Orthorectifying an image
The following code example reads a rational polynomial coefficient (RPC) image and performs orthorectification using a digital elevation model (DEM):
[C#] public static void OrthorectifyImage(IRasterDataset2 rpcDataset, IRasterDataset
demDataset)
{
//rpcDataset - Represents a raster dataset that has RPC information.
//demDataset - Represents a raster dataset opened from a DEM of the same area.
//Get the RPCXform from the raster dataset.
IRaster2 raster=(IRaster2)rpcDataset.CreateFullRaster();
IGeodataXform rpcXform=raster.GeodataXform;
//Set the DEM, and so on.
ISensorXform sensor=(ISensorXform)rpcXform;
sensor.DEM=demDataset.CreateDefaultRaster();
sensor.CorrectGeoid=true;
//Save the result.
ISaveAs saveas=(ISaveAs)raster;
saveas.SaveAs(@"c:\temp\orthorectify_output.img", null, "IMAGINE Image");
}
Public Shared Sub OrthorectifyImage(ByVal rpcDataset As IRasterDataset2, ByVal demDataset As IRasterDataset)
'rpcDataset - Represents a raster dataset that has RPC information.
'demDataset - Represents a raster dataset opened from a DEM of the same area.
'Get the RPCXform from the raster dataset.
Dim raster As IRaster2=CType(rpcDataset.CreateFullRaster(), IRaster2)
Dim rpcXform As IGeodataXform=raster.GeodataXform
'Set the DEM, and so on.
Dim sensor As ISensorXform=CType(rpcXform, ISensorXform)
sensor.DEM=demDataset.CreateDefaultRaster()
sensor.CorrectGeoid=True
'Save the result.
Dim saveas As ISaveAs=CType(raster, ISaveAs)
saveas.SaveAs("c:\temp\orthorectify_output.img", Nothing, "IMAGINE Image")
End Sub
To use the code in this topic, reference the following assemblies in your Visual Studio project. In the code files, you will need using (C#) or Imports (VB .NET) directives for the corresponding namespaces (given in parenthesis below if different from the assembly name):
- ESRI.ArcGIS.System (ESRI.ArcGIS.esriSystem)
- ESRI.ArcGIS.Display
- ESRI.ArcGIS.Geometry
- ESRI.ArcGIS.Geodatabase
- ESRI.ArcGIS.DataSourcesRaster
| Development licensing | Deployment licensing |
|---|---|
| ArcGIS Desktop Advanced | ArcGIS Desktop Advanced |
| ArcGIS Desktop Standard | ArcGIS Desktop Standard |
| ArcGIS Desktop Basic | ArcGIS Desktop Basic |
| Engine Developer Kit | Engine |