Tool Vegetation Index (Slope Based)
Slope based vegetation indices.
- Difference Vegetation Index
DVI = NIR - R - Normalized Difference Vegetation Index (Rouse et al. 1974)
NDVI = (NIR - R) / (NIR + R) - Ratio Vegetation Index (Richardson and Wiegand, 1977)
RVI = R / NIR - Normalized Ratio Vegetation Index (Baret and Guyot, 1991)
NRVI = (RVI - 1) / (RVI + 1) - Transformed Vegetation Index (Deering et al., 1975)
TVI = [(NIR - R) / (NIR + R) + 0.5]^0.5 - Corrected Transformed Ratio Vegetation Index (Perry and Lautenschlager, 1984)
CTVI = [(NDVI + 0.5) / abs(NDVI + 0.5)] * [abs(NDVI + 0.5)]^0.5 - Thiam's Transformed Vegetation Index (Thiam, 1997)
RVI = [abs(NDVI) + 0.5]^0.5 - Soil Adjusted Vegetation Index (Huete, 1988)
SAVI = [(NIR - R) / (NIR + R)] * (1 + S)
References
- McCloy, K.R. (2006): Resource Management Information Systems: Remote Sensing, GIS and Modelling. 2nd Edition, CRC Taylor & Francis, 575pp.
- Mroz, M., Sobieraj, A. (2004): Comparison of Several Vegetation Indices Calculated on the Basis of a Seasonal Spot XS Time Series, and their Suitability for Land Cover and Agricultural Crop Identification. Technical Sciences, No. 7, 39-66. http://www.uwm.edu.pl/wnt/technicalsc/ts7_2004/4_7_2004.pdf.
- Silleos, N.G., Alexandridis, T.K., Gitas, I.Z., Perakis, K. (2006): Vegetation Indices: Advances Made in Biomass Estimation and Vegetation Monitoring in the Last 30 Years. Geocarto International, 21:4, 21-28. http://dx.doi.org/10.1080/10106040608542399.
- Author: V.Olaya (c) 2004, O.Conrad (c) 2011
- Menu: Imagery|Vegetation Indices
Parameters
Name | Type | Identifier | Description | Constraints | |
---|---|---|---|---|---|
Input | Red Reflectance | Grid (input) | RED | - | - |
Near Infrared Reflectance | Grid (input) | NIR | - | - | |
Output | Difference Vegetation Index (*) | Grid (optional output) | DVI | - | - |
Normalized Difference Vegetation Index (*) | Grid (optional output) | NDVI | - | - | |
Ratio Vegetation Index (*) | Grid (optional output) | RVI | - | - | |
Normalized Ratio Vegetation Index (*) | Grid (optional output) | NRVI | - | - | |
Transformed Vegetation Index (*) | Grid (optional output) | TVI | - | - | |
Corrected Transformed Vegetation Index (*) | Grid (optional output) | CTVI | - | - | |
Thiam's Transformed Vegetation Index (*) | Grid (optional output) | TTVI | - | - | |
Soil Adjusted Vegetation Index (*) | Grid (optional output) | SAVI | - | - | |
Options | Grid system | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
Soil Adjustment Factor | Floating point | SOIL | For SAVI, suggested values (after Silleos et al. 2006): 1.0 = very low, 0.5 = intermediate, 0.25 = high densitity vegetation. | Minimum: 0.000000 Maximum: 1.000000 Default: 0.500000 | |
(*) optional |
Command-line
Usage: saga_cmd imagery_tools 1 [-RED <str>] [-NIR <str>] [-DVI <str>] [-NDVI <str>] [-RVI <str>] [-NRVI <str>] [-TVI <str>] [-CTVI <str>] [-TTVI <str>] [-SAVI <str>] [-SOIL <double>] -RED:<str> Red Reflectance Grid (input) -NIR:<str> Near Infrared Reflectance Grid (input) -DVI:<str> Difference Vegetation Index Grid (optional output) -NDVI:<str> Normalized Difference Vegetation Index Grid (optional output) -RVI:<str> Ratio Vegetation Index Grid (optional output) -NRVI:<str> Normalized Ratio Vegetation Index Grid (optional output) -TVI:<str> Transformed Vegetation Index Grid (optional output) -CTVI:<str> Corrected Transformed Vegetation Index Grid (optional output) -TTVI:<str> Thiam's Transformed Vegetation Index Grid (optional output) -SAVI:<str> Soil Adjusted Vegetation Index Grid (optional output) -SOIL:<double> Soil Adjustment Factor Floating point Minimum: 0.000000 Maximum: 1.000000 Default: 0.500000