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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkDensityFunction.h,v $
Language: C++
Date: $Date: 2009-03-04 15:23:46 $
Version: $Revision: 1.11 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkDensityFunction_h
#define __itkDensityFunction_h
#include "itkMembershipFunctionBase.h"
#include "itkMeasurementVectorTraits.h"
namespace itk {
namespace Statistics {
/** \class DensityFunction
* \brief DensityFunction class defines common interfaces for
* density functions.
*
* The Evaluate method returns density value for the input measurement vector.
* The length of the measurement vector must be set using
* \c SetMeasurementVectorSize() before using the class.
*/
template< class TMeasurementVector >
class ITK_EXPORT DensityFunction :
public MembershipFunctionBase< TMeasurementVector >
{
public:
/** Standard class typedefs */
typedef DensityFunction Self;
typedef MembershipFunctionBase< TMeasurementVector > Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Strandard macros */
itkTypeMacro(DensityFunction, MembershipFunctionBase);
/** Length of each measurement vector */
typedef unsigned int MeasurementVectorSizeType;
/** Method to get probability of an instance. The return value is the
* value of the density function, not probability. */
virtual double Evaluate(const TMeasurementVector &measurement) const = 0;
protected:
DensityFunction() {}
virtual ~DensityFunction() {}
void PrintSelf(std::ostream& os, Indent indent) const
{
Superclass::PrintSelf(os,indent);
}
private:
}; // end of class
} // end of namespace Statistics
} // end namespace itk
#endif
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