_thresholdMapper->SetInput( img );
_thresholdMapper->SetLookupTable( _thresholdTable );
_thresholdActor->SetInput( _thresholdMapper->GetOutput() );
_thresholdMapper->SetInput( img );
_thresholdMapper->SetLookupTable( _thresholdTable );
_thresholdActor->SetInput( _thresholdMapper->GetOutput() );
_scalarbarActor->SetLookupTable( _thresholdTable );
// _scalarbarActor->SetLookupTable( _thresholdMapper->GetLookupTable() );
_scalarbarActor->SetTitle("Value");
_scalarbarActor->SetLookupTable( _thresholdTable );
// _scalarbarActor->SetLookupTable( _thresholdMapper->GetLookupTable() );
_scalarbarActor->SetTitle("Value");