[gdal-dev] Copy only georeference between two images

[Giacomo Piva]

I think that you want to work in this way:
You can "copy" the georeference from an already opened dataset 
(inputhDataset) ...

         pszTargetSRS = (char *)GDALGetProjectionRef(inputhDataset);
         GDALGetGeoTransform(inputhDataset, padfGeoTransform);
         nGCPCount = GDALGetGCPCount(inputhDataset);

         if(nGCPCount != 0){
             pasGCPList = GDALGetGCPs(inputhDataset);
             pszGCPProjection = GDALGetGCPProjection(inputhDataset);
         }

Then, you can "paste" the georeference information to the output dataset 
(outputhDataset) in this way:

         GDALSetProjection(outputhDataset, pszTargetSRS);
         GDALSetGeoTransform(outputhDataset, padfGeoTransform);

         if (nGCPCount != 0)
             
GDALSetGCPs(outputhDataset,nGCPCount,pasGCPList,pszGCPProjection);

where the used variables are:

     GDALDatasetH outputhDataset;
     GDALDatasetH inputhDataset;

     const GDAL_GCP *pasGCPList;
     const char *pszGCPProjection;
     int nGCPCount;
     double padfGeoTransform[6];
     char *pszTargetSRS;

On 09/13/2010 04:45 PM, canduc17 wrote:
> One simple question:
>
> I have two identical images, exept for their their georeferentiation. They
> represent the same scene, their sizes are identical, but one of them has a
> correct UTM georeferentiation and the second one hasn't.
>
> In which way can I copy and paste the correct georeferentiation from one to
> another?
>
> Thanks in advance.
>    


-- 
Giacomo Piva

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