[Gdal-dev] Reading RPC

[Frank Warmerdam]

On Fri, 25 Mar 2005 11:51:02 -0800, Peng Gao <pgao at esri.com> wrote:
>  
>  
> 
> If  I have an image with RPC (e.g. a NITF image from Space Imaging), how do
> I read the RPC 
> 
> information via GDAL? Is there a function similar to Set/GetGCPs() for RPC? 

Peng,

The RPC information is transported as Metadata text.  You can use the
GDALExtractRPCInfo() function to extract the metadata and build it into
a GDALRPCInfo structure suitable for examination or use with the GDAL
RPC functions.

You could do something like this:

  char **papszMD;
  GDALRPCInfo sRPC;
   
  papszMD = GDALGetMetadata(hSrcDS,""); 
  if( GDALExtractRPCInfo( papszMD, &sRPC ) )
    printf( "Got RPC Info\n" );

Best regards,
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