Revision as of 13:57, 2 December 2018

Using QGIS OTB plugin

Does currently not work in OTB plugin for QGIS 3.4.

In the search engine of the Processing Toolbox, type PCA and select DimensionalityReduction(pca) under Image Filtering of the Orfeo Toolbox.
Under the Parameter tab, select Multispectral band file as the input layer.
Select pca under the Algorithm tab.
Enter 4 as the number of components.
Specify the directory to save the output file.
Untick output file after running algorithm (inverse output image) option.
Click on Run to execute the algorithm.

Type into the search box of the Windows taskbar: mapla.bat. Click on mapla.bat to open Monteverdi Application Launcher.
In the search engine of Mapla, type Dimension and double click Dimensionality Reduction.
Specify a multispectral image as Input Image.
Specify directory and name for the Output image. Select the output data type float from the pull-down list.
Select PCA from the drop-down list as Algorithm.
Enter 4 as number of components.
Click on Execute.

@@ Line 11: / Line 11: @@
 = Using OTB standalone =
 * Type into the search box of the Windows taskbar: {{typed|text=mapla.bat}}. Click on mapla.bat to open  Monteverdi Application Launcher.
-* In the search engine of the Processing Toolbox, type {{typed|text=Dimension}} and double click '''Dimensionality Reduction'''.
+* In the search engine of Mapla, type {{typed|text=Dimension}} and double click '''Dimensionality Reduction'''.
 * Specify a multispectral image as Input Image.
 * Specify directory and name for the Output image. Select the output data type {{button|text=float}} from the pull-down list.