DEM Conversion¶
Converts a geo-referenced DEM image into a general raster file compatible with OTB DEM handling.
Detailed description¶
In order to be understood by the Orfeo ToolBox and the underlying OSSIM library, a geo-referenced Digital Elevation Model image can be converted into a general raster image, which consists in 3 files with the following extensions: .ras, .geom and .omd. Once converted, you have to place these files in a separate directory, and you can then use this directory to set the “DEM Directory” parameter of a DEM based OTB application or filter.
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 DEMConvert .
| [1] | Table: Parameters table for DEM Conversion. |
| Parameter Key | Parameter Type | Parameter Description |
|---|---|---|
| in | Input image | Input image |
| out | Output File name | Output File name |
| inxml | XML input parameters file | XML input parameters file |
| outxml | XML output parameters file | XML output parameters file |
- Input geo-referenced DEM: Input geo-referenced DEM to convert to general raster format.
- Prefix of the output files: will be used to get the prefix (name withtout extensions) of the files to write. Three files - prefix.geom, prefix.omd and prefix.ras - will be generated.
- 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_DEMConvert -in QB_Toulouse_Ortho_Elev.tif -out outputDEM
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 DEMConvert application
DEMConvert = otbApplication.Registry.CreateApplication("DEMConvert")
# The following lines set all the application parameters:
DEMConvert.SetParameterString("in", "QB_Toulouse_Ortho_Elev.tif")
DEMConvert.SetParameterString("out", "outputDEM")
# The following line execute the application
DEMConvert.ExecuteAndWriteOutput()
Limitations¶
None
Authors¶
This application has been written by OTB-Team.