3.5.3 Radiometric indices extraction

This application computes radiometric indices using the channels of the input image. The output is a multi band image into which each channel is one of the selected indices.

The RadiometricIndices application has the following input parameters:

The available radiometric indices to be listed into -list with their relevant channels in brackets are:

Vegetation:NDVI - Normalized difference vegetation index (Red, NIR)  
Vegetation:TNDVI - Transformed normalized difference vegetation index (Red, NIR)  
Vegetation:RVI - Ratio vegetation index (Red, NIR)  
Vegetation:SAVI - Soil adjusted vegetation index (Red, NIR)  
Vegetation:TSAVI - Transformed soil adjusted vegetation index (Red, NIR)  
Vegetation:MSAVI - Modified soil adjusted vegetation index (Red, NIR)  
Vegetation:MSAVI2 - Modified soil adjusted vegetation index 2 (Red, NIR)  
Vegetation:GEMI - Global environment monitoring index (Red, NIR)  
Vegetation:IPVI - Infrared percentage vegetation index (Red, NIR)  
 
Water:NDWI - Normalized difference water index (Gao 1996) (NIR, MIR)  
Water:NDWI2 - Normalized difference water index (Mc Feeters 1996) (Green, NIR)  
Water:MNDWI - Modified normalized difference water index (Xu 2006) (Green, MIR)  
Water:NDPI - Normalized difference pond index (Lacaux et al.) (MIR, Green)  
Water:NDTI - Normalized difference turbidity index (Lacaux et al.) (Red, Green)  
 
Soil:RI - Redness index (Red, Green)  
Soil:CI - Color index (Red, Green)  
Soil:BI - Brightness index (Red, Green)  
Soil:BI2 - Brightness index 2 (NIR, Red, Green)

The application can be used like this, which leads to an output image with 3 bands, respectively with the Vegetation:NDVI, Vegetation:RVI and Vegetation:IPVI radiometric indices in this exact order:

otbcli_RadiometricIndices -in             InputImage  
                          -out            OutputImage  
                          -channels.red   3  
                          -channels.green 2  
                          -channels.nir   4  
                          -list           Vegetation:NDVI Vegetation:RVI  
                                          Vegetation:IPVI

or like this, which leads to a single band output image with the Water:NDWI2 radiometric indice:

otbcli_RadiometricIndices -in             InputImage  
                          -out            OutputImage  
                          -channels.red   3  
                          -channels.green 2  
                          -channels.nir   4  
                          -list           Water:NDWI2