)
DVI	R₈₀₀ − R₆₈₀	(Tian et al., 2011)
RDVI	(R₈₀₀ − R₆₇₀)/(R₈₀₀ + R₆₇₀)^0.5	(Yao et al., 2017)
SPVI	1.48(R₈₀₀ − R₆₇₀) − 1.2\|R₅₃₀ − R₆₇₀\|	(Main et al., 2011)
WI/NDVI	(R₉₀₀/R₉₇₀)/[(R₈₀₀ − R₆₈₀)/(R₈₀₀ + R₆₈₀)]	(McCall et al., 2017)
EVI	2.5(R₈₀₀ − R₆₇₀)/(R₈₀₀ − 6R₆₇₀ − 7.5R₄₇₅ + 1)	(Huete et al., 1997)
NVI	(R₇₇₇ − R₇₄₇)/R₆₇₃	(Gupta, Vijayan & Prasad, 2001)
MSAVI	0.5(2R₈₀₀ + 1 − [(2R₈₀₀ + 1)² − 8(R₈₀₀ − R₆₇₀)]^0.5)	(Tian et al., 2011)
WI	R₉₀₀/R₉₇₀	(Peñuelas et al., 1993)
REP	700 + [40(R₆₇₀ + R₇₈₀)/2 − R₇₀₀]/(R₇₄₀ − R₇₀₀)	(Gupta, Vijayan & Prasad, 2001)
PRI	(R₅₃₁ − R₅₇₀)/(R₅₃₁ + R₅₇₀)	(Sims & Gamon, 2002)
MTVI2	$\frac{1.5 [1.2 (R_{800} - R_{550}) - 2.5 (R_{670} - R_{550})]}{{[{(2 R_{800} + 1)}^{2} - (6 R_{800} - 5 \sqrt{R_{670}}) - 0.5]}^{0.5}}$	(Yao et al., 2017)
TCARI2	3[R₇₅₀ − R₇₀₅ − 0.2(R₇₅₀ − R₅₅₀)(R₇₅₀/R₇₀₅)]	(Wu et al., 2008)
TCARI/OSAVI	TCARI/OSAVI	(Wu et al., 2008)
MCARI/OSAVI	MCARI/OSAVI	(McCall et al., 2017)
TCAR1	3[(R₇₀₀ − R₆₇₀) − 0.2(R₇₀₀ − R₅₅₀)(R₇₀₀/R₆₇₀)]	(Haboudane et al., 2002)
MCARI	[(R₇₀₀ − R₆₇₀) − 0.2(R₇₀₀ − R₅₅₀)(R₇₀₀/R₆₇₀)]	(Haboudane et al., 2002)