#include <itkOtsuThresholdImageFilter.h>
#include <itkOtsuMultipleThresholdsCalculator.hxx>
#include <itkOtsuThresholdCalculator.hxx>
+#include <itkHistogramThresholdImageFilter.hxx>
+#include <itkImageToHistogramFilter.hxx>
+#include <itkMaskedImageToHistogramFilter.hxx>
+#include <itkBinaryThresholdImageFilter.hxx>
// -------------------------------------------------------------------------
cpPluginsImageFilters::OtsuThresholdImageFilter::