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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 itkExtractOrthogonalSwath2DImageFilter_h
#define itkExtractOrthogonalSwath2DImageFilter_h
#include "itkImageAndPathToImageFilter.h"
#include "itkParametricPath.h"
namespace itk
{
/** \class ExtractOrthogonalSwath2DImageFilter
* \brief Extracts into rectangular form a "swath" image from the input image along the parametric path.
*
* Extracts a rectangular "swath" image from the 2D input image by interpolating
* image pixels orthogonal to the parametric path while walking along the
* path. The top half of the swath image corresponds to pixels to the left of
* the path when walking along the path, and the bottom half of the swath image
* likewise corresponds to pixels to the right of the path when walking along
* the path. The center row of the swath image corresponds to pixels laying
* directly on the path. The input and output images must be of the same type.
*
* \ingroup ImageFilters
* \ingroup PathFilters
* \ingroup ITKPath
*/
template< typename TImage >
class ExtractOrthogonalSwath2DImageFilter:public
ImageAndPathToImageFilter< TImage, ParametricPath< 2 >, TImage >
{
public:
/** Standard class typedefs. */
typedef ExtractOrthogonalSwath2DImageFilter Self;
typedef ImageAndPathToImageFilter< TImage, ParametricPath< 2 >, TImage >
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(ExtractOrthogonalSwath2DImageFilter, ImageAndPathToImageFilter);
/** Some convenient typedefs. */
typedef TImage ImageType;
typedef typename ImageType::Pointer ImagePointer;
typedef typename ImageType::ConstPointer ImageConstPointer;
typedef typename ImageType::RegionType ImageRegionType;
typedef typename ImageType::IndexType ImageIndexType;
typedef typename ImageType::PixelType ImagePixelType;
typedef ParametricPath< 2 > PathType;
typedef typename PathType::ConstPointer PathConstPointer;
typedef typename PathType::InputType PathInputType;
typedef typename PathType::OutputType PathOutputType;
typedef typename PathType::IndexType PathIndexType;
typedef typename PathType::ContinuousIndexType PathContinuousIndexType;
typedef typename PathType::OffsetType PathOffsetType;
typedef typename PathType::VectorType PathVectorType;
typedef typename ImageType::SizeType SizeType;
/** ImageDimension constants */
itkStaticConstMacro(PathDimension, unsigned int,
2);
itkStaticConstMacro(ImageDimension, unsigned int,
TImage::ImageDimension);
/** Spacing (size of a pixel) of the output image. The
* spacing is normally the geometric distance between image samples,
* but in the case of a swath image it is meaningless since the size
* of each pixel varies depending on the curvature of the input path.
* It is stored internally as double, but may be set from
* float. \sa GetSpacing() */
virtual void SetSpacing(const double *spacing);
virtual void SetSpacing(const float *spacing);
virtual const double * GetSpacing() const;
/** The origin of the output image. The origin is the geometric
* coordinates of the index (0,0,...,0). It is stored internally
* as double but may be set from float.
* \sa GetOrigin() */
virtual void SetOrigin(const double *origin);
virtual void SetOrigin(const float *origin);
virtual const double * GetOrigin() const;
/** Set the size of the swath image.
* The number of rows (size[1]) MUST be odd */
itkSetMacro(Size, SizeType)
/** Set the default pixel value of the swath image, to be used if the swath
* extends past the edge of the input image data. */
itkSetMacro(DefaultPixelValue, ImagePixelType)
//--------------------------------------------------------------------------
//
/** Request the largest possible region on all outputs. */
virtual void EnlargeOutputRequestedRegion(DataObject *output) ITK_OVERRIDE
{
output->SetRequestedRegionToLargestPossibleRegion();
}
//
//--------------------------------------------------------------------------
protected:
ExtractOrthogonalSwath2DImageFilter()
{
m_DefaultPixelValue = NumericTraits< ImagePixelType >::ZeroValue();
m_Size[0] = 512;
m_Size[1] = 16 * 2 + 1; // must be odd
m_Origin[0] = m_Origin[1] = 0.0;
m_Spacing[0] = m_Spacing[1] = 1.0;
}
virtual ~ExtractOrthogonalSwath2DImageFilter() {}
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
//--------------------------------------------------------------------------
//
/** GenerateOutputInformation does not rely on input information */
virtual void GenerateOutputInformation(void) ITK_OVERRIDE;
/** Request the largest possible region on all inputs. */
virtual void GenerateInputRequestedRegion() ITK_OVERRIDE
{
Superclass::GenerateInputRequestedRegion();
this->GetNonConstImageInput()->SetRequestedRegionToLargestPossibleRegion();
this->GetNonConstPathInput()->SetRequestedRegionToLargestPossibleRegion();
}
virtual void GenerateData(void) ITK_OVERRIDE;
//
//--------------------------------------------------------------------------
private:
ExtractOrthogonalSwath2DImageFilter(const Self &) ITK_DELETE_FUNCTION;
void operator=(const Self &) ITK_DELETE_FUNCTION;
ImagePixelType m_DefaultPixelValue;
SizeType m_Size;
double m_Origin[ImageDimension];
double m_Spacing[ImageDimension];
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkExtractOrthogonalSwath2DImageFilter.hxx"
#endif
#endif
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