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/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkScalarImageToHistogramGenerator_h
#define itkScalarImageToHistogramGenerator_h
#include "itkImageToListSampleAdaptor.h"
#include "itkSampleToHistogramFilter.h"
#include "itkHistogram.h"
#include "itkObject.h"
namespace itk
{
namespace Statistics
{
/**
* \class ScalarImageToHistogramGenerator
*
* \brief TODO
* \ingroup ITKStatistics
*/
template <typename TImageType>
class ITK_TEMPLATE_EXPORT ScalarImageToHistogramGenerator : public Object
{
public:
ITK_DISALLOW_COPY_AND_MOVE(ScalarImageToHistogramGenerator);
/** Standard type alias */
using Self = ScalarImageToHistogramGenerator;
using Superclass = Object;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(ScalarImageToHistogramGenerator);
/** standard New() method support */
itkNewMacro(Self);
using ImageType = TImageType;
using AdaptorType = itk::Statistics::ImageToListSampleAdaptor<ImageType>;
using AdaptorPointer = typename AdaptorType::Pointer;
using PixelType = typename ImageType::PixelType;
using RealPixelType = typename NumericTraits<PixelType>::RealType;
using HistogramType = itk::Statistics::Histogram<double>;
using GeneratorType = itk::Statistics::SampleToHistogramFilter<AdaptorType, HistogramType>;
using GeneratorPointer = typename GeneratorType::Pointer;
using HistogramPointer = typename HistogramType::Pointer;
using HistogramConstPointer = typename HistogramType::ConstPointer;
public:
/** Triggers the Computation of the histogram */
void
Compute();
/** Connects the input image for which the histogram is going to be computed
*/
void
SetInput(const ImageType *);
/** Return the histogram. o
\warning This output is only valid after the Compute() method has been invoked
\sa Compute */
const HistogramType *
GetOutput() const;
/** Set number of histogram bins */
void
SetNumberOfBins(unsigned int numberOfBins);
/** Set marginal scale value to be passed to the histogram generator */
void
SetMarginalScale(double marginalScale);
/** Set the minimum value from which the bins will be computed.
\warning This requires to set the automatic computation of the histogram minimum/maximum to Off.
\sa SetAutoHistogramMinimumMaximum */
void
SetHistogramMin(RealPixelType minimumValue);
/** Set the maximum value from which the bins will be computed.
\warning This requires to set the automatic computation of the histogram minimum/maximum to Off.
\sa SetAutoHistogramMinimumMaximum */
void
SetHistogramMax(RealPixelType maximumValue);
/** Computes the histogram minimum and maximum bin values automatically.
\warning If set to Off, the values must be manually specified with SetHistogramMin() and SetHistogramMax().
\sa SetHistogramMin SetHistogramMax */
void
SetAutoHistogramMinimumMaximum(bool autoOnOff);
protected:
ScalarImageToHistogramGenerator();
~ScalarImageToHistogramGenerator() override = default;
void
PrintSelf(std::ostream & os, Indent indent) const override;
private:
AdaptorPointer m_ImageToListSampleAdaptor{};
GeneratorPointer m_HistogramGenerator{};
};
} // end of namespace Statistics
} // end of namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkScalarImageToHistogramGenerator.hxx"
#endif
#endif
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