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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 itkLabelMapToBinaryImageFilter_h
#define itkLabelMapToBinaryImageFilter_h
#include "itkLabelMapFilter.h"
namespace itk
{
/**
* \class LabelMapToBinaryImageFilter
* \brief Convert a LabelMap to a binary image.
*
* LabelMapToBinaryImageFilter to a binary image. All the objects in the image
* are used as foreground. The background values of the original binary image
* can be restored by passing this image to the filter with the
* SetBackgroundImage() method.
*
* This implementation was taken from the Insight Journal paper:
* https://www.insight-journal.org/browse/publication/176
*
* \author Gaetan Lehmann. Biologie du Developpement et de la Reproduction,
* INRA de Jouy-en-Josas, France.
*
* \sa LabelMapToLabelImageFilter, LabelMapMaskImageFilter
* \ingroup ImageEnhancement MathematicalMorphologyImageFilters
* \ingroup ITKLabelMap
*/
template <typename TInputImage, typename TOutputImage>
class ITK_TEMPLATE_EXPORT LabelMapToBinaryImageFilter : public LabelMapFilter<TInputImage, TOutputImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(LabelMapToBinaryImageFilter);
/** Standard class type aliases. */
using Self = LabelMapToBinaryImageFilter;
using Superclass = LabelMapFilter<TInputImage, TOutputImage>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Some convenient type alias. */
using InputImageType = TInputImage;
using OutputImageType = TOutputImage;
using InputImagePointer = typename InputImageType::Pointer;
using InputImageConstPointer = typename InputImageType::ConstPointer;
using InputImageRegionType = typename InputImageType::RegionType;
using InputImagePixelType = typename InputImageType::PixelType;
using LabelObjectType = typename InputImageType::LabelObjectType;
using OutputImagePointer = typename OutputImageType::Pointer;
using OutputImageConstPointer = typename OutputImageType::ConstPointer;
using OutputImageRegionType = typename OutputImageType::RegionType;
using OutputImagePixelType = typename OutputImageType::PixelType;
using IndexType = typename OutputImageType::IndexType;
/** ImageDimension constants */
static constexpr unsigned int InputImageDimension = TInputImage::ImageDimension;
static constexpr unsigned int OutputImageDimension = TOutputImage::ImageDimension;
/** Standard New method. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(LabelMapToBinaryImageFilter);
/**
* Set/Get the value used as "background" in the output image.
* Defaults to NumericTraits<PixelType>::NonpositiveMin().
*/
itkSetMacro(BackgroundValue, OutputImagePixelType);
itkGetConstMacro(BackgroundValue, OutputImagePixelType);
/**
* Set/Get the value used as "foreground" in the output image.
* Defaults to NumericTraits<PixelType>::max().
*/
itkSetMacro(ForegroundValue, OutputImagePixelType);
itkGetConstMacro(ForegroundValue, OutputImagePixelType);
/** Set/Get the background image top be used to restore the background values
*/
void
SetBackgroundImage(const OutputImageType * input)
{
// Process object is not const-correct so the const casting is required.
this->SetNthInput(1, const_cast<OutputImageType *>(input));
}
OutputImageType *
GetBackgroundImage()
{
return static_cast<OutputImageType *>(const_cast<DataObject *>(this->ProcessObject::GetInput(1)));
}
/** Set the input image */
void
SetInput1(const InputImageType * input)
{
this->SetInput(input);
}
/** Set the marker image */
void
SetInput2(const OutputImageType * input)
{
this->SetBackgroundImage(input);
}
protected:
LabelMapToBinaryImageFilter();
~LabelMapToBinaryImageFilter() override = default;
/** LabelMapToBinaryImageFilter needs the entire input be
* available. Thus, it needs to provide an implementation of
* GenerateInputRequestedRegion(). */
void
GenerateInputRequestedRegion() override;
/** LabelMapToBinaryImageFilter will produce the entire output. */
void
EnlargeOutputRequestedRegion(DataObject * itkNotUsed(output)) override;
void
GenerateData() override;
void
DynamicThreadedGenerateData(const OutputImageRegionType & outputRegionForThread) override;
// part of a compile error workaround for GCC 4.8.5-28 (Red Hat) from 20150623
void
SuperclassDynamicTGD(const OutputImageRegionType & outputRegion)
{
Superclass::DynamicThreadedGenerateData(outputRegion);
}
void
ThreadedProcessLabelObject(LabelObjectType * labelObject) override;
void
PrintSelf(std::ostream & os, Indent indent) const override;
private:
OutputImagePixelType m_BackgroundValue{};
OutputImagePixelType m_ForegroundValue{};
}; // end of class
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkLabelMapToBinaryImageFilter.hxx"
#endif
#endif
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