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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkGaussianSpatialFunction.h.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:36 $ |
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Version: $Revision: 1.4 $ |
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Copyright (c) Insight Software Consortium. All rights reserved. |
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See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. |
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This software is distributed WITHOUT ANY WARRANTY; without even |
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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PURPOSE. See the above copyright notices for more information. |
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=========================================================================*/ |
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#ifndef __itkGaussianSpatialFunction_h |
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#define __itkGaussianSpatialFunction_h |
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#include "itkSpatialFunction.h" |
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#include "itkFixedArray.h" |
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#include "itkPoint.h" |
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namespace itk |
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{ |
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/** \class GaussianSpatialFunction |
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* \brief N-dimensional gaussian spatial function class |
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* |
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* GaussianSpatialFunction implements a standard gaussian curve in N-d. |
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* m_Normalized determines whether or not the Gaussian is normalized |
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* (whether or not the sum over infinite space is 1.0) |
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* |
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* m_Scale scales the output of the Gaussian to span a range |
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* larger than 0->1, and is often set to the maximum value |
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* of the output data type (for instance, 255 for uchars) |
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* |
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* \ingroup SpatialFunctions |
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*/ |
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template <typename TOutput=double, |
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unsigned int VImageDimension=3, |
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typename TInput=Point<double, VImageDimension> > |
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class ITK_EXPORT GaussianSpatialFunction : public SpatialFunction<TOutput, VImageDimension, TInput> |
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{ |
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public: |
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/** Standard class typedefs. */ |
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typedef GaussianSpatialFunction Self; |
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TDA |
typedef SpatialFunction<TOutput, VImageDimension, TInput> Superclass; |
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TDA |
typedef SmartPointer<Self> Pointer; |
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TDA |
typedef SmartPointer<const Self> ConstPointer; |
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/** Method for creation through the object factory. */ |
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itkNewMacro(Self); |
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/** Run-time type information (and related methods). */ |
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itkTypeMacro(GaussianSpatialFunction, SpatialFunction); |
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/** Input type for the function. */ |
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typedef typename Superclass::InputType InputType; |
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/** Output type for the function. */ |
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typedef typename Superclass::OutputType OutputType; |
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/** Type used to store gaussian parameters. */ |
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typedef FixedArray<double, VImageDimension> ArrayType; |
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/** Evaluate the function at a given position. */ |
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OutputType Evaluate(const TInput& position) const; |
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/** Gets and sets for gaussian parameters */ |
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itkSetMacro(Scale, double); |
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itkGetMacro(Scale, double); |
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itkSetMacro(Normalized, bool); |
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itkGetMacro(Normalized, bool); |
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itkSetMacro(Sigma, ArrayType); |
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itkGetMacro(Sigma, ArrayType); |
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itkSetMacro(Mean, ArrayType); |
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itkGetMacro(Mean, ArrayType); |
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protected: |
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GaussianSpatialFunction(); |
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virtual ~GaussianSpatialFunction(); |
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void PrintSelf(std::ostream& os, Indent indent) const; |
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private: |
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GaussianSpatialFunction(const Self&); //purposely not implemented |
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void operator=(const Self&); //purposely not implemented |
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/** The standard deviation in each direction. */ |
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ArrayType m_Sigma; |
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/** The mean in each direction. */ |
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ArrayType m_Mean; |
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/** A scale factor multiplied by the true value of the Gaussian. */ |
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double m_Scale; |
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/** Whether or not to normalize the Gaussian. */ |
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bool m_Normalized; |
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}; |
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} // end namespace itk |
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#ifndef ITK_MANUAL_INSTANTIATION |
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#include "itkGaussianSpatialFunction.txx" |
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#endif |
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#endif |
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