DESCRIPTION
i.vi calculates vegetation indices based on biophysical parameters.
- RVI: ratio vegetation index:
- NDVI: Normalized Difference Vegetation Index
- IPVI: Infrared Percentage Vegetation Index
- DVI: Difference Vegetation Index
- PVI: Perpendicular Vegetation Index
- WDVI: Weighted Difference Vegetation Index
- SAVI: Soil Adjusted Vegetation Index
- GARI: Green atmospherically resistant vegetation index
- MSAVI: Modified Soil Adjusted Vegetation Index
- MSAVI2: second Modified Soil Adjusted Vegetation Index
- GEMI: Global Environmental Monitoring Index
- ARVI: atmospherically resistant vegetation indices
- GVI: Green Vegetation Index
Description
NDVI
- Data Type Band Numbers ([IR, Red])
- TM Bands= [4,3]
- MSS Bands = [7, 5]
- AVHRR Bands = [2, 1]
- SPOT XS Bands = [3, 2]
- AVIRIS Bands = [51, 29]
- example: (AVHRR) NDVI = (channel 2 - channel 1) / (channel 2 + channel 1)
NOTES
Originally from kepler.gps.caltech.edu
A FAQ on Vegetation in Remote Sensing
Written by Terrill W. Ray
Div. of Geological and Planetary Sciences
California Institute of Technology
email: terrill@mars1.gps.caltech.edu
Snail Mail: Terrill Ray
Division of Geological and Planetary Sciences
Caltech
Mail Code 170-25
Pasadena, CA 91125
TODO
SEE ALSO
i.albedo
AUTHORS
GRASS Development Team.
Last changed: $Date$