VertexComponentAnalysis - Vertex Component Analysis

Find endmembers in hyperspectral images with Vertex Component Analysis

Detailed description

Applies the Vertex Component Analysis to an hyperspectral image to extract endmembers


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 VertexComponentAnalysis .

[1]Table: Parameters table for Vertex Component Analysis.
Parameter Key Parameter Name Parameter Type
in Input Image Input image
ne Number of endmembers Int
outendm Output Endmembers Output image
rand set user defined seed Int
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 hyperspectral data cube.
  • Number of endmembers: The number of endmembers to extract from the data cube.
  • Output Endmembers: The endmebers, stored in a one-line multi-spectral image, each pixel representing an endmember.
  • set user defined seed: Set specific seed. with integer value.
  • Load otb application from xml file: Load otb application from xml file.
  • Save otb application to xml file: Save otb application to xml file.


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

otbcli_VertexComponentAnalysis -in cupriteSubHsi.tif -ne 5 -outendm VertexComponentAnalysis.tif double

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


# Import the otb applications package
import otbApplication

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

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

VertexComponentAnalysis.SetParameterInt("ne", 5)

VertexComponentAnalysis.SetParameterString("outendm", "VertexComponentAnalysis.tif")
VertexComponentAnalysis.SetParameterOutputImagePixelType("outendm", 7)

# The following line execute the application




This application has been written by OTB-Team.