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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 itkTobogganImageFilter_h
#define itkTobogganImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkConstNeighborhoodIterator.h"
namespace itk
{
/** \class TobogganImageFilter
* \brief toboggan image segmentation
* The Toboggan segmentation takes a gradient magnitude image
* as input and produces an (over-)segmentation of the image based
* on connecting each pixel to a local minimum of gradient. It is
* roughly equivalent to a watershed segmentation of the lowest level.
*
* The output is a 4 connected labeled map of the image.
* \ingroup Segmentation
* \ingroup ITKWatersheds
*/
template< typename TInputImage, typename TOutputImage = Image< IdentifierType, TInputImage::ImageDimension > >
class ITK_TEMPLATE_EXPORT TobogganImageFilter:
public ImageToImageFilter<
TInputImage,
TOutputImage>
{
public:
/** Standard "Self" typedef. */
typedef TobogganImageFilter Self;
/** The type of input image. */
typedef TInputImage InputImageType;
/** Number of dimensions. */
itkStaticConstMacro(NDimensions, unsigned int, TInputImage::ImageDimension);
/** The type of output image. */
typedef TOutputImage OutputImageType;
/** Output image pixel type. */
typedef typename OutputImageType::PixelType OutputImagePixelType;
/** Input image pixel type. */
typedef typename InputImageType::PixelType InputImagePixelType;
/** Dimension of the input and output images. */
enum { ImageDimension = InputImageType::ImageDimension };
/** Other convenient typedefs */
typedef typename InputImageType::RegionType RegionType;
typedef typename InputImageType::SizeType SizeType;
typedef typename InputImageType::IndexType IndexType;
typedef typename InputImageType::Pointer InputImagePointer;
typedef typename InputImageType::ConstPointer InputImageConstPointer;
typedef typename OutputImageType::Pointer OutputImagePointer;
/** Standard super class typedef support. */
typedef ImageToImageFilter< InputImageType, OutputImageType > Superclass;
/** Typedef support for the input image scalar value type. */
typedef typename InputImageType::PixelType ScalarType;
/** Smart pointer typedef support */
typedef SmartPointer< Self > Pointer;
/** Run-time type information (and related methods) */
itkTypeMacro(TobogganImageFilter, ImageToImageFilter);
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Standard process object method. This filter is not multithreaded. */
void GenerateData() ITK_OVERRIDE;
void GenerateInputRequestedRegion() ITK_OVERRIDE;
void EnlargeOutputRequestedRegion(DataObject *) ITK_OVERRIDE;
/** Neighborhood iterator type */
typedef ConstNeighborhoodIterator< TInputImage >
NeighborhoodIteratorType;
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro( LessThanComparableCheck,
( Concept::LessThanComparable< InputImagePixelType > ) );
itkConceptMacro( OStreamWritableCheck,
( Concept::OStreamWritable< InputImagePixelType > ) );
// End concept checking
#endif
protected:
TobogganImageFilter();
~TobogganImageFilter() ITK_OVERRIDE {}
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(TobogganImageFilter);
}; // end of class
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkTobogganImageFilter.hxx"
#endif
#endif
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