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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 itkOtsuThresholdImageFilter_h
#define itkOtsuThresholdImageFilter_h
#include "itkHistogramThresholdImageFilter.h"
#include "itkOtsuThresholdCalculator.h"
namespace itk
{
/** \class OtsuThresholdImageFilter
* \brief Threshold an image using the Otsu Threshold
*
* This filter creates a binary thresholded image that separates an
* image into foreground and background components. The filter
* computes the threshold using the OtsuThresholdCalculator and
* applies that threshold to the input image using the
* BinaryThresholdImageFilter.
*
* \author Richard Beare
* \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://hdl.handle.net/10380/3279 or
* http://www.insight-journal.org/browse/publication/811
*
* \wiki
* \wikiexample{Segmentation/OtsuThresholdImageFilter,Separate foreground and background using Otsu's method}
* \endwiki
*
* \sa HistogramThresholdImageFilter
*
* \ingroup Multithreaded
* \ingroup ITKThresholding
*/
template<typename TInputImage, typename TOutputImage, typename TMaskImage=TOutputImage>
class OtsuThresholdImageFilter :
public HistogramThresholdImageFilter<TInputImage, TOutputImage, TMaskImage>
{
public:
/** Standard Self typedef */
typedef OtsuThresholdImageFilter Self;
typedef HistogramThresholdImageFilter<TInputImage,TOutputImage,
TMaskImage> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Runtime information support. */
itkTypeMacro(OtsuThresholdImageFilter, HistogramThresholdImageFilter);
typedef TInputImage InputImageType;
typedef TOutputImage OutputImageType;
typedef TMaskImage MaskImageType;
/** Image pixel value typedef. */
typedef typename InputImageType::PixelType InputPixelType;
typedef typename OutputImageType::PixelType OutputPixelType;
typedef typename MaskImageType::PixelType MaskPixelType;
/** Image related typedefs. */
typedef typename InputImageType::Pointer InputImagePointer;
typedef typename OutputImageType::Pointer OutputImagePointer;
typedef typename InputImageType::SizeType InputSizeType;
typedef typename InputImageType::IndexType InputIndexType;
typedef typename InputImageType::RegionType InputImageRegionType;
typedef typename OutputImageType::SizeType OutputSizeType;
typedef typename OutputImageType::IndexType OutputIndexType;
typedef typename OutputImageType::RegionType OutputImageRegionType;
typedef typename MaskImageType::SizeType MaskSizeType;
typedef typename MaskImageType::IndexType MaskIndexType;
typedef typename MaskImageType::RegionType MaskImageRegionType;
typedef typename Superclass::HistogramType HistogramType;
typedef OtsuThresholdCalculator< HistogramType, InputPixelType > CalculatorType;
/** Image related typedefs. */
itkStaticConstMacro(InputImageDimension, unsigned int,
InputImageType::ImageDimension );
itkStaticConstMacro(OutputImageDimension, unsigned int,
OutputImageType::ImageDimension );
protected:
OtsuThresholdImageFilter()
{
this->SetCalculator( CalculatorType::New() );
}
~OtsuThresholdImageFilter() ITK_OVERRIDE {};
private:
ITK_DISALLOW_COPY_AND_ASSIGN(OtsuThresholdImageFilter);
};
} // end namespace itk
#endif
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