ENH: Add possibility to access the OGRSpatialReference from the otbSpatialReference

Modules/Adapters/GdalAdapters/include/otbSpatialReference.h

@@ -176,6 +176,11 @@ public:
    */
   static void UTMFromGeoPoint(double lon, double lat, unsigned int& zone, hemisphere& hem);
 
+  /**
+   * Returns the internal OGRSpatialReference
+   */
+  OGRSpatialReference* getOGRSpatialReference();
+
 private:
   /// Constructor from wrapped type. ref will be cloned.
   SpatialReference(const OGRSpatialReference* ref);

Modules/Adapters/GdalAdapters/src/otbSpatialReference.cxx

@@ -294,6 +294,11 @@ void SpatialReference::UTMFromGeoPoint(double lon, double lat, unsigned int& zon
   assert(zone <= 60);
 }
 
+OGRSpatialReference* SpatialReference::getOGRSpatialReference()
+{
+  return m_SR.get();
+}
+
 #if GDAL_VERSION_NUM >= 3000000
 void SpatialReference::SetAxisMappingStrategy(OSRAxisMappingStrategy strategy)
 {