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itkLiThresholdCalculator.h
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itkLiThresholdCalculator.h
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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 itkLiThresholdCalculator_h
#define itkLiThresholdCalculator_h
#include "itkHistogramThresholdCalculator.h"
namespace itk
{
/**
* \class LiThresholdCalculator
* \brief Computes the Li threshold for an image. Aka intermeans
*
* Implements Li's Minimum Cross Entropy thresholding method
* This implementation is based on the iterative version (Ref. 2) of the algorithm.
* 1) Li C.H. and Lee C.K. (1993) "Minimum Cross Entropy Thresholding"
* Pattern Recognition, 26(4): 617-625
* 2) Li C.H. and Tam P.K.S. (1998) "An Iterative Algorithm for Minimum
* Cross Entropy Thresholding"Pattern Recognition Letters, 18(8): 771-776
* 3) Sezgin M. and Sankur B. (2004) "Survey over Image Thresholding
* Techniques and Quantitative Performance Evaluation" Journal of
* Electronic Imaging, 13(1): 146-165
* https://citeseer.ist.psu.edu/sezgin04survey.html
*
* This class is templated over the input histogram type.
* \warning This calculator assumes that the input histogram has only one dimension.
*
* \author Richard Beare. Department of Medicine, Monash University,
* Melbourne, Australia.
* \author Gaetan Lehmann. Biologie du Developpement et de la Reproduction, INRA de Jouy-en-Josas, France.
*
* This implementation was taken from the Insight Journal paper:
* https://www.insight-journal.org/browse/publication/811
*
* \ingroup Operators
* \ingroup ITKThresholding
*/
template <typename THistogram, typename TOutput = double>
class ITK_TEMPLATE_EXPORT LiThresholdCalculator : public HistogramThresholdCalculator<THistogram, TOutput>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(LiThresholdCalculator);
/** Standard class type aliases. */
using Self = LiThresholdCalculator;
using Superclass = HistogramThresholdCalculator<THistogram, TOutput>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(LiThresholdCalculator);
/** Type definition for the input image. */
using HistogramType = THistogram;
using OutputType = TOutput;
protected:
LiThresholdCalculator() = default;
~LiThresholdCalculator() override = default;
void
GenerateData() override;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkLiThresholdCalculator.hxx"
#endif
#endif