Indices
Following indices / bands are available in the TSA submodule:
Index |
Name |
Formula |
Reference |
|---|---|---|---|
BLUE |
see Sensor Bands |
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GREEN |
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RED |
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RE1 |
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RE2 |
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RE3 |
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BNIR |
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NIR |
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SWIR1 |
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SWIR2 |
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VV |
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VH |
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NDVI |
Normalized Difference Vegetation Index |
(NIR - RED) / (NIR + RED) |
Tucker 1979 |
EVI |
Enhanced Vegetation Index |
G * ((NIR - RED) / (NIR + C1 * RED – C2 * BLUE + L)) with G = 2.5, L = 1, C1 = 6, C2 = 7.5 |
Huete et al. 2002 |
NBR |
Normalized Burn Ratio |
(NIR - SWIR2) / (NIR + SWIR2) |
Key & Benson 2005 |
NDTI |
Normalized Difference Tillage Index |
(SWIR1 - SWIR2) / (SWIR1 + SWIR2) |
Van Deventer et al. 1997 |
ARVI |
Atmospherically Resistant Vegetation Index |
(NIR - RB) / (NIR + RB) with RB = RED - (BLUE - RED) |
Kaufman & Tanré 1992 |
SAVI |
Soil Adjusted Vegetation Index |
(NIR - RED) / (NIR + RED + L) * (1 + L) with L = 0.5 |
Huete 1988 |
SARVI |
Soil adj. and Atm. Resistant Veg. Index |
(NIR - RB) / (NIR + RB + L) * (1 + L) with RB = RED - (BLUE - RED) with L = 0.5 |
Kaufman & Tanré 1992 |
TC-BRIGHT |
Tasseled Cap Brightness |
0.2043*BLUE + 0.4158*GREEN + 0.5524*RED + 0.5741*NIR + 0.3124*SWIR1 + 0.2303*SWIR2 |
Crist 1985 |
TC-GREEN |
Tasseled Cap Greeness |
-0.1603*BLUE - 0.2819*GREEN - 0.4934*RED + 0.7940*NIR - 0.0002*SWIR1 - 0.1446*SWIR2 |
Crist 1985 |
TC-WET |
Tasseled Cap Wetness |
0.0315*BLUE + 0.2021*GREEN + 0.3102*RED + 0.1594*NIR - 0.6806*SWIR1 - 0.6109*SWIR2 |
Crist 1985 |
TC-DI |
Tasseled Cap Disturbance Index |
TC-BRIGHT - (TC-GREEN + TC-WET) no rescaling applied (as opposed to Healey et al. 1995) |
Healey et al. 1995 |
NDBI |
Normalized Difference Built-Up Index |
(SWIR1 - NIR) / (SWIR1 + NIR) |
Zha et al. 2003 |
NDWI |
Normalized Difference Water Index |
(GREEN - NIR) / (GREEN + NIR) |
McFeeters 1996 |
MNDWI |
Modified Normalized Difference Water Index |
(GREEN - SWIR1) / (GREEN + SWIR1) |
Xu, H. 2006 |
NDMI |
Normalized Difference Moisture Index |
(NIR - SWIR1) / (NIR + SWIR1) |
Gao 1996 |
NDSI |
Normalized Difference Snow Index |
(GREEN - SWIR1) / (GREEN + SWIR1) |
Hall et al. 1995 |
SMA |
Spectral Mixture Analysis |
BOA = F * endmember + E Fraction F is retrieved using least-squares optimization from a couple of endmembers and BOA reflectance, E is model error |
Smith et al. 1990 |
kNDVI |
Kernel NDVI |
(1 - k) / (1 + k) with k = exp( -(NIR - RED)^2 / (2 * sigma^2) ) with sigma = 0.5 * (NIR + RED) |
Camps-Valls et al. 2021 |
NDRE1 |
Normalized Difference Red Edge Index 1 |
(REDEDGE2 - REDEDGE1) / (REDEDGE2 + REDEDGE1) |
Gitelson & Merzlyak 1994 |
NDRE2 |
Normalized Difference Red Edge Index 2 |
(REDEDGE3 - REDEDGE1) / (REDEDGE3 + REDEDGE1) |
Barnes et al. 2000 |
CIre |
Chlorophyll Index red-edge |
(REDEDGE3 / REDEDGE1) - 1 |
Gitelson et al. 2003 |
NDVIre1 |
Normalized Difference Vegetation Index red edge 1 |
(BNIR - REDEDGE1) / (BNIR + REDEDGE1) |
Gitelson & Merzlyak 1994 |
NDVIre2 |
Normalized Difference Vegetation Index red edge 2 |
(BNIR - REDEDGE2) / (BNIR + REDEDGE2) |
Fernandez-Manso et al. 2016 |
NDVIre3 |
Normalized Difference Vegetation Index red edge 3 |
(BNIR - REDEDGE3) / (BNIR + REDEDGE3) |
Fernandez-Manso et al. 2016 |
NDVIre1n |
Normalized Difference Vegetation Index red edge 1 narrow |
(NIR - REDEDGE1) / (NIR + REDEDGE1) |
Fernandez-Manso et al. 2016 |
NDVIre2n |
Normalized Difference Vegetation Index red edge 2 narrow |
(NIR - REDEDGE2) / (NIR + REDEDGE2) |
Fernandez-Manso et al. 2016 |
NDVIre3n |
Normalized Difference Vegetation Index red edge 3 narrow |
(NIR - REDEDGE3) / (NIR + REDEDGE3) |
Fernandez-Manso et al. 2016 |
MSRre |
Modified Simple Ratio red edge |
((BNIR / REDEDGE1) - 1) / sqrt((BNIR / REDEDGE1) + 1) |
Chen 1996 |
MSRren |
Modified Simple Ratio red edge narrow |
((NIR / REDEDGE1) - 1) / sqrt((NIR / REDEDGE1) + 1) |
Fernandez-Manso et al. 2016 |
CCI |
chlorophyll/carotenoid index |
(GREEN - RED) / (GREEN +RED) |
Gamon et al. 2016 |