message: BUG: number of buffered projections wrongly hard-coded
diff: @@ -443,7 +443,7 @@ MechlemOneStepSpectralReconstructionFilter<TOutputImage, TPhotonCounts, TSpectru
  // Set the extract filter's region
  typename TPhotonCounts::RegionType extractionRegion = this->GetInputPhotonCounts()->GetLargestPossibleRegion();
  extractionRegion.SetSize(TPhotonCounts::ImageDimension - 1,
  - std::min(16, m_NumberOfProjectionsInSubset[subset] - i));
  + std::min(NProjPerExtract , m_NumberOfProjectionsInSubset[subset] - i));
  extractionRegion.SetIndex(TPhotonCounts::ImageDimension - 1, subset * m_NumberOfProjectionsPerSubset + i);
  m_ExtractPhotonCountsFilter->SetExtractionRegion(extractionRegion);
  m_ExtractPhotonCountsFilter->UpdateOutputInformation();
  