C++ Pointer::IsNull方法代码示例

void mitk::CorrectorAlgorithm::GenerateData()
{
  Image::Pointer inputImage = const_cast<Image*>(ImageToImageFilter::GetInput(0));

  if (inputImage.IsNull() || inputImage->GetDimension() != 2)
  {
    itkExceptionMacro("CorrectorAlgorithm needs a 2D image as input.");
  }

  if (m_Contour.IsNull())
  {
    itkExceptionMacro("CorrectorAlgorithm needs a Contour object as input.");
  }

  // copy the input (since m_WorkingImage will be changed later)
  m_WorkingImage = inputImage;

  TimeGeometry::Pointer originalGeometry = NULL;

  if (inputImage->GetTimeGeometry() )
  {
    originalGeometry = inputImage->GetTimeGeometry()->Clone();
    m_WorkingImage->SetTimeGeometry( originalGeometry );
  }
  else
  {
    itkExceptionMacro("Original image does not have a 'Time sliced geometry'! Cannot copy.");
  }

  Image::Pointer temporarySlice;
  // Convert to ipMITKSegmentationTYPE (because TobiasHeimannCorrectionAlgorithm relys on that data type)
  {
    itk::Image< ipMITKSegmentationTYPE, 2 >::Pointer correctPixelTypeImage;
    CastToItkImage( m_WorkingImage, correctPixelTypeImage );
    assert (correctPixelTypeImage.IsNotNull() );

    // possible bug in CastToItkImage ?
    // direction maxtrix is wrong/broken/not working after CastToItkImage, leading to a failed assertion in
    // mitk/Core/DataStructures/mitkSlicedGeometry3D.cpp, 479:
    // virtual void mitk::SlicedGeometry3D::SetSpacing(const mitk::Vector3D&): Assertion `aSpacing[0]>0 && aSpacing[1]>0 && aSpacing[2]>0' failed
    // solution here: we overwrite it with an unity matrix
    itk::Image< ipMITKSegmentationTYPE, 2 >::DirectionType imageDirection;
    imageDirection.SetIdentity();
    //correctPixelTypeImage->SetDirection(imageDirection);

    temporarySlice = this->GetOutput();
    //  temporarySlice = ImportItkImage( correctPixelTypeImage );
    m_FillColor = 1;
    m_EraseColor = 0;
    ImprovedHeimannCorrectionAlgorithm(correctPixelTypeImage);
    CastToMitkImage( correctPixelTypeImage, temporarySlice );
  }
  temporarySlice->SetTimeGeometry(originalGeometry);
}

void mitk::CollectionGrayOpening::PerformGrayOpening(mitk::DataCollection *dataCollection,
                                                     std::string name,
                                                     std::string suffix)
{
  for (size_t patient = 0; patient < dataCollection->Size(); ++patient)
  {
    DataCollection *dataPatient = dynamic_cast<DataCollection *>(dataCollection->GetData(patient).GetPointer());
    if (dataPatient == nullptr)
      MITK_ERROR << "PerformGrayOpening - Structure of DataCollection is invalid at patient level. Data inconsistent!";

    if (dataPatient->Size() == 0)
      MITK_ERROR << "Empty Patient Collective. Probably Fatal.";

    for (size_t timeStep = 0; timeStep < dataPatient->Size(); ++timeStep)
    {
      DataCollection *dataTimeStep = dynamic_cast<DataCollection *>(dataPatient->GetData(timeStep).GetPointer());
      if (dataTimeStep == nullptr)
        MITK_ERROR
          << "DilateBinaryByName- Structure of DataCollection is invalid at time step level. Data inconsistent!";

      // BinaryImage::Pointer itkImage = BinaryImage::New();
      ImageType::Pointer itkImage = ImageType::New();
      Image::Pointer tmp = dataTimeStep->GetMitkImage(name).GetPointer();
      if (tmp.IsNull())
        MITK_ERROR << "null";
      CastToItkImage(tmp, itkImage);
      if (itkImage.IsNull())
        MITK_ERROR << "Image " << name << " does not exist. Fatal.";

      typedef itk::FlatStructuringElement<3> StructuringElementType;
      StructuringElementType::RadiusType elementRadius;
      elementRadius.Fill(1);
      elementRadius[2] = 0;
      StructuringElementType structuringElement = StructuringElementType::Box(elementRadius);

      typedef itk::GrayscaleMorphologicalOpeningImageFilter<ImageType, ImageType, StructuringElementType>
        DilateImageFilterType;

      DilateImageFilterType::Pointer dilateFilter0 = DilateImageFilterType::New();
      dilateFilter0->SetInput(itkImage);
      dilateFilter0->SetKernel(structuringElement);
      dilateFilter0->Update();

      DilateImageFilterType::Pointer dilateFilter1 = DilateImageFilterType::New();
      dilateFilter1->SetInput(dilateFilter0->GetOutput());
      dilateFilter1->SetKernel(structuringElement);
      dilateFilter1->Update();

      Image::Pointer dil = GrabItkImageMemory(dilateFilter1->GetOutput());
      dataTimeStep->AddData(dil.GetPointer(), name + suffix, "");
    }
  }
}

void mitk::SetRegionTool::OnMouseReleased(StateMachineAction *, InteractionEvent *interactionEvent)
{
  auto *positionEvent = dynamic_cast<mitk::InteractionPositionEvent *>(interactionEvent);
  if (!positionEvent)
    return;

  assert(positionEvent->GetSender()->GetRenderWindow());
  // 1. Hide the feedback contour, find out which slice the user clicked, find out which slice of the toolmanager's
  // working image corresponds to that
  FeedbackContourTool::SetFeedbackContourVisible(false);
  mitk::RenderingManager::GetInstance()->RequestUpdate(positionEvent->GetSender()->GetRenderWindow());

  int timeStep = positionEvent->GetSender()->GetTimeStep();

  DataNode *workingNode(m_ToolManager->GetWorkingData(0));
  if (!workingNode)
    return;

  auto *image = dynamic_cast<Image *>(workingNode->GetData());
  const PlaneGeometry *planeGeometry((positionEvent->GetSender()->GetCurrentWorldPlaneGeometry()));
  if (!image || !planeGeometry)
    return;

  Image::Pointer slice = FeedbackContourTool::GetAffectedImageSliceAs2DImage(positionEvent, image);

  if (slice.IsNull())
  {
    MITK_ERROR << "Unable to extract slice." << std::endl;
    return;
  }

  ContourModel *feedbackContour(FeedbackContourTool::GetFeedbackContour());
  ContourModel::Pointer projectedContour = FeedbackContourTool::ProjectContourTo2DSlice(
    slice, feedbackContour, false, false); // false: don't add 0.5 (done by FillContourInSlice)
  // false: don't constrain the contour to the image's inside
  if (projectedContour.IsNull())
    return;

  auto *labelImage = dynamic_cast<LabelSetImage *>(image);
  int activeColor = 1;
  if (labelImage != nullptr)
  {
    activeColor = labelImage->GetActiveLabel()->GetValue();
  }

  mitk::ContourModelUtils::FillContourInSlice(
    projectedContour, timeStep, slice, image, m_PaintingPixelValue * activeColor);

  this->WriteBackSegmentationResult(positionEvent, slice);
}

/**
  Close the contour, project it to the image slice and fill it in 2D.
*/
bool mitk::ContourTool::OnMouseReleased( StateMachineAction*, InteractionEvent* interactionEvent )
{
  // 1. Hide the feedback contour, find out which slice the user clicked, find out which slice of the toolmanager's working image corresponds to that
  FeedbackContourTool::SetFeedbackContourVisible(false);

  mitk::InteractionPositionEvent* positionEvent = dynamic_cast<mitk::InteractionPositionEvent*>( interactionEvent );
  //const PositionEvent* positionEvent = dynamic_cast<const PositionEvent*>(stateEvent->GetEvent());
  if (!positionEvent) return false;

  assert( positionEvent->GetSender()->GetRenderWindow() );
  mitk::RenderingManager::GetInstance()->RequestUpdate( positionEvent->GetSender()->GetRenderWindow() );

  DataNode* workingNode( m_ToolManager->GetWorkingData(0) );
  if (!workingNode) return false;

  Image* image = dynamic_cast<Image*>(workingNode->GetData());
  const PlaneGeometry* planeGeometry( dynamic_cast<const PlaneGeometry*> (positionEvent->GetSender()->GetCurrentWorldPlaneGeometry() ) );
  if ( !image || !planeGeometry ) return false;

  const AbstractTransformGeometry* abstractTransformGeometry( dynamic_cast<const AbstractTransformGeometry*> (positionEvent->GetSender()->GetCurrentWorldPlaneGeometry() ) );
  if ( !image || abstractTransformGeometry ) return false;

    // 2. Slice is known, now we try to get it as a 2D image and project the contour into index coordinates of this slice
    Image::Pointer slice = SegTool2D::GetAffectedImageSliceAs2DImage( positionEvent, image );

    if ( slice.IsNull() )
    {
      MITK_ERROR << "Unable to extract slice." << std::endl;
      return false;
    }

    ContourModel* feedbackContour = FeedbackContourTool::GetFeedbackContour();
    ContourModel::Pointer projectedContour = FeedbackContourTool::ProjectContourTo2DSlice( slice, feedbackContour, true, false ); // true: actually no idea why this is neccessary, but it works :-(

    if (projectedContour.IsNull()) return false;

    int timestep = positionEvent->GetSender()->GetTimeStep();

    FeedbackContourTool::FillContourInSlice( projectedContour, timestep, slice, m_PaintingPixelValue );

    this->WriteBackSegmentationResult(positionEvent, slice);

    // 4. Make sure the result is drawn again --> is visible then.
    assert( positionEvent->GetSender()->GetRenderWindow() );

  return true;
}

bool mitk::SetRegionTool::OnMouseReleased( StateMachineAction*, InteractionEvent* interactionEvent )
{
  // 1. Hide the feedback contour, find out which slice the user clicked, find out which slice of the toolmanager's working image corresponds to that
  FeedbackContourTool::SetFeedbackContourVisible(false);

  mitk::InteractionPositionEvent* positionEvent = dynamic_cast<mitk::InteractionPositionEvent*>( interactionEvent );
  if (!positionEvent) return false;

  assert( positionEvent->GetSender()->GetRenderWindow() );
  mitk::RenderingManager::GetInstance()->RequestUpdate(positionEvent->GetSender()->GetRenderWindow());

  int timeStep = positionEvent->GetSender()->GetTimeStep();

  if (!m_FillContour && !m_StatusFillWholeSlice) return true;

  DataNode* workingNode( m_ToolManager->GetWorkingData(0) );
  if (!workingNode) return false;

  Image* image = dynamic_cast<Image*>(workingNode->GetData());
  const AbstractTransformGeometry* abstractTransformGeometry( dynamic_cast<const AbstractTransformGeometry*> (positionEvent->GetSender()->GetCurrentWorldPlaneGeometry() ) );
  const PlaneGeometry* planeGeometry( dynamic_cast<const PlaneGeometry*> (positionEvent->GetSender()->GetCurrentWorldPlaneGeometry() ) );
  if ( !image || !planeGeometry || abstractTransformGeometry ) return false;

  Image::Pointer slice = FeedbackContourTool::GetAffectedImageSliceAs2DImage( positionEvent, image );

  if ( slice.IsNull() )
  {
      MITK_ERROR << "Unable to extract slice." << std::endl;
      return false;
  }

  ContourModel* feedbackContour( FeedbackContourTool::GetFeedbackContour() );
  ContourModel::Pointer projectedContour = FeedbackContourTool::ProjectContourTo2DSlice( slice, feedbackContour, false, false ); // false: don't add 0.5 (done by FillContourInSlice)
  // false: don't constrain the contour to the image's inside
  if (projectedContour.IsNull()) return false;

  FeedbackContourTool::FillContourInSlice( projectedContour, timeStep, slice, m_PaintingPixelValue );

  this->WriteBackSegmentationResult(positionEvent, slice);

  m_WholeImageContourInWorldCoordinates = NULL;
  m_SegmentationContourInWorldCoordinates = NULL;

  return true;
}

bool mitk::AutoCropTool::ProcessOneWorkingData( DataNode* node )
{
  if (node)
  {
    Image::Pointer image = dynamic_cast<Image*>( node->GetData() );
    if (image.IsNull()) return false;
      
//     if (image->GetDimension() == 4)
//     {
//       Tool::ErrorMessage.Send("Cropping 3D+t segmentations is not implemented. Sorry. Bug #1281");
//       return false;
//     }

    AutoCropImageFilter::Pointer cropFilter = AutoCropImageFilter::New();
    cropFilter->SetInput( image );
    cropFilter->SetBackgroundValue( 0 );
    try
    {
      cropFilter->Update();

      image = cropFilter->GetOutput();
      if (image.IsNotNull())
      {
        node->SetData( image );
      }
      else
      {
        return false;
      }
    }
    catch(...)
    {
      return false;
    }
  }

  return true;
}

void mitk::SetRegionTool::OnMousePressed(StateMachineAction *, InteractionEvent *interactionEvent)
{
  auto *positionEvent = dynamic_cast<mitk::InteractionPositionEvent *>(interactionEvent);
  if (!positionEvent)
    return;

  m_LastEventSender = positionEvent->GetSender();
  m_LastEventSlice = m_LastEventSender->GetSlice();

  // 1. Get the working image
  Image::Pointer workingSlice = FeedbackContourTool::GetAffectedWorkingSlice(positionEvent);
  if (workingSlice.IsNull())
    return; // can't do anything without the segmentation

  // if click was outside the image, don't continue
  const BaseGeometry *sliceGeometry = workingSlice->GetGeometry();
  itk::Index<3> projectedPointIn2D;
  sliceGeometry->WorldToIndex(positionEvent->GetPositionInWorld(), projectedPointIn2D);
  if (!sliceGeometry->IsIndexInside(projectedPointIn2D))
  {
    MITK_ERROR << "point apparently not inside segmentation slice" << std::endl;
    return; // can't use that as a seed point
  }

  typedef itk::Image<DefaultSegmentationDataType, 2> InputImageType;
  typedef InputImageType::IndexType IndexType;
  typedef itk::ConnectedThresholdImageFilter<InputImageType, InputImageType> RegionGrowingFilterType;
  RegionGrowingFilterType::Pointer regionGrower = RegionGrowingFilterType::New();

  // convert world coordinates to image indices
  IndexType seedIndex;
  sliceGeometry->WorldToIndex(positionEvent->GetPositionInWorld(), seedIndex);

  // perform region growing in desired segmented region
  InputImageType::Pointer itkImage = InputImageType::New();
  CastToItkImage(workingSlice, itkImage);
  regionGrower->SetInput(itkImage);
  regionGrower->AddSeed(seedIndex);

  InputImageType::PixelType bound = itkImage->GetPixel(seedIndex);

  regionGrower->SetLower(bound);
  regionGrower->SetUpper(bound);
  regionGrower->SetReplaceValue(1);

  itk::BinaryFillholeImageFilter<InputImageType>::Pointer fillHolesFilter =
    itk::BinaryFillholeImageFilter<InputImageType>::New();

  fillHolesFilter->SetInput(regionGrower->GetOutput());
  fillHolesFilter->SetForegroundValue(1);

  // Store result and preview
  mitk::Image::Pointer resultImage = mitk::GrabItkImageMemory(fillHolesFilter->GetOutput());
  resultImage->SetGeometry(workingSlice->GetGeometry());
  // Get the current working color
  DataNode *workingNode(m_ToolManager->GetWorkingData(0));
  if (!workingNode)
    return;

  mitk::ImageToContourModelFilter::Pointer contourextractor = mitk::ImageToContourModelFilter::New();
  contourextractor->SetInput(resultImage);
  contourextractor->Update();

  mitk::ContourModel::Pointer awesomeContour = contourextractor->GetOutput();
  FeedbackContourTool::SetFeedbackContour(awesomeContour);
  FeedbackContourTool::SetFeedbackContourVisible(true);
  mitk::RenderingManager::GetInstance()->RequestUpdate(positionEvent->GetSender()->GetRenderWindow());
}

void QmitkCreatePolygonModelAction::Run(const QList<DataNode::Pointer> &selectedNodes)
{
  DataNode::Pointer selectedNode = selectedNodes[0];
  Image::Pointer image = dynamic_cast<mitk::Image *>(selectedNode->GetData());

  if (image.IsNull())
  {
    return;
  }

  try
  {
    // Get preference properties for smoothing and decimation
    IPreferencesService::Pointer prefService = Platform::GetServiceRegistry().GetServiceById<IPreferencesService>(IPreferencesService::ID);
    IPreferences::Pointer segPref = prefService->GetSystemPreferences()->Node("/org.mitk.views.segmentation");

    bool smoothingHint = segPref->GetBool("smoothing hint", true);
    ScalarType smoothing = segPref->GetDouble("smoothing value", 1.0);
    ScalarType decimation = segPref->GetDouble("decimation rate", 0.5);

    if (smoothingHint)
    {
      smoothing = 0.0;
      Vector3D spacing = image->GetGeometry()->GetSpacing();

      for (Vector3D::Iterator iter = spacing.Begin(); iter != spacing.End(); ++iter)
        smoothing = max(smoothing, *iter);
    }

    ShowSegmentationAsSurface::Pointer surfaceFilter = ShowSegmentationAsSurface::New();

    // Activate callback functions
    itk::SimpleMemberCommand<QmitkCreatePolygonModelAction>::Pointer successCommand = itk::SimpleMemberCommand<QmitkCreatePolygonModelAction>::New();
    successCommand->SetCallbackFunction(this, &QmitkCreatePolygonModelAction::OnSurfaceCalculationDone);
    surfaceFilter->AddObserver(ResultAvailable(), successCommand);

    itk::SimpleMemberCommand<QmitkCreatePolygonModelAction>::Pointer errorCommand = itk::SimpleMemberCommand<QmitkCreatePolygonModelAction>::New();
    errorCommand->SetCallbackFunction(this, &QmitkCreatePolygonModelAction::OnSurfaceCalculationDone);
    surfaceFilter->AddObserver(ProcessingError(), errorCommand);

    // set filter parameter
    surfaceFilter->SetDataStorage(*m_DataStorage);
    surfaceFilter->SetPointerParameter("Input", image);
    surfaceFilter->SetPointerParameter("Group node", selectedNode);
    surfaceFilter->SetParameter("Show result", true);
    surfaceFilter->SetParameter("Sync visibility", false);
    surfaceFilter->SetParameter("Median kernel size", 3u);
    surfaceFilter->SetParameter("Decimate mesh", m_IsDecimated);
    surfaceFilter->SetParameter("Decimation rate", (float) decimation);

    if (m_IsSmoothed)
    {
      surfaceFilter->SetParameter("Apply median", true);
      surfaceFilter->SetParameter("Smooth", true);
      surfaceFilter->SetParameter("Gaussian SD", sqrtf(smoothing)); // use sqrt to account for setting of variance in preferences
      StatusBar::GetInstance()->DisplayText("Smoothed surface creation started in background...");
    }
    else
    {
      surfaceFilter->SetParameter("Apply median", false);
      surfaceFilter->SetParameter("Smooth", false);
      StatusBar::GetInstance()->DisplayText("Surface creation started in background...");
    }

    surfaceFilter->StartAlgorithm();
  }
  catch(...)
  {
    MITK_ERROR << "Surface creation failed!";
  }
}

void mitk::CorrectorAlgorithm::GenerateData()
{
  Image::Pointer inputImage = const_cast<Image*>(ImageToImageFilter::GetInput(0));

  if (inputImage.IsNull() || inputImage->GetDimension() != 2)
  {
    itkExceptionMacro("CorrectorAlgorithm needs a 2D image as input.");
  }

  if (m_Contour.IsNull())
  {
    itkExceptionMacro("CorrectorAlgorithm needs a Contour object as input.");
  }

   // copy the input (since m_WorkingImage will be changed later)
  m_WorkingImage = Image::New();
  m_WorkingImage->Initialize( inputImage );
  m_WorkingImage->SetVolume( inputImage.GetPointer()->GetData() );

  if (inputImage->GetTimeSlicedGeometry() )
  {
    AffineGeometryFrame3D::Pointer originalGeometryAGF = inputImage->GetTimeSlicedGeometry()->Clone();
    TimeSlicedGeometry::Pointer originalGeometry = dynamic_cast<TimeSlicedGeometry*>( originalGeometryAGF.GetPointer() );
    m_WorkingImage->SetGeometry( originalGeometry );
  }
  else
  {
    itkExceptionMacro("Original image does not have a 'Time sliced geometry'! Cannot copy.");
  }

 
  // Convert to ipMITKSegmentationTYPE (because TobiasHeimannCorrectionAlgorithm relys on that data type)
  itk::Image< ipMITKSegmentationTYPE, 2 >::Pointer correctPixelTypeImage;
  CastToItkImage( m_WorkingImage, correctPixelTypeImage );
  assert (correctPixelTypeImage.IsNotNull() );

  // possible bug in CastToItkImage ?
  // direction maxtrix is wrong/broken/not working after CastToItkImage, leading to a failed assertion in
  // mitk/Core/DataStructures/mitkSlicedGeometry3D.cpp, 479:
  // virtual void mitk::SlicedGeometry3D::SetSpacing(const mitk::Vector3D&): Assertion `aSpacing[0]>0 && aSpacing[1]>0 && aSpacing[2]>0' failed
  // solution here: we overwrite it with an unity matrix
  itk::Image< ipMITKSegmentationTYPE, 2 >::DirectionType imageDirection;
  imageDirection.SetIdentity();
  correctPixelTypeImage->SetDirection(imageDirection);

  Image::Pointer temporarySlice = this->GetOutput();
  //  temporarySlice = ImportItkImage( correctPixelTypeImage );
  CastToMitkImage( correctPixelTypeImage, temporarySlice );

  TobiasHeimannCorrectionAlgorithm( temporarySlice->GetSliceData()->GetPicDescriptor() );

  // temporarySlice is our return value (user  can get it by calling GetOutput() )

  CalculateDifferenceImage( temporarySlice, inputImage );
  if ( m_DifferenceImage.IsNotNull() && inputImage->GetTimeSlicedGeometry() )
  {
    AffineGeometryFrame3D::Pointer originalGeometryAGF = inputImage->GetTimeSlicedGeometry()->Clone();
    TimeSlicedGeometry::Pointer originalGeometry = dynamic_cast<TimeSlicedGeometry*>( originalGeometryAGF.GetPointer() );
    m_DifferenceImage->SetGeometry( originalGeometry );
  }
  else
  {
    itkExceptionMacro("Original image does not have a 'Time sliced geometry'! Cannot copy.");
  }
}

void mitk::SurfaceBasedInterpolationController::Interpolate()
{
  if (m_MapOfContourLists[m_ActiveLabel].size() < 2)
  {
    // If no interpolation is possible reset the interpolation result
    m_InterpolationResult = nullptr;
    return;
  }

  m_InterpolateSurfaceFilter->Reset();

  // MLI TODO
  // m_InterpolateSurfaceFilter->SetReferenceImage( m_WorkingImage );

  // CreateDistanceImageFromSurfaceFilter::Pointer interpolateSurfaceFilter =
  // CreateDistanceImageFromSurfaceFilter::New();
  vtkSmartPointer<vtkAppendPolyData> polyDataAppender = vtkSmartPointer<vtkAppendPolyData>::New();

  for (unsigned int i = 0; i < m_MapOfContourLists[m_ActiveLabel].size(); i++)
  {
    mitk::ContourModelToSurfaceFilter::Pointer converter = mitk::ContourModelToSurfaceFilter::New();
    converter->SetInput(m_MapOfContourLists[m_ActiveLabel].at(i).first);
    converter->Update();

    mitk::Surface::Pointer surface = converter->GetOutput();
    surface->DisconnectPipeline();

    ReduceContourSetFilter::Pointer reduceFilter = ReduceContourSetFilter::New();
    reduceFilter->SetUseProgressBar(false);
    reduceFilter->SetInput(surface);
    reduceFilter->SetMinSpacing(m_MinSpacing);
    reduceFilter->SetMaxSpacing(m_MaxSpacing);
    reduceFilter->Update();

    ComputeContourSetNormalsFilter::Pointer normalsFilter = ComputeContourSetNormalsFilter::New();
    normalsFilter->SetUseProgressBar(false);
    normalsFilter->SetInput(reduceFilter->GetOutput());
    normalsFilter->SetMaxSpacing(m_MaxSpacing);
    // MLI TODO
    // normalsFilter->SetSegmentationBinaryImage(m_WorkingImage, m_ActiveLabel);
    // normalsFilter->Update();

    m_InterpolateSurfaceFilter->SetInput(i, normalsFilter->GetOutput());

    polyDataAppender->AddInputData(reduceFilter->GetOutput()->GetVtkPolyData());
  }

  polyDataAppender->Update();
  m_Contours->SetVtkPolyData(polyDataAppender->GetOutput());

  // update the filter and get the resulting distance-image
  m_InterpolateSurfaceFilter->Update();
  Image::Pointer distanceImage = m_InterpolateSurfaceFilter->GetOutput();
  if (distanceImage.IsNull())
  {
    // If no interpolation is possible reset the interpolation result
    m_InterpolationResult = nullptr;
    return;
  }

  // create a surface from the distance-image
  mitk::ImageToSurfaceFilter::Pointer imageToSurfaceFilter = mitk::ImageToSurfaceFilter::New();
  imageToSurfaceFilter->SetInput(distanceImage);
  imageToSurfaceFilter->SetThreshold(0);
  imageToSurfaceFilter->SetSmooth(true);
  imageToSurfaceFilter->SetSmoothIteration(20);
  imageToSurfaceFilter->Update();
  m_InterpolationResult = imageToSurfaceFilter->GetOutput();

  m_InterpolationResult->DisconnectPipeline();
}

void QmitkCreatePolygonModelAction::Run(const QList<DataNode::Pointer> &selectedNodes)
{
  DataNode::Pointer selectedNode = selectedNodes[0];
  Image::Pointer image = dynamic_cast<mitk::Image *>(selectedNode->GetData());
  
  if (image.IsNull())
    return;

  try
  {
    if (!m_IsSmoothed)
    {
      ShowSegmentationAsSurface::Pointer surfaceFilter = ShowSegmentationAsSurface::New();

      itk::SimpleMemberCommand<QmitkCreatePolygonModelAction>::Pointer successCommand = itk::SimpleMemberCommand<QmitkCreatePolygonModelAction>::New();
      successCommand->SetCallbackFunction(this, &QmitkCreatePolygonModelAction::OnSurfaceCalculationDone);
      surfaceFilter->AddObserver(ResultAvailable(), successCommand);

      itk::SimpleMemberCommand<QmitkCreatePolygonModelAction>::Pointer errorCommand = itk::SimpleMemberCommand<QmitkCreatePolygonModelAction>::New();
      errorCommand->SetCallbackFunction(this, &QmitkCreatePolygonModelAction::OnSurfaceCalculationDone);
      surfaceFilter->AddObserver(ProcessingError(), errorCommand);

      surfaceFilter->SetDataStorage(*m_DataStorage);
      surfaceFilter->SetPointerParameter("Input", image);
      surfaceFilter->SetPointerParameter("Group node", selectedNode);
      surfaceFilter->SetParameter("Show result", true);
      surfaceFilter->SetParameter("Sync visibility", false);
      surfaceFilter->SetParameter("Smooth", false);
      surfaceFilter->SetParameter("Apply median", false);
      surfaceFilter->SetParameter("Median kernel size", 3u);
      surfaceFilter->SetParameter("Gaussian SD", 1.5f);
      surfaceFilter->SetParameter("Decimate mesh", m_IsDecimated);
      surfaceFilter->SetParameter("Decimation rate", 0.8f);

      StatusBar::GetInstance()->DisplayText("Surface creation started in background...");

      surfaceFilter->StartAlgorithm();
    }
    else
    {
      ShowSegmentationAsSmoothedSurface::Pointer surfaceFilter = ShowSegmentationAsSmoothedSurface::New();

      itk::SimpleMemberCommand<QmitkCreatePolygonModelAction>::Pointer successCommand = itk::SimpleMemberCommand<QmitkCreatePolygonModelAction>::New();
      successCommand->SetCallbackFunction(this, &QmitkCreatePolygonModelAction::OnSurfaceCalculationDone);
      surfaceFilter->AddObserver(mitk::ResultAvailable(), successCommand);

      itk::SimpleMemberCommand<QmitkCreatePolygonModelAction>::Pointer errorCommand = itk::SimpleMemberCommand<QmitkCreatePolygonModelAction>::New();
      errorCommand->SetCallbackFunction(this, &QmitkCreatePolygonModelAction::OnSurfaceCalculationDone);
      surfaceFilter->AddObserver(mitk::ProcessingError(), errorCommand);

      surfaceFilter->SetDataStorage(*m_DataStorage);
      surfaceFilter->SetPointerParameter("Input", image);
      surfaceFilter->SetPointerParameter("Group node", selectedNode);

      berry::IWorkbenchPart::Pointer activePart =
          berry::PlatformUI::GetWorkbench()->GetActiveWorkbenchWindow()->GetActivePage()->GetActivePart();
      mitk::IRenderWindowPart* renderPart = dynamic_cast<mitk::IRenderWindowPart*>(activePart.GetPointer());
      mitk::SliceNavigationController* timeNavController = 0;
      if (renderPart != 0)
      {
        timeNavController = renderPart->GetRenderingManager()->GetTimeNavigationController();
      }

      int timeNr = timeNavController != 0 ? timeNavController->GetTime()->GetPos() : 0;
      surfaceFilter->SetParameter("TimeNr", timeNr);

      IPreferencesService::Pointer prefService = Platform::GetServiceRegistry().GetServiceById<IPreferencesService>(IPreferencesService::ID);
      IPreferences::Pointer segPref = prefService->GetSystemPreferences()->Node("/org.mitk.views.segmentation");

      bool smoothingHint = segPref->GetBool("smoothing hint", true);
      float smoothing = (float)segPref->GetDouble("smoothing value", 1.0);
      float decimation = (float)segPref->GetDouble("decimation rate", 0.5);
      float closing = (float)segPref->GetDouble("closing ratio", 0.0);
      
      if (smoothingHint)
      {
        smoothing = 0.0;
        Vector3D spacing = image->GetGeometry()->GetSpacing();
        
        for (Vector3D::Iterator iter = spacing.Begin(); iter != spacing.End(); ++iter)
          smoothing = max(smoothing, *iter);
      }

      surfaceFilter->SetParameter("Smoothing", smoothing);
      surfaceFilter->SetParameter("Decimation", decimation);
      surfaceFilter->SetParameter("Closing", closing);

      ProgressBar::GetInstance()->AddStepsToDo(8);
      StatusBar::GetInstance()->DisplayText("Smoothed surface creation started in background...");

      try {
        surfaceFilter->StartAlgorithm();
      } catch (...)
      {
        MITK_ERROR<<"Error creating smoothed polygon model: Not enough memory!";
      }
    }
  }
  catch(...)
  {
//.........这里部分代码省略.........

bool mitk::SetRegionTool::OnMousePressed ( StateMachineAction*, InteractionEvent* interactionEvent )
{
  mitk::InteractionPositionEvent* positionEvent = dynamic_cast<mitk::InteractionPositionEvent*>( interactionEvent );
  //const PositionEvent* positionEvent = dynamic_cast<const PositionEvent*>(stateEvent->GetEvent());
  if (!positionEvent) return false;

  m_LastEventSender = positionEvent->GetSender();
  m_LastEventSlice = m_LastEventSender->GetSlice();
  int timeStep = positionEvent->GetSender()->GetTimeStep();

  // 1. Get the working image
  Image::Pointer workingSlice   = FeedbackContourTool::GetAffectedWorkingSlice( positionEvent );
  if ( workingSlice.IsNull() ) return false; // can't do anything without the segmentation

  // if click was outside the image, don't continue
  const BaseGeometry* sliceGeometry = workingSlice->GetGeometry();
  itk::Index<2> projectedPointIn2D;
  sliceGeometry->WorldToIndex( positionEvent->GetPositionInWorld(), projectedPointIn2D );
  if ( !sliceGeometry->IsIndexInside( projectedPointIn2D ) )
  {
    MITK_ERROR << "point apparently not inside segmentation slice" << std::endl;
    return false; // can't use that as a seed point
  }

    // Convert to ipMITKSegmentationTYPE (because ipMITKSegmentationGetContour8N relys on that data type)
    itk::Image< ipMITKSegmentationTYPE, 2 >::Pointer correctPixelTypeImage;
    CastToItkImage( workingSlice, correctPixelTypeImage );
    assert (correctPixelTypeImage.IsNotNull() );

  // possible bug in CastToItkImage ?
  // direction maxtrix is wrong/broken/not working after CastToItkImage, leading to a failed assertion in
  // mitk/Core/DataStructures/mitkSlicedGeometry3D.cpp, 479:
  // virtual void mitk::SlicedGeometry3D::SetSpacing(const mitk::Vector3D&): Assertion `aSpacing[0]>0 && aSpacing[1]>0 && aSpacing[2]>0' failed
  // solution here: we overwrite it with an unity matrix
  itk::Image< ipMITKSegmentationTYPE, 2 >::DirectionType imageDirection;
  imageDirection.SetIdentity();
  correctPixelTypeImage->SetDirection(imageDirection);

    Image::Pointer temporarySlice = Image::New();
  //  temporarySlice = ImportItkImage( correctPixelTypeImage );
    CastToMitkImage( correctPixelTypeImage, temporarySlice );


  // check index positions
  mitkIpPicDescriptor* originalPicSlice = mitkIpPicNew();
  CastToIpPicDescriptor( temporarySlice, originalPicSlice );

  int m_SeedPointMemoryOffset = projectedPointIn2D[1] * originalPicSlice->n[0] + projectedPointIn2D[0];

  if ( m_SeedPointMemoryOffset >= static_cast<int>( originalPicSlice->n[0] * originalPicSlice->n[1] ) ||
       m_SeedPointMemoryOffset < 0 )
  {
    MITK_ERROR << "Memory offset calculation if mitk::SetRegionTool has some serious flaw! Aborting.." << std::endl;
    return false;
  }

  // 2. Determine the contour that surronds the selected "piece of the image"

  // find a contour seed point
  unsigned int oneContourOffset = static_cast<unsigned int>( m_SeedPointMemoryOffset ); // safe because of earlier check if m_SeedPointMemoryOffset < 0

  /**
    * The logic of finding a starting point for the contour is the following:
    *
    *  - If the initial seed point is 0, we are either inside a hole or outside of every segmentation.
    *    We move to the right until we hit a 1, which must be part of a contour.
    *
    *  - If the initial seed point is 1, then ...
    *    we now do the same (running to the right) until we hit a 1
    *
    *  In both cases the found contour point is used to extract a contour and
    *  then a test is applied to find out if the initial seed point is contained
    *  in the contour. If this is the case, filling should be applied, otherwise
    *  nothing is done.
    */
  unsigned int size = originalPicSlice->n[0] * originalPicSlice->n[1];
/*
  unsigned int rowSize = originalPicSlice->n[0];
*/
  ipMITKSegmentationTYPE* data = static_cast<ipMITKSegmentationTYPE*>(originalPicSlice->data);

  if ( data[oneContourOffset] == 0 ) // initial seed 0
  {
    for ( ; oneContourOffset < size; ++oneContourOffset )
    {
      if ( data[oneContourOffset] > 0 ) break;
    }
  }
  else if ( data[oneContourOffset] == 1 ) // initial seed 1
  {
    unsigned int lastValidPixel = size-1; // initialization, will be changed lateron
    bool inSeg = true;    // inside segmentation?
    for ( ; oneContourOffset < size; ++oneContourOffset )
    {
      if ( ( data[oneContourOffset] == 0 ) && inSeg ) // pixel 0 and inside-flag set: this happens at the first pixel outside a filled region
      {
        inSeg = false;
        lastValidPixel = oneContourOffset - 1; // store the last pixel position inside a filled region
        break;
      }
//.........这里部分代码省略.........