WorldView 4 Spectral Indices
MAXAR • 119 indices available
Spectral Band Visualization
Band Configuration Details
Showing 119 of 119 indices
ARVI
Atmospherically Resistant Vegetation Index
Formula
(NIR - Red - γ(Red - Blue)) / (NIR + Red - γ(Red - Blue))
Vegetation index that minimizes atmospheric effects by incorporating blue band correction. More resistant to atmospheric scattering than NDVI, particularly useful in areas with atmospheric haze or high aerosol content.
Applications
DVI
Simple Ratio NIR/RED Difference Vegetation Index
Formula
NIR / Red
Simple vegetation index calculating the ratio of near-infrared to red reflectance. One of the earliest vegetation indices, useful for biomass estimation and vegetation analysis.
Applications
EVI
Enhanced Vegetation Index
Formula
2.5 * ((NIR - Red) / (NIR + 6 * Red - 7.5 * Blue + 1))
Improved vegetation index that reduces atmospheric and soil background effects. More sensitive to vegetation changes than NDVI.
Applications
Fe3+
Ferric Iron Index
Formula
Red / Green
Geological index for detecting ferric iron (Fe3+) concentrations in rocks and soils. Useful for lithologic mapping and identifying iron-rich mineral formations.
Applications
FOX
Ferric Oxides Index
Formula
NIR / Red
Geological index for detecting ferric oxide concentrations in rocks and soils. Useful for identifying iron-rich minerals and oxide formations in geological mapping and mineral exploration.
Applications
GDVI
Green Difference Vegetation Index
Formula
NIR - Green
Simple vegetation index that calculates the difference between near-infrared and green spectral bands. Useful for assessing vegetation health and density with straightforward band arithmetic.
Applications
GEMI
Global Environment Monitoring Index
Formula
n = (2*(NIR²-Red²) + 1.5*NIR + 0.5*Red)/(NIR+Red+0.5); GEMI = (n*(1-0.25*n) - Red - 0.125)/(1-Red)
Non-linear vegetation index designed for global vegetation monitoring from satellites. Less sensitive to soil background variations compared to NDVI and provides enhanced discrimination of vegetation states.
Applications
GNDVI
Green Normalized Difference Vegetation Index
Formula
(NIR - Green) / (NIR + Green)
Vegetation index that uses green wavelengths instead of red to assess vegetation characteristics. More sensitive to chlorophyll content and can be useful for detecting stress in dense vegetation canopies.
Applications
GOSAVI
Green Optimized Soil Adjusted Vegetation Index
Formula
(NIR - Green) / (NIR + Green + 0.16)
Soil-adjusted vegetation index that uses green wavelengths and incorporates a soil adjustment factor to minimize soil background influences. Optimized for vegetation monitoring in areas with varying soil conditions.
Applications
GRVI
Green Ratio Vegetation Index
Formula
NIR / Green
Simple vegetation index that calculates the ratio of near-infrared to green band reflectance. Useful for vegetation fraction estimation and assessing plant health using green wavelengths.
Applications
GSAVI
Green Soil Adjusted Vegetation Index
Formula
(NIR - Green) / (NIR + Green + L * (1 + L))
Soil-adjusted vegetation index using green wavelengths to minimize soil background interference. Incorporates a soil adjustment factor (L=0.5) to improve vegetation signal extraction.
Applications
H
Hue Index
Formula
arctan((2 * Red - Green - Blue) / (30.5 * (Green - Blue)))
Color index representing the dominant wavelength in visible spectrum. Used for color analysis and classification of materials based on their spectral hue characteristics.
Applications
I
Intensity Index
Formula
(1/30.5) * (Red + Green + Blue)
Color brightness measure representing the total reflectance across visible bands. Used for overall brightness analysis and intensity-based classification.
Applications
IPVI
Infrared Percentage Vegetation Index
Formula
NIR / (NIR + Red) * 2 * (NDVI + 1)
Enhanced vegetation index that combines simple ratio and NDVI approaches. Provides improved sensitivity to vegetation changes and reduced soil background effects.
Applications
MCARI
Modified Chlorophyll Absorption in Reflectance Index
Formula
((700nm - 670nm) - 0.2 * (700nm - 550nm)) * (700nm / 670nm)
Vegetation index designed to estimate chlorophyll content with reduced sensitivity to non-photosynthetic vegetation and soil background effects.
Applications
MCARI1
Modified Chlorophyll Absorption in Reflectance Index 1
Formula
1.2 * (2.5 * (800nm - 670nm) - 1.3 * (800nm - 550nm))
Enhanced vegetation chlorophyll index with improved sensitivity and reduced soil background effects. Modified version of MCARI using standard satellite bands.
Applications
MCARI2
Modified Chlorophyll Absorption in Reflectance Index 2
Formula
(1.5 * 2.5 * (800nm - 670nm) - 1.3 * (800nm - 550nm) * (2 * 800nm + 1)^2 - (6 * 800nm - 5 * 670nm) - 0.5)
Advanced vegetation chlorophyll index with enhanced sensitivity and reduced soil background effects. Improved version of MCARI for better leaf area index prediction.
Applications
MSAVI
Modified Soil Adjusted Vegetation Index
Formula
0.5 * (2 * NIR + 1 - sqrt((2 * NIR + 1)^2 - 8 * (NIR - Red)))
Self-adjusting vegetation index that minimizes soil background influence without requiring soil line parameters. Automatically adjusts for varying soil conditions.
Applications
MSAVIhyper
Modified Soil Adjusted Vegetation Index Hyper
Formula
0.5 * ((2 * 800nm + 1) - sqrt((2 * 800nm + 1)^2 - 8 * (800nm - 670nm)))
Hyperspectral version of MSAVI optimized for precise wavelength bands. Provides enhanced vegetation monitoring with reduced soil background effects.
Applications
MTVI1
Modified Triangular Vegetation Index 1
Formula
1.2 * (1.2 * (800nm - 550nm) - 2.5 * (670nm - 550nm))
Enhanced vegetation index combining green, red, and near-infrared reflectance for improved leaf area index estimation and vegetation monitoring.
Applications
MTVI2
Modified Triangular Vegetation Index 2
Formula
(1.5 * 1.2 * (800nm - 550nm) - 2.5 * (670nm - 550nm) * (2 * 800nm + 1)^2 - (6 * 800nm - 5 * 670nm) - 0.5)
Advanced triangular vegetation index with enhanced sensitivity to vegetation chlorophyll content and reduced soil background interference.
Applications
NDVI
Normalized Difference Vegetation Index
Formula
(NIR - Red) / (NIR + Red)
Most commonly used vegetation index to assess plant health and density. Values range from -1 to 1, with higher values indicating healthier vegetation.
Applications
NDVI
Normalized Difference Vegetation Index (Classic)
Formula
(NIR - Red) / (NIR + Red)
The most widely used vegetation index for assessing vegetation health, density, and photosynthetic activity. Classic formulation using standard red and near-infrared bands.
Applications
NDWI
Normalized Difference Water Index
Formula
(Green - NIR) / (Green + NIR)
Used to detect water bodies and monitor water content in vegetation. Positive values typically indicate water presence.
Applications
Norm G
Normalized Green
Formula
Green / (NIR + Red + Green)
Normalized green reflectance component for vegetation analysis. Provides relative contribution of green band reflectance in visible-NIR spectrum.
Applications
Norm NIR
Normalized Near-Infrared
Formula
NIR / (NIR + Red + Green)
Normalized near-infrared reflectance component for vegetation analysis. Highlights vegetation structural properties and biomass distribution.
Applications
Norm R
Normalized Red
Formula
Red / (NIR + Red + Green)
Normalized red reflectance component for vegetation analysis. Useful for analyzing chlorophyll absorption and vegetation stress indicators.
Applications
SAVI
Soil Adjusted Vegetation Index
Formula
((NIR - Red) / (NIR + Red + L)) * (1 + L)
Vegetation index that minimizes soil brightness influences. The L factor is typically set to 0.5 for moderate vegetation cover.
Applications
ARI
Anthocyanin Reflectance Index
Formula
(1 / 550nm) - (1 / 700nm)
The Anthocyanin Reflectance Index (ARI) was developed by Gitelson et al. to non-destructively estimate anthocyanin content in plant leaves. It isolates the anthocyanin absorption peak around 550nm by subtracting the 700nm band that reflects only chlorophyll. ARI is particularly useful for monitoring plant stress, senescence, and physiological status.
Applications
mARI
Modified Anthocyanin Reflectance Index
Formula
((1 / 550nm) - (1 / 700nm)) * NIR
The Modified Anthocyanin Reflectance Index (mARI or ARI2) is an enhanced version of ARI that corrects for leaf density and thickness by incorporating a near-infrared band. This modification improves the accuracy of anthocyanin estimation by accounting for leaf scattering properties.
Applications
BGI
Blue Green Pigment Index
Formula
450nm / 550nm
Blue Green Pigment Index (BGI) is a simple ratio index that compares reflectance in the blue (450nm) and green (550nm) regions of the spectrum. It is used to assess plant pigment content, particularly useful for detecting changes in chlorophyll and carotenoid concentrations that affect blue and green light absorption.
Applications
BI
Brightness Index
Formula
sqrt((RED^2 + GREEN^2) / 2)
The Brightness Index (BI) is a remote sensing index used to assess soil brightness, which is highly correlated with soil moisture, salt content, and organic matter. Developed by Mathieu and Escadafal, it provides valuable information about soil properties and fertility. As brightness increases, soil fertility typically decreases.
Applications
BI2
Second Brightness Index
Formula
sqrt((RED^2 + GREEN^2 + NIR^2) / 3)
The Second Brightness Index (BI2) is an enhanced version of the Brightness Index that includes the near-infrared band in addition to red and green bands. Developed by Escadafal and Huete, it provides improved assessment of soil properties, particularly soil organic carbon content and moisture levels.
Applications
BNDVI
Blue Normalized Difference Vegetation Index
Formula
(NIR - Blue) / (NIR + Blue)
A vegetation index that uses blue instead of red bands. BNDVI can be useful in situations where the red band is saturated or when assessing vegetation in water bodies where blue light penetrates better.
Applications
bNIRv
Blue Near-Infrared Reflectance of Vegetation
Formula
((N - B)/(N + B)) * N
Blue Near-Infrared Reflectance of Vegetation - A spectral index for vegetation applications.
Applications
BRI
Blue Red Pigment Index
Formula
450nm / 690nm
Blue Red Pigment Index (BRI) is a simple ratio index that compares reflectance in the blue (450nm) and red (690nm) regions of the spectrum. It is designed to assess plant pigment content and is sensitive to changes in chlorophyll and carotenoid concentrations, making it useful for stress detection and pigment analysis.
Applications
BWDRVI
Blue Wide Dynamic Range Vegetation Index
Formula
(0.1 * NIR - Blue) / (0.1 * NIR + Blue)
A blue-based variant of WDRVI that uses blue instead of red bands. This index maintains sensitivity at high biomass levels while using the blue spectral region, which can be advantageous in certain applications.
Applications
Ctr2
Simple Ratio 695/760 Carter2
Formula
695nm / 760nm
Carter2 (Ctr2) is a plant stress index that uses the ratio of reflectance at 695nm (red-edge) to 760nm (near-infrared). This index is particularly effective at detecting stress because it combines the stress-sensitive red-edge region with the NIR region where healthy vegetation shows high reflectance.
Applications
CIrededge
Chlorophyll Index Red Edge
Formula
(NIR / RE1) - 1
A simple chlorophyll index using the ratio of NIR to red edge reflectance minus 1. This index is sensitive to chlorophyll content variations and is useful for LAI estimation.
Applications
CI
Coloration Index
Formula
(RED - GREEN) / (RED + GREEN)
The Coloration Index (CI) was developed by Pouget et al. (1990) to characterize soil color properties in arid and semi-arid regions. Low CI values correlate with high concentrations of carbonates or sulfates, while higher values correlate with crusted soils and sands. The index helps monitor surface degradation and infiltrability variations.
Applications
CIrededge710
Chlorophyll Index RedEdge 710
Formula
750nm / 710nm - 1
Chlorophyll Index RedEdge 710 is a spectral index designed to assess chlorophyll content in vegetation, focusing on the red-edge spectral region. It utilizes the red-edge position to provide sensitive measurements of vegetation chlorophyll status.
Applications
CRI550
Carotenoid Reflectance Index 550
Formula
(1 / 510nm) - (1 / 550nm)
The Carotenoid Reflectance Index 550 (CRI550) was developed by Gitelson et al. (2002) to assess carotenoid content in plant leaves. It uses reciprocal reflectance at 510nm (sensitive to carotenoids) and 550nm (to remove chlorophyll effects), providing a non-destructive method for carotenoid estimation.
Applications
CRI700
Carotenoid Reflectance Index 700
Formula
(1 / 510nm) - (1 / 700nm)
The Carotenoid Reflectance Index 700 (CRI700) is an alternative formulation to CRI550 that uses the 700nm band instead of 550nm to minimize chlorophyll effects. This index provides better performance in leaves with high chlorophyll content and is particularly useful for mature vegetation.
Applications
Ctr3
Carter Stress Index 3
Formula
R_605 / NIR_760
A vegetation stress index that uses the ratio of reflectance at 605nm to 760nm. This index is sensitive to plant stress conditions and can detect early signs of vegetation health decline.
Applications
Ctr4
Carter Stress Index 4
Formula
RE1_710 / NIR_760
A vegetation stress index using the ratio of red edge (710nm) to NIR (760nm) reflectance. This index is particularly sensitive to changes in chlorophyll content and plant stress.
Applications
LCI
Leaf Chlorophyll Index
Formula
(NIR_850 - RE1_710) / (NIR_850 + Red_680)
An index specifically designed to estimate leaf chlorophyll content using red edge bands. LCI is sensitive to chlorophyll variations while being less affected by leaf structure and canopy architecture.
Applications
MCARI710
Modified Chlorophyll Absorption Ratio Index 710
Formula
((750nm - 710nm) - 0.2 * (750nm - 550nm)) * (750nm / 710nm)
Modified Chlorophyll Absorption Ratio Index 710 is designed to measure chlorophyll content in vegetation. It provides a method to estimate chlorophyll content by comparing reflectance at different wavelengths, particularly in the red and near-infrared regions of the spectrum.
Applications
MCARI/MTVI2
MCARI/MTVI2
Formula
((700nm - 670nm) - 0.2 * (700nm - 550nm)) * (700nm / 670nm) / (1.5 * (1.2 * (800nm - 550nm) - 2.5 * (670nm - 550nm)) / sqrt((2 * 800nm + 1)^2 - (6 * 800nm - 5 * sqrt(670nm)) - 0.5))
MCARI/MTVI2 is a ratio index that combines the Modified Chlorophyll Absorption Ratio Index (MCARI) with the Modified Triangular Vegetation Index 2 (MTVI2). This combination provides improved sensitivity to leaf chlorophyll content while reducing the influence of leaf area index variations, making it particularly useful for agricultural applications.
Applications
MCARI/OSAVI
MCARI/OSAVI
Formula
((700nm - 670nm) - 0.2 * (700nm - 550nm) * (700nm / 670nm)) / ((1 + 0.16) * (800nm - 670nm) / (800nm + 670nm + 0.16))
MCARI/OSAVI combines the Modified Chlorophyll Absorption Ratio Index (MCARI) with the Optimized Soil-Adjusted Vegetation Index (OSAVI). This ratio index is designed to estimate leaf chlorophyll content while minimizing the confounding effects of leaf area index and soil background reflectance.
Applications
MCARI/OSAVI750
MCARI/OSAVI750
Formula
((750nm - 705nm) - 0.2 * (750nm - 550nm) * (750nm / 705nm)) / ((1 + 0.16) * (750nm - 705nm) / (750nm + 705nm + 0.16))
MCARI/OSAVI750 is a vegetation index that combines the Modified Chlorophyll Absorption Ratio Index with the Optimized Soil-Adjusted Vegetation Index using red-edge bands. It is specifically designed to estimate chlorophyll content using the 750nm band instead of traditional NIR bands.
Applications
MSR670
Modified Simple Ratio 670,800
Formula
(NIR_800 - Red_670) / (NIR_800 + Red_670)
A modified simple ratio vegetation index optimized for boreal forest applications. It normalizes the difference between NIR and red reflectance, providing improved LAI estimation in forest environments.
Applications
MSR705
Modified Simple Ratio 705,750
Formula
(750nm - 705nm) / (750nm + 705nm)
Modified Simple Ratio 705,750 is a vegetation index that uses the red-edge spectral region to assess vegetation characteristics, particularly chlorophyll content. It calculates the normalized difference between reflectance at 750nm and 705nm wavelengths.
Applications
NDWI
Normalized Difference Water Index (McFeeters)
Formula
(Green - NIR) / (Green + NIR)
The Normalized Difference Water Index (NDWI) proposed by McFeeters (1996) is designed to delineate open water features and enhance their presence in remotely-sensed digital imagery. It uses reflected near-infrared radiation and visible green light to enhance water features while eliminating soil and terrestrial vegetation features.
Applications
NGRDI
Normalized Green Red Difference Index
Formula
(G - R) / (G + R)
Normalized Green Red Difference Index for vegetation applications
Applications
NHFD
Non-Homogeneous Feature Difference
Formula
(RE1 - A) / (RE1 + A)
Non-Homogeneous Feature Difference for urban applications
Applications
NIRv
Near-Infrared Reflectance of Vegetation
Formula
((N - R) / (N + R)) * N
Near-Infrared Reflectance of Vegetation for vegetation applications
Applications
NIRvH2
Hyperspectral Near-Infrared Reflectance of Vegetation
Formula
N - R - k * (lambdaN - lambdaR)
Hyperspectral Near-Infrared Reflectance of Vegetation for vegetation applications
Applications
NIRvP
Near-Infrared Reflectance of Vegetation and Incoming PAR
Formula
((N - R) / (N + R)) * N * PAR
Near-Infrared Reflectance of Vegetation and Incoming PAR for vegetation applications
Applications
NLI
Nonlinear vegetation index
Formula
(NIR² - Red) / (NIR² + Red)
A vegetation index that uses a nonlinear relationship between NIR and red bands to reduce the saturation effect at high biomass levels. The squared NIR term helps maintain sensitivity to vegetation changes in dense canopies.
Applications
NormG
Normalized Green
Formula
G/(N + G + R)
Normalized Green for vegetation applications
Applications
NormNIR
Normalized NIR
Formula
N/(N + G + R)
Normalized NIR for vegetation applications
Applications
NormR
Normalized Red
Formula
R/(N + G + R)
Normalized Red for vegetation applications
Applications
OCVI
Optimized Chlorophyll Vegetation Index
Formula
(N / G) * (R / G) ** cexp
Optimized Chlorophyll Vegetation Index for vegetation applications
Applications
OSAVI2
Optimized Soil Adjusted Vegetation Index 2
Formula
(1 + 0.16) * (750nm - 705nm) / (750nm + 705nm + 0.16)
OSAVI2 is a variant of the Optimized Soil Adjusted Vegetation Index that uses red-edge bands (750nm and 705nm) instead of traditional NIR and red bands. This modification improves sensitivity to vegetation changes while maintaining the soil brightness correction factor of 0.16, making it particularly effective for vegetation monitoring in areas with variable soil backgrounds.
Applications
OSI
Oil Spill Index
Formula
(G + R)/B
Oil Spill Index for water applications
Applications
PI
Plastic Index
Formula
N/(N + R)
Plastic Index for water applications
Applications
PISI
Perpendicular Impervious Surface Index
Formula
0.8192 * B - 0.5735 * N + 0.0750
Perpendicular Impervious Surface Index for urban applications
Applications
PRI
Photochemical Reflectance Index
Formula
(531nm - 570nm) / (531nm + 570nm)
The Photochemical Reflectance Index (PRI) was developed by Gamon, Penuelas, and Field (1992) to track diurnal changes in photosynthetic efficiency. PRI detects changes in xanthophyll cycle pigments that occur during plant stress, providing a measure of light use efficiency and general ecosystem health through remote sensing.
Applications
PSRI
Plant Senescence Reflectance Index
Formula
(678nm - 500nm) / 750nm
Plant Senescence Reflectance Index (PSRI) is designed to detect plant stress and senescence by measuring the ratio of carotenoid to chlorophyll pigments. It is sensitive to changes in leaf pigments that occur during plant aging, stress, or fruit ripening, making it useful for monitoring crop maturity and health status.
Applications
RCC
Red Chromatic Coordinate
Formula
R / (R + G + B)
Red Chromatic Coordinate for vegetation applications
Applications
REDSI
Red-Edge Disease Stress Index
Formula
((705.0 - 665.0) * (RE3 - R) - (783.0 - 665.0) * (RE1 - R)) / (2.0 * R)
Red-Edge Disease Stress Index for vegetation applications
Applications
REIP1
Red-Edge Inflection Point 1
Formula
700 + 40 * (((Red_670 + NIR_780) / 2 - RE1_700) / (RE2_740 - RE1_700))
An index that calculates the red edge inflection point, which is the wavelength of maximum slope in the red edge region. REIP is sensitive to chlorophyll content and vegetation stress.
Applications
REIP2
Red-Edge Inflection Point 2
Formula
702 + 40 * (((Red_667 + NIR_782) / 2 - RE1_702) / (RE2_742 - RE1_702))
A variant of the red edge inflection point calculation using slightly different wavelengths. This index provides an alternative measurement of the red edge position for chlorophyll assessment.
Applications
reNDVI
Red Edge NDVI
Formula
(RE2_750 - RE1_710) / (RE2_750 + RE1_710)
A normalized difference vegetation index using red edge bands instead of traditional red and NIR. This index is particularly sensitive to chlorophyll content and vegetation stress.
Applications
REP
Red-Edge Position Linear Interpolation
Formula
700 + 40 * ((670nm + 780nm)/2 - 700nm) / (740nm - 700nm)
Red-Edge Position Linear Interpolation (REP) is a spectral index that detects the red-edge position through linear interpolation. The red-edge position is a key indicator of vegetation health, chlorophyll content, and plant stress, representing the inflection point between red absorption and NIR reflectance.
Applications
RGBVI
Red Green Blue Vegetation Index
Formula
(G ** 2.0 - B * R)/(G ** 2.0 + B * R)
Red Green Blue Vegetation Index for vegetation applications
Applications
RGRI
Red-Green Ratio Index
Formula
R/G
Red-Green Ratio Index for vegetation applications
Applications
RI4XS
SPOT HRV XS-based Redness Index 4
Formula
(R**2.0)/(G**4.0)
SPOT HRV XS-based Redness Index 4 for soil applications
Applications
RNDVI
Reversed Normalized Difference Vegetation Index
Formula
(R - N)/(R + N)
Reversed Normalized Difference Vegetation Index for water applications
Applications
SARVI
Soil Adjusted and Atmospherically Resistant Vegetation Index
Formula
(1 + L)*(N - (R - (R - B))) / (N + (R - (R - B)) + L)
Soil Adjusted and Atmospherically Resistant Vegetation Index for vegetation applications
Applications
S
Saturation
Formula
(max(R,G,B) - min(R,G,B)) / max(R,G,B)
A spectral index that calculates the color saturation by comparing the maximum and minimum RGB values. Used for analyzing vegetation characteristics and spectral indices for degradation of natural environments.
Applications
SAVI2
Soil-Adjusted Vegetation Index 2
Formula
N / (R + (slb / sla))
Soil-Adjusted Vegetation Index 2 for vegetation applications
Applications
SAVIT
Soil-Adjusted Vegetation Index Thermal
Formula
(1.0 + L) * (N - (R * T / 10000.0)) / (N + (R * T / 10000.0) + L)
Soil-Adjusted Vegetation Index Thermal for burn applications
Applications
SeLI
Sentinel-2 LAI Green Index
Formula
(N2 - RE1) / (N2 + RE1)
Sentinel-2 LAI Green Index for vegetation applications
Applications
SEVI
Shadow-Eliminated Vegetation Index
Formula
(N/R) + fdelta * (1.0/R)
Shadow-Eliminated Vegetation Index for vegetation applications
Applications
SI
Shadow Index
Formula
((1.0 - B) * (1.0 - G) * (1.0 - R)) ** (1/3)
Shadow Index for vegetation applications
Applications
SIPI
Structure Insensitive Pigment Index
Formula
(N - A) / (N - R)
Structure Insensitive Pigment Index for vegetation applications
Applications
SR
Simple Ratio
Formula
N/R
Simple Ratio for vegetation applications
Applications
SR2
Simple Ratio (800 and 550 nm)
Formula
N/G
Simple Ratio (800 and 550 nm) for vegetation applications
Applications
SR3
Simple Ratio (860, 550 and 708 nm)
Formula
N2/(G * RE1)
Simple Ratio (860, 550 and 708 nm) for vegetation applications
Applications
SR555
Simple Ratio (555 and 750 nm)
Formula
RE2 / G
Simple Ratio (555 and 750 nm) for vegetation applications
Applications
TCARI
Transformed Chlorophyll Absorption Ratio
Formula
3 * ((RE1 - Red) - 0.2 * (RE1 - Green) * (RE1/Red))
An index designed to estimate vegetation chlorophyll content while minimizing the effects of leaf area index. TCARI is particularly useful for precision agriculture and crop health monitoring.
Applications
TCARI/OSAVI
TCARI/OSAVI
Formula
3 * (700nm - 670nm) - 0.2 * (700nm - 550nm) * (700nm / 670nm) / [(1 + 0.16) * (800nm - 670nm) / (800nm + 670nm + 0.16)]
TCARI/OSAVI is a combined vegetation index that integrates the Transformed Chlorophyll Absorption in Reflectance Index (TCARI) with the Optimized Soil-Adjusted Vegetation Index (OSAVI). It is designed for accurate estimation of crop chlorophyll content while minimizing the effects of soil background and leaf area index variations.
Applications
TCARI/OSAVI705
TCARI/OSAVI 705,750
Formula
3 * (750nm - 705nm) - 0.2 * (750nm - 550nm) * (750nm / 705nm) / ((1 + 0.16) * (750nm - 705nm) / (750nm + 705nm + 0.16))
TCARI/OSAVI 705,750 is a modified version of the TCARI/OSAVI index that uses the red-edge bands at 705nm and 750nm instead of traditional red and NIR bands. This modification improves sensitivity to chlorophyll content estimation while reducing the influence of leaf area index and soil background.
Applications
TCARIOSAVI
TCARI/OSAVI Ratio
Formula
(3 * ((RE1 - R) - 0.2 * (RE1 - G) * (RE1 / R))) / (1.16 * (N - R) / (N + R + 0.16))
TCARI/OSAVI Ratio for vegetation applications
Applications
TCI
Triangular Chlorophyll Index
Formula
1.2 * (RE1 - G) - 1.5 * (R - G) * (RE1 / R) ** 0.5
Triangular Chlorophyll Index - A spectral index for vegetation applications.
Applications
TDVI
Transformed Difference Vegetation Index
Formula
1.5 * ((N - R)/((N ** 2.0 + R + 0.5) ** 0.5))
Transformed Difference Vegetation Index - A spectral index for vegetation applications.
Applications
TGI
Triangular Greenness Index
Formula
- 0.5 * (190 * (R - G) - 120 * (R - B))
Triangular Greenness Index - A spectral index for vegetation applications.
Applications
TriVI
Triangular Vegetation Index
Formula
0.5 * (120 * (N - G) - 200 * (R - G))
Triangular Vegetation Index - A spectral index for vegetation applications.
Applications
TRRVI
Transformed Red Range Vegetation Index
Formula
((RE2 - R) / (RE2 + R)) / (((N - R) / (N + R)) + 1.0)
Transformed Red Range Vegetation Index - A spectral index for vegetation applications.
Applications
TSAVI
Transformed Soil Adjusted Vegetation Index
Formula
(a * (NIR - a * Red - b)) / (Red + a * NIR - a * b + X * (1 + a^2))
A vegetation index designed to minimize soil brightness effects on vegetation measurements. TSAVI requires knowledge of the soil line parameters (slope and intercept) for optimal performance.
Applications
TTVI
Transformed Triangular Vegetation Index
Formula
0.5 * ((865.0 - 740.0) * (RE3 - RE2) - (N2 - RE2) * (783.0 - 740))
Transformed Triangular Vegetation Index - A spectral index for vegetation applications.
Applications
TVI
Transformed Vegetation Index
Formula
sqrt((NIR - Red) / (NIR + Red) + 0.5)
A simple transformation of NDVI that shifts values to avoid negative numbers. TVI ranges from 0 to 1, making it easier to interpret and use in some applications.
Applications
TVI
Triangular Vegetation Index
Formula
0.5 * (120 * (750nm - 550nm) - 200 * (670nm - 550nm))
The Triangular Vegetation Index (TVI) was developed by Broge and Hansen (2000) based on the triangular area formed by green peak, near-infrared shoulder, and chlorophyll absorption minimum. TVI is sensitive to both chlorophyll content and LAI, capturing radiative energy absorbed by pigments and providing improved retrieval accuracy with reduced saturation effects.
Applications
TVI
Triangular Vegetation Index
Formula
0.5 * (120 * (RE1 - Green) - 200 * (Red - Green))
A vegetation index that uses the triangular area formed by green, red, and red-edge reflectance values. It is sensitive to leaf chlorophyll content and is particularly useful for estimating green LAI.
Applications
VARI
Visible Atmospherically Resistant Index
Formula
(G - R) / (G + R - B)
Visible Atmospherically Resistant Index - A spectral index for vegetation applications.
Applications
VARI700
Visible Atmospherically Resistant Index (700 nm)
Formula
(RE1 - 1.7 * R + 0.7 * B) / (RE1 + 1.3 * R - 1.3 * B)
Visible Atmospherically Resistant Index (700 nm) - A spectral index for vegetation applications.
Applications
VARIrededge
Visible Atmospherically Resistant Index Red Edge
Formula
(RE1 - Red) / (RE1 + Red)
A red edge variant of VARI that uses red edge bands instead of green. This index is designed to estimate vegetation fraction with reduced atmospheric effects.
Applications
VARI
Visible Atmospherically Resistant Index
Formula
(Green - Red) / (Green + Red - Blue)
The Visible Atmospherically Resistant Index (VARI) is designed to emphasize vegetation in the visible portion of the spectrum while mitigating illumination differences and atmospheric effects. It evaluates the 'greenness' in plants using only visible light bands, making it ideal for standard RGB cameras without requiring specialized multispectral sensors.
Applications
VgNIRBI
Visible Green-Based Built-Up Index
Formula
(G - N)/(G + N)
Visible Green-Based Built-Up Index - A spectral index for urban applications.
Applications
VI6T
VI6T Index
Formula
(N - T/10000.0)/(N + T/10000.0)
VI6T Index - A spectral index for burn applications.
Applications
VI700
Vegetation Index (700 nm)
Formula
(RE1 - R) / (RE1 + R)
Vegetation Index (700 nm) - A spectral index for vegetation applications.
Applications
VIG
Vegetation Index Green
Formula
(G - R) / (G + R)
Vegetation Index Green - A spectral index for vegetation applications.
Applications
VOG1
Vogelmann Red Edge Index 1
Formula
RE2 / RE1
A hyperspectral vegetation index that uses the red edge spectral region to assess vegetation health and chlorophyll content. It is particularly sensitive to vegetation stress and early detection of plant diseases.
Applications
VOG2
Vogelmann Red Edge Index 2
Formula
(RE2_734 - RE2_747) / (RE1_715 + RE1_726)
A vegetation index that uses specific red edge wavelengths to assess vegetation health and chlorophyll content. It is sensitive to changes in leaf internal structure and chlorophyll concentration.
Applications
VOG3
Vogelmann Red Edge Index 3
Formula
RE1_715 / RE1_705
A simple ratio vegetation index using red edge wavelengths to assess vegetation health and chlorophyll content. The ratio of 715nm to 705nm provides information about the red edge position and slope.
Applications
VrNIRBI
Visible Red-Based Built-Up Index
Formula
(R - N)/(R + N)
Visible Red-Based Built-Up Index - A spectral index for urban applications.
Applications
WDRVI
Wide Dynamic Range Vegetation Index
Formula
(0.1 * NIR - Red) / (0.1 * NIR + Red)
A vegetation index designed to improve sensitivity for moderate to high biomass conditions where traditional NDVI saturates. The weighting factor (0.1) enhances the dynamic range of the vegetation signal.
Applications
WDVI
Weighted Difference Vegetation Index
Formula
NIR - a * Red
A vegetation index that accounts for soil background by using a weighted difference between NIR and red bands. The weight parameter 'a' is the slope of the soil line, typically derived from bare soil measurements.
Applications