Revision as of 10:43, 27 October 2021

Using OTB SplitImage

1. Click the Open Data Source Manager and then Add raster layer and select a multiband raster file.
2. In processing toolbox, type split image into the search field to find the OTB --> Image Manipulation --> SplitImage tool and open it.

Choose the same Output pixel type like the input pixel type: here it is uint16.

Important: choose a physical output file: Save to file. Specify a file name with the extension .tif

Ignore the error message: the single band files were processed but need to be manually loaded into the map canvas.

Using GDAL Translate

• In the processing toolbar, type Translate into the search field to find the GDAL\OGR --> Translate (Convert format) tool and open it.
• Change the output data format to unsigned 16bit integer): -ot UInt16
• Click the button ... of Converted to select path and name of output file.

• Open the the OSGEO4W Shell. Start --> All Programs --> OSGeo4W --> OSGeo4W Shell
• Copy the content of the GDL/OGR console call and paste it into the OSGeo4W Shell.
• Edit the command in OSGeo4W Shell by adding the option -b 1 to output only the first band.
• Press Enter to execute the command in OSGeo4W Shell.

• Repeat the steps for other bands: change the output file name and edit the -b option accordingly.

• Create a multiband file with a spectral subset of 4 bands. Change the output file name and edit the command in OSGeo4W Shell additional creation options:
  • Converted output file:Subset_S2A_MSIL2A_20170619T_B02-

-B03-B04-B08.tif

• • Additional creation parameters: -b 2 -b 3 -b 4 -b 8
  • Press Enter to execute the command in OSGeo4W Shell.