Information for Sensor and Index

Formula

General Formula	$(n (1 - 0.25 n) - \frac{RED - 0.125}{1 - RED})$
Specific Formula	$(\frac{2 ({NIR}^{2} - {Red}^{2}) + 1.5 NIR + 0.5 Red}{NIR + Red + 0.5} (1 - 0.25 \frac{2 ({NIR}^{2} - {Red}^{2}) + 1.5 NIR + 0.5 Red}{NIR + Red + 0.5}) - \frac{Red - 0.125}{1 - Red})$
Calculated	Automatic
Comment

Sensor

Name	LandsatETM+ (Landsat7)
Full Name	Landsat Enhanced Thematic Mapper Plus
Bands	8
Spectrum [nm]	450-12500
Spat.Res. [m]	15-60
Inclination	98.2
Platform	Landsat
Operator	NASA / USGS
Date of Launch	1999-04-15
Comment
Usable for Indices	yes
Description

Index

Name	Global Environment Monitoring Index
Abbreviation	GEMI
Formula	$(n (1 - 0.25 n) - \frac{RED - 0.125}{1 - RED})$
Variables	n = ( 2 * ( NIR ^2 - RED ^2) + 1.5 * NIR + 0.5 * RED ) / ( NIR + RED + 0.5 )
Expl. of Variables
Wavelengths	640:760,780:1400
Source	Original formula
Description	Bannari 1996

References

Nr.	Author/Title	Year	Comment
1	Heiskanen, J. - Estimating aboveground tree biomass and leaf area index in a mountain birch forest using ASTER satellite data	2006
2	Rondeaux, GeneviÃ¨ve; Steven, Michael; Baret, FrÃ©dÃ©ric - Optimization of soil-adjusted vegetation indices	1996

Visualisation

Sensor

Index