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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 itkPolylineMask2DImageFilter_h
#define itkPolylineMask2DImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkImageRegionIteratorWithIndex.h"
namespace itk
{
/**
* \class PolylineMask2DImageFilter
* \brief Implements 2D image masking operation constrained by a contour.
*
* This class is parameterized over input image type, contour defined by a polyline,
* and output image type. If the input image is three dimensional, the masking operation is
* performed on each slice (2D image). The output image will have two regions demarcated
* by the contour i.e inside(masked) and outside region. The pixels in the
* masked region will keep their original intensity values. Whereas, intensity
* value of pixels outside the masked region will be set to zero.
*
* \warning The Polygon represented by the input Polyline must be a convex polygon.
* \warning The Polygon's inside is defined by the standard clock-wise
* convention. That is, when walking along the polygon, the inside of the
* polygon is at the right-hand side. Note also that this must be interpreted
* in the natural coordinate system used by ITK, not the one used in computer
* graphics.
*
* \ingroup ImageToImageFilter
* \sa PolylineMaskImageFilter
* \ingroup ITKImageIntensity
*/
template <typename TInputImage, typename TPolyline, typename TOutputImage>
class ITK_TEMPLATE_EXPORT PolylineMask2DImageFilter : public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(PolylineMask2DImageFilter);
/** Standard class type aliases. */
using Self = PolylineMask2DImageFilter;
using Superclass = ImageToImageFilter<TInputImage, TOutputImage>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(PolylineMask2DImageFilter);
/** Number of dimensions. */
static constexpr unsigned int NDimensions = TInputImage::ImageDimension;
static constexpr unsigned int NOutputDimensions = TOutputImage::ImageDimension;
/** Some convenient type alias for input image */
using InputImageType = TInputImage;
using InputImageConstPointer = typename InputImageType::ConstPointer;
using InputImagePointer = typename InputImageType::Pointer;
using InputImageRegionType = typename InputImageType::RegionType;
using InputImagePixelType = typename InputImageType::PixelType;
/* type alias for the polyline type */
using PolylineType = TPolyline;
/* type alias for the output image */
using OutputImageType = TOutputImage;
using OutputImagePointer = typename OutputImageType::Pointer;
using OutputImageRegionType = typename OutputImageType::RegionType;
using OutputImagePixelType = typename OutputImageType::PixelType;
/** Read in image and polyline inputs */
void
SetInput1(const InputImageType * input);
void
SetInput2(const PolylineType * input);
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro(SameDimensionCheck, (Concept::SameDimension<NDimensions, NOutputDimensions>));
itkConceptMacro(IntConvertibleOutputCheck, (Concept::Convertible<int, OutputImagePixelType>));
itkConceptMacro(OutputEqualityComparableCheck, (Concept::EqualityComparable<OutputImagePixelType>));
itkConceptMacro(InputConvertibleToOutputCheck, (Concept::Convertible<InputImagePixelType, OutputImagePixelType>));
// End concept checking
#endif
protected:
PolylineMask2DImageFilter();
~PolylineMask2DImageFilter() override = default;
void
GenerateData() override;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkPolylineMask2DImageFilter.hxx"
#endif
#endif
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