RadiometricIndices - Radiometric Indices¶

Compute radiometric indices.

Detailed description¶

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

Parameters¶

This section describes in details the parameters available for this application. Table [1] presents a summary of these parameters and the parameters keys to be used in command-line and programming languages. Application key is RadiometricIndices .

[1]	Table: Parameters table for Radiometric Indices.

Parameter Key	Parameter Name	Parameter Type
in	Input Image	Input image
out	Output Image	Output image
ram	Available RAM (Mb)	Int
channels	Channels selection	Group
channels.blue	Blue Channel	Int
channels.green	Green Channel	Int
channels.red	Red Channel	Int
channels.nir	NIR Channel	Int
channels.mir	Mir Channel	Int
list	Available Radiometric Indices	List
inxml	Load otb application from xml file	XML input parameters file
outxml	Save otb application to xml file	XML output parameters file

Input Image: Input image.

Output Image: Radiometric indices output image.

Available RAM (Mb): Available memory for processing (in MB).

[Channels selection]: Channels selection.

Blue Channel: Blue channel index.
Green Channel: Green channel index.
Red Channel: Red channel index.
NIR Channel: NIR channel index.
Mir Channel: Mir channel index.

Available Radiometric Indices: List of available radiometric indices with their relevant channels in brackets: 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).

Load otb application from xml file: Load otb application from xml file.

Save otb application to xml file: Save otb application to xml file.

Example¶

To run this example in command-line, use the following:

otbcli_RadiometricIndices -in qb_RoadExtract.tif -list Vegetation:NDVI Vegetation:RVI Vegetation:IPVI -out RadiometricIndicesImage.tif

To run this example from Python, use the following code snippet:

#!/usr/bin/python

# Import the otb applications package
import otbApplication

# The following line creates an instance of the RadiometricIndices application
RadiometricIndices = otbApplication.Registry.CreateApplication("RadiometricIndices")

# The following lines set all the application parameters:
RadiometricIndices.SetParameterString("in", "qb_RoadExtract.tif")

# The following line execute the application
RadiometricIndices.ExecuteAndWriteOutput()

Limitations¶

None

Authors¶

This application has been written by OTB-Team.