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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 itkBinaryContourImageFilter_h
#define itkBinaryContourImageFilter_h
#include "itkInPlaceImageFilter.h"
#include "itkScanlineFilterCommon.h"
#include <vector>
namespace itk
{
/**
* \class BinaryContourImageFilter
* \brief Labels the pixels on the border of the objects in a binary image.
*
* BinaryContourImageFilter takes a binary image as input, where the pixels
* in the objects are the pixels with a value equal to ForegroundValue.
* Only the pixels on the contours of the objects are kept. The pixels not
* on the border are changed to BackgroundValue.
*
* The connectivity can be changed to minimum or maximum connectivity with
* SetFullyConnected(). Full connectivity produces thicker contours.
*
* https://www.insight-journal.org/browse/publication/217
*
* \author Gaetan Lehmann. Biologie du Developpement et de la Reproduction, INRA de Jouy-en-Josas, France.
*
* \sa LabelContourImageFilter BinaryErodeImageFilter SimpleContourExtractorImageFilter
* \ingroup ITKImageLabel
*
* \sphinx
* \sphinxexample{Filtering/ImageLabel/ExtractBoundariesOfConnectedRegionsInBinaryImage,Extract Boundaries Of Connected
* Regions In Binary Image} \sphinxexample{Filtering/ImageLabel/ExtractBoundariesOfBlobsInBinaryImage,Extract Inner And
* Outer Boundaries Of Blobs In Binary Image} \endsphinx
*/
template <typename TInputImage, typename TOutputImage>
class ITK_TEMPLATE_EXPORT BinaryContourImageFilter
: public InPlaceImageFilter<TInputImage, TOutputImage>
, protected ScanlineFilterCommon<TInputImage, TOutputImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(BinaryContourImageFilter);
/**
* Standard "Self" & Superclass typedef.
*/
using Self = BinaryContourImageFilter;
using Superclass = InPlaceImageFilter<TInputImage, TOutputImage>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
using Superclass::Register;
using Superclass::UnRegister;
/**
* Run-time type information (and related methods)
*/
itkOverrideGetNameOfClassMacro(BinaryContourImageFilter);
/**
* Method for creation through the object factory.
*/
itkNewMacro(Self);
/**
* Image type alias support
*/
using InputImageType = TInputImage;
using InputImagePointer = typename InputImageType::Pointer;
using InputImageConstPointer = typename InputImageType::ConstPointer;
using IndexType = typename InputImageType::IndexType;
using SizeType = typename InputImageType::SizeType;
using OffsetType = typename InputImageType::OffsetType;
using InputImagePixelType = typename InputImageType::PixelType;
using InputInternalPixelType = typename InputImageType::InternalPixelType;
using OutputImageType = TOutputImage;
using OutputImagePointer = typename OutputImageType::Pointer;
using RegionType = typename OutputImageType::RegionType;
using OutputIndexType = typename OutputImageType::IndexType;
using OutputSizeType = typename OutputImageType::SizeType;
using OutputOffsetType = typename OutputImageType::OffsetType;
using OutputImagePixelType = typename OutputImageType::PixelType;
using OutputInternalPixelType = typename OutputImageType::InternalPixelType;
static constexpr unsigned int ImageDimension = OutputImageType::ImageDimension;
/**
* Set/Get whether the connected components are defined strictly by
* face connectivity or by face+edge+vertex connectivity. Default is
* FullyConnectedOff. For objects that are 1 pixel wide, use
* FullyConnectedOn.
*/
itkSetMacro(FullyConnected, bool);
itkGetConstReferenceMacro(FullyConnected, bool);
itkBooleanMacro(FullyConnected);
/**
* Set/Get the background value used to mark the pixels not on the border of the
* objects.
*/
itkSetMacro(BackgroundValue, OutputImagePixelType);
itkGetConstMacro(BackgroundValue, OutputImagePixelType);
/**
* Set/Get the foreground value used to identify the objects in the input and
* output images.
*/
itkSetMacro(ForegroundValue, InputImagePixelType);
itkGetConstMacro(ForegroundValue, InputImagePixelType);
protected:
BinaryContourImageFilter();
~BinaryContourImageFilter() override = default;
void
PrintSelf(std::ostream & os, Indent indent) const override;
void
GenerateData() override;
void
BeforeThreadedGenerateData() override;
void
AfterThreadedGenerateData() override;
void
DynamicThreadedGenerateData(const RegionType & outputRegionForThread) override;
void
ThreadedIntegrateData(const RegionType & outputRegionForThread);
/** BinaryContourImageFilter needs the entire input. Therefore
* it must provide an implementation GenerateInputRequestedRegion().
* \sa ProcessObject::GenerateInputRequestedRegion(). */
void
GenerateInputRequestedRegion() override;
/** BinaryContourImageFilter will produce all of the output.
* Therefore it must provide an implementation of
* EnlargeOutputRequestedRegion().
* \sa ProcessObject::EnlargeOutputRequestedRegion() */
void
EnlargeOutputRequestedRegion(DataObject * itkNotUsed(output)) override;
using ScanlineFunctions = ScanlineFilterCommon<TInputImage, TOutputImage>;
using InternalLabelType = typename ScanlineFunctions::InternalLabelType;
using OutSizeType = typename ScanlineFunctions::OutSizeType;
using RunLength = typename ScanlineFunctions::RunLength;
using LineEncodingType = typename ScanlineFunctions::LineEncodingType;
using LineEncodingIterator = typename ScanlineFunctions::LineEncodingIterator;
using LineEncodingConstIterator = typename ScanlineFunctions::LineEncodingConstIterator;
using OffsetVectorType = typename ScanlineFunctions::OffsetVectorType;
using OffsetVectorConstIterator = typename ScanlineFunctions::OffsetVectorConstIterator;
using LineMapType = typename ScanlineFunctions::LineMapType;
using UnionFindType = typename ScanlineFunctions::UnionFindType;
using ConsecutiveVectorType = typename ScanlineFunctions::ConsecutiveVectorType;
private:
LineMapType m_ForegroundLineMap{};
LineMapType m_BackgroundLineMap{};
InputImagePixelType m_ForegroundValue{};
OutputImagePixelType m_BackgroundValue{};
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkBinaryContourImageFilter.hxx"
#endif
#endif
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