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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 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:
/** Standard class typedefs. */
typedef PolylineMask2DImageFilter Self;
typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(PolylineMask2DImageFilter, ImageToImageFilter);
/** Number of dimensions. */
itkStaticConstMacro(NDimensions, unsigned int,
TInputImage::ImageDimension);
itkStaticConstMacro(NOutputDimensions, unsigned int,
TOutputImage::ImageDimension);
/** Some convenient typedefs for input image */
typedef TInputImage InputImageType;
typedef typename InputImageType::ConstPointer InputImageConstPointer;
typedef typename InputImageType::Pointer InputImagePointer;
typedef typename InputImageType::RegionType InputImageRegionType;
typedef typename InputImageType::PixelType InputImagePixelType;
/* typedef for the polyline type */
typedef TPolyline PolylineType;
/* typedef for the output image */
typedef TOutputImage OutputImageType;
typedef typename OutputImageType::Pointer OutputImagePointer;
typedef typename OutputImageType::RegionType OutputImageRegionType;
typedef typename OutputImageType::PixelType OutputImagePixelType;
/** Read in image and polyline inputs */
void SetInput1(const InputImageType *image);
void SetInput2(const PolylineType *polyline);
#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();
virtual ~PolylineMask2DImageFilter() ITK_OVERRIDE {}
virtual void GenerateData() ITK_OVERRIDE;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(PolylineMask2DImageFilter);
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkPolylineMask2DImageFilter.hxx"
#endif
#endif
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