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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 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 ITK_TEMPLATE_EXPORT ExtractOrthogonalSwath2DImageFilter
: public ImageAndPathToImageFilter<TImage, ParametricPath<2>, TImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(ExtractOrthogonalSwath2DImageFilter);
/** Standard class type aliases. */
using Self = ExtractOrthogonalSwath2DImageFilter;
using Superclass = ImageAndPathToImageFilter<TImage, ParametricPath<2>, TImage>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(ExtractOrthogonalSwath2DImageFilter);
/** Some convenient type alias. */
using ImageType = TImage;
using ImagePointer = typename ImageType::Pointer;
using ImageConstPointer = typename ImageType::ConstPointer;
using ImageRegionType = typename ImageType::RegionType;
using ImageIndexType = typename ImageType::IndexType;
using ImagePixelType = typename ImageType::PixelType;
using PathType = ParametricPath<2>;
using PathConstPointer = typename PathType::ConstPointer;
using PathInputType = typename PathType::InputType;
using PathOutputType = typename PathType::OutputType;
using PathIndexType = typename PathType::IndexType;
using PathContinuousIndexType = typename PathType::ContinuousIndexType;
using PathOffsetType = typename PathType::OffsetType;
using PathVectorType = typename PathType::VectorType;
using SizeType = typename ImageType::SizeType;
/** ImageDimension constants */
static constexpr unsigned int PathDimension = 2;
static constexpr unsigned int ImageDimension = 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. */
void
EnlargeOutputRequestedRegion(DataObject * output) override
{
output->SetRequestedRegionToLargestPossibleRegion();
}
//
//--------------------------------------------------------------------------
protected:
ExtractOrthogonalSwath2DImageFilter()
{
m_DefaultPixelValue = ImagePixelType{};
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;
}
~ExtractOrthogonalSwath2DImageFilter() override = default;
void
PrintSelf(std::ostream & os, Indent indent) const override;
//--------------------------------------------------------------------------
//
/** GenerateOutputInformation does not rely on input information */
void
GenerateOutputInformation() override;
/** Request the largest possible region on all inputs. */
void
GenerateInputRequestedRegion() override
{
Superclass::GenerateInputRequestedRegion();
this->GetNonConstImageInput()->SetRequestedRegionToLargestPossibleRegion();
this->GetNonConstPathInput()->SetRequestedRegionToLargestPossibleRegion();
}
void
GenerateData() override;
//
//--------------------------------------------------------------------------
private:
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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