/usr/include/ITK-4.5/itkGaussianSpatialFunction.h is in libinsighttoolkit4-dev 4.5.0-3.
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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 __itkGaussianSpatialFunction_h
#define __itkGaussianSpatialFunction_h
#include "itkSpatialFunction.h"
#include "itkFixedArray.h"
namespace itk
{
/** \class GaussianSpatialFunction
* \brief N-dimensional gaussian spatial function class
*
* GaussianSpatialFunction implements a standard gaussian curve in N-d.
* m_Normalized determines whether or not the Gaussian is normalized
* (whether or not the sum over infinite space is 1.0)
*
* m_Scale scales the output of the Gaussian to span a range
* larger than 0->1, and is often set to the maximum value
* of the output data type (for instance, 255 for uchars)
*
* \ingroup SpatialFunctions
* \ingroup ITKCommon
*/
template< typename TOutput = double,
unsigned int VImageDimension = 3,
typename TInput = Point< double, VImageDimension > >
class GaussianSpatialFunction:
public SpatialFunction< TOutput, VImageDimension, TInput >
{
public:
/** Standard class typedefs. */
typedef GaussianSpatialFunction Self;
typedef SpatialFunction< TOutput, VImageDimension, TInput > 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(GaussianSpatialFunction, SpatialFunction);
/** Input type for the function. */
typedef typename Superclass::InputType InputType;
/** Output type for the function. */
typedef typename Superclass::OutputType OutputType;
/** Type used to store gaussian parameters. */
typedef FixedArray< double, VImageDimension > ArrayType;
/** Evaluate the function at a given position. */
OutputType Evaluate(const TInput & position) const;
/** Gets and sets for gaussian parameters */
itkSetMacro(Scale, double);
itkGetConstMacro(Scale, double);
itkSetMacro(Normalized, bool);
itkGetConstMacro(Normalized, bool);
itkSetMacro(Sigma, ArrayType);
itkGetConstMacro(Sigma, ArrayType);
itkSetMacro(Mean, ArrayType);
itkGetConstMacro(Mean, ArrayType);
protected:
GaussianSpatialFunction();
virtual ~GaussianSpatialFunction();
void PrintSelf(std::ostream & os, Indent indent) const;
private:
GaussianSpatialFunction(const Self &); //purposely not implemented
void operator=(const Self &); //purposely not implemented
/** The standard deviation in each direction. */
ArrayType m_Sigma;
/** The mean in each direction. */
ArrayType m_Mean;
/** A scale factor multiplied by the true value of the Gaussian. */
double m_Scale;
/** Whether or not to normalize the Gaussian. */
bool m_Normalized;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkGaussianSpatialFunction.hxx"
#endif
#endif
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