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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 itkDiscreteLevelSetImage_h
#define itkDiscreteLevelSetImage_h
#include "itkLevelSetImage.h"
namespace itk
{
/**
* \class DiscreteLevelSetImage
* \brief Abstract class for a level-set function on one Image.
*
* \tparam TOutput OutputType of the level-set function value
* \tparam VDimension Dimension of the underlying Image.
*
* \ingroup ITKLevelSetsv4
*/
template <typename TOutput, unsigned int VDimension>
class ITK_TEMPLATE_EXPORT DiscreteLevelSetImage : public LevelSetImage<Index<VDimension>, VDimension, TOutput>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(DiscreteLevelSetImage);
using IndexType = Index<VDimension>;
using Self = DiscreteLevelSetImage;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
using Superclass = LevelSetImage<IndexType, VDimension, TOutput>;
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(DiscreteLevelSetImage);
static constexpr unsigned int Dimension = Superclass::Dimension;
using typename Superclass::InputType;
using typename Superclass::OutputType;
using typename Superclass::OutputRealType;
using typename Superclass::GradientType;
using typename Superclass::HessianType;
using typename Superclass::LevelSetDataType;
/** Returns the gradient of the level set function at a given location inputIndex */
OutputType
Evaluate(const InputType & inputIndex) const override = 0;
/** Returns the image gradient of the level set function at a given location inputIndex */
GradientType
EvaluateGradient(const InputType & inputIndex) const override;
/** Returns the image hessian of the level set function at a given location inputIndex */
HessianType
EvaluateHessian(const InputType & inputIndex) const override;
/** Returns the image Laplacian of the level set function at a given location inputIndex */
OutputRealType
EvaluateLaplacian(const InputType & inputIndex) const override;
/** Returns the mean curvature of the level set function at a given location inputIndex */
OutputRealType
EvaluateMeanCurvature(const InputType & inputIndex) const override;
virtual GradientType
EvaluateForwardGradient(const InputType & inputIndex) const;
virtual GradientType
EvaluateBackwardGradient(const InputType & inputIndex) const;
/** Returns the value of the level set function at a given location inputIndex */
void
Evaluate(const InputType & inputIndex, LevelSetDataType & data) const override;
/** Returns the gradient of the level set function at a given location inputIndex
* as part of the LevelSetDataType */
void
EvaluateGradient(const InputType & inputIndex, LevelSetDataType & data) const override;
/** Returns the Hessian of the level set function at a given location inputIndex
* as part of the LevelSetDataType */
void
EvaluateHessian(const InputType & inputIndex, LevelSetDataType & data) const override;
/** Returns the Hessian of the level set function at a given location inputIndex
* as part of the LevelSetDataType */
void
EvaluateMeanCurvature(const InputType & inputIndex, LevelSetDataType & data) const override;
/** Returns the Laplacian of the level set function at a given location inputIndex
* as part of the LevelSetDataType */
void
EvaluateLaplacian(const InputType & inputIndex, LevelSetDataType & data) const override;
/** Returns the gradient of the level set function at a given location inputIndex
* as part of the LevelSetDataType */
void
EvaluateForwardGradient(const InputType & inputIndex, LevelSetDataType & data) const override;
/** Returns the gradient of the level set function at a given location inputIndex
* as part of the LevelSetDataType */
void
EvaluateBackwardGradient(const InputType & inputIndex, LevelSetDataType & data) const override;
protected:
DiscreteLevelSetImage() = default;
~DiscreteLevelSetImage() override = default;
/** Initial the level set pointer */
void
Initialize() override;
/** Copy level set information from data object */
void
CopyInformation(const DataObject * data) override;
/** Graft data object as level set object */
void
Graft(const DataObject * data) override;
private:
};
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkDiscreteLevelSetImage.hxx"
#endif
#endif // itkDiscreteLevelSetImage_h
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