#include <itkHistogramThresholdImageFilter.h>
#include <itkHistogramThresholdImageFilter.hxx>
#include <itkBinaryFunctorImageFilter.hxx>
+#include <itkImageToHistogramFilter.hxx>
+#include <itkMaskedImageToHistogramFilter.hxx>
+#include <itkBinaryThresholdImageFilter.hxx>
// -------------------------------------------------------------------------
cpPluginsImageFilters::HistogramThresholdImageFilter::