+/*
+ double spc[3];
+ img->GetSpacing(spc);
+ printf ("EED ViewerNV::Process A %f %f %f \n", spc[0], spc[1], spc[2] );
+ img->SetSpacing( 1,1,1 );
+ img->Update( );
+ img->GetSpacing(spc);
+ img->PrintSelf(std::cout,(vtkIndent)2);
+ img->Print(std::cout);
+ printf ("EED ViewerNV::Process B %f %f %f \n", spc[0], spc[1], spc[2] );
+*/