/usr/include/ITK-4.9/itkTriangleThresholdCalculator.h is in libinsighttoolkit4-dev 4.9.0-4ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* Copyright Insight Software Consortium
*
* 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
*
* http://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 itkTriangleThresholdCalculator_h
#define itkTriangleThresholdCalculator_h
#include "itkHistogramThresholdCalculator.h"
namespace itk
{
/** \class TriangleThresholdCalculator
* \brief Computes the Triangle's threshold for an image.
*
* This calculator computes the Triangle's threshold which separates an image
* into foreground and background components. The method relies on a
* histogram of image intensities. A line is drawn between the peak
* point in the hist and the furthest zero point (robustly estimated
* as the 1% or 99% point). The threshold is the position of maximum
* difference between the line and the original histogram.
*
* 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:
* http://hdl.handle.net/10380/3279 or
* http://www.insight-journal.org/browse/publication/811
*
* \ingroup Operators
* \ingroup ITKThresholding
*/
template <typename THistogram, typename TOutput=double>
class TriangleThresholdCalculator : public HistogramThresholdCalculator<THistogram, TOutput>
{
public:
/** Standard class typedefs. */
typedef TriangleThresholdCalculator Self;
typedef Object Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(TriangleThresholdCalculator, Object);
/** Type definition for the input image. */
typedef THistogram HistogramType;
typedef TOutput OutputType;
protected:
TriangleThresholdCalculator() {};
virtual ~TriangleThresholdCalculator() {};
void GenerateData(void) ITK_OVERRIDE;
private:
TriangleThresholdCalculator(const Self&) ITK_DELETE_FUNCTION;
void operator=(const Self&) ITK_DELETE_FUNCTION;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkTriangleThresholdCalculator.hxx"
#endif
#endif
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