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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 itkShiSparseLevelSetImage_h
#define itkShiSparseLevelSetImage_h
#include "itkLevelSetSparseImage.h"
namespace itk
{
/**
* \class ShiSparseLevelSetImage
* \brief Derived class for the shi representation of level-set function
*
* This representation is a "sparse" level-set function, where values could
* only be { -3, -1, +1, +3 } and organized into 2 layers { -1, +1 }.
*
* \tparam VDimension Dimension of the input space
* \ingroup ITKLevelSetsv4
*/
template <unsigned int VDimension>
class ITK_TEMPLATE_EXPORT ShiSparseLevelSetImage : public LevelSetSparseImage<int8_t, VDimension>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(ShiSparseLevelSetImage);
using Self = ShiSparseLevelSetImage;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
using Superclass = LevelSetSparseImage<int8_t, VDimension>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(ShiSparseLevelSetImage);
static constexpr unsigned int Dimension = VDimension;
using typename Superclass::InputType;
using typename Superclass::OutputType;
using typename Superclass::OutputRealType;
using typename Superclass::GradientType;
using typename Superclass::HessianType;
using typename Superclass::LevelSetDataType;
using typename Superclass::LayerIdType;
using typename Superclass::LabelObjectType;
using typename Superclass::LabelObjectPointer;
using typename Superclass::LabelObjectLengthType;
using typename Superclass::LabelObjectLineType;
using typename Superclass::LabelMapType;
using typename Superclass::LabelMapPointer;
using typename Superclass::RegionType;
using typename Superclass::LayerType;
using typename Superclass::LayerIterator;
using typename Superclass::LayerConstIterator;
using typename Superclass::LayerMapType;
using typename Superclass::LayerMapIterator;
using typename Superclass::LayerMapConstIterator;
/** Returns the value of the level set function at a given location inputIndex */
using Superclass::Evaluate;
OutputType
Evaluate(const InputType & inputIndex) const override;
/** Returns the Hessian of the level set function at a given location inputIndex */
HessianType
EvaluateHessian(const InputType & inputIndex) const override;
/** Returns the Laplacian of the level set function at a given location inputIndex */
OutputRealType
EvaluateLaplacian(const InputType & inputIndex) const override;
/** Returns the Laplacian of the level set function at a given location inputIndex */
OutputRealType
EvaluateMeanCurvature(const InputType & inputIndex) const override;
void
EvaluateHessian(const InputType & inputIndex, LevelSetDataType & data) const override;
void
EvaluateLaplacian(const InputType & inputIndex, LevelSetDataType & data) const override;
void
EvaluateMeanCurvature(const InputType & inputIndex, LevelSetDataType & data) const override;
static inline LayerIdType
MinusThreeLayer()
{
return -3;
}
static inline LayerIdType
MinusOneLayer()
{
return -1;
}
static inline LayerIdType
PlusOneLayer()
{
return 1;
}
static inline LayerIdType
PlusThreeLayer()
{
return 3;
}
protected:
ShiSparseLevelSetImage();
~ShiSparseLevelSetImage() override = default;
/** Initialize the sparse field layers */
void
InitializeLayers() override;
void
InitializeInternalLabelList() override;
private:
};
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkShiSparseLevelSetImage.hxx"
#endif
#endif // itkShiSparseLevelSetImage_h
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