DimensionalityReduction

Brief Description

Perform Dimension reduction of the input image.

Long Description

Performs dimensionality reduction on input image. PCA,NA-PCA,MAF,ICA methods are available. It is also possible to compute the inverse transform to reconstruct the image. It is also possible to optionnaly export the transformation matrix to a text file.

Parameters

[param] -in <string> The input image to apply dimensionality reduction.. Mandatory: True. Default Value: ""
[param] -out <string> output image. Components are ordered by decreasing eigenvalues.. Mandatory: True. Default Value: ""
[param] -rescale <string> . Mandatory: False. Default Value: "0"
[param] -outinv <string> reconstruct output image.. Mandatory: False. Default Value: ""
[param] -nbcomp <int32> Number of relevant components kept. By default all components are kept.. Mandatory: False. Default Value: "0"
[param] -normalize <boolean> center AND reduce data before Dimensionality reduction.. Mandatory: False. Default Value: "True"
[param] -outmatrix <string> Filename to store the transformation matrix (csv format). Mandatory: False. Default Value: ""
[param] -inxml <string> Load otb application from xml file. Mandatory: False. Default Value: ""
[param] -outxml <string> Save otb application to xml file. Mandatory: False. Default Value: ""

[choice] -method

[group] -pca

[group] -napca

[param] -method.napca.radiusx <int32> . Mandatory: True. Default Value: "1"
[param] -method.napca.radiusy <int32> . Mandatory: True. Default Value: "1"

[group] -maf

[group] -ica

[param] -method.ica.iter <int32> . Mandatory: False. Default Value: "20"
[param] -method.ica.mu <float> . Mandatory: False. Default Value: "1"

Limitations

This application does not provide the inverse transform and the transformation matrix export for the MAF.

Authors

OTB-Team

Example of use

in: cupriteSubHsi.tif
out: FilterOutput.tif
method: pca