Method UpdateImageInformationFromImageIO

Code/IO/src/sitkImageFileReader.cxx:135–185

void
ImageFileReader ::UpdateImageInformationFromImageIO(const itk::ImageIOBase * iobase)
{
  PixelIDValueType pixelType;
  this->GetPixelIDFromImageIO(iobase, pixelType, m_Dimension);

  std::vector<double> direction(m_Dimension * m_Dimension);

  std::vector<double>   origin(m_Dimension);
  std::vector<double>   spacing(m_Dimension);
  std::vector<uint64_t> size(m_Dimension);
  for (unsigned int i = 0; i < m_Dimension; ++i)
  {
    origin[i] = iobase->GetOrigin(i);
    spacing[i] = iobase->GetSpacing(i);
    size[i] = iobase->GetDimensions(i);
    for (unsigned int col = 0; col < m_Dimension; ++col)
    {
      direction[i * m_Dimension + col] = iobase->GetDirection(col)[i];
    }
  }

  // release functions bound to old meta data dictionary
  if (m_MetaDataDictionary.get())
  {
    this->m_pfGetMetaDataKeys = nullptr;
    this->m_pfHasMetaDataKey = nullptr;
    this->m_pfGetMetaData = nullptr;
  }

  this->m_MetaDataDictionary = std::make_unique<MetaDataDictionary>(iobase->GetMetaDataDictionary());

  m_PixelType = static_cast<PixelIDValueEnum>(pixelType);

  // Use the number of components as reported by the itk::Image
  m_NumberOfComponents = iobase->GetNumberOfComponents();

  using std::swap;
  swap(direction, m_Direction);
  swap(origin, m_Origin);
  swap(spacing, m_Spacing);
  swap(size, m_Size);

  this->m_pfGetMetaDataKeys = [capture0 = this->m_MetaDataDictionary.get()] { return capture0->GetKeys(); };
  this->m_pfHasMetaDataKey = [capture0 = this->m_MetaDataDictionary.get()](auto && PH1) {
    return capture0->HasKey(std::forward<decltype(PH1)>(PH1));
  };
  this->m_pfGetMetaData = [capture0 = this->m_MetaDataDictionary.get()](auto && PH1) {
    return GetMetaDataDictionaryCustomCast::CustomCast(capture0, std::forward<decltype(PH1)>(PH1));
  };
}

PixelIDValueEnum
ImageFileReader ::GetPixelID() const