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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkCostFunction.h,v $
Language: C++
Date: $Date: 2007-03-22 21:39:37 $
Version: $Revision: 1.14 $
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 __itkCostFunction_h
#define __itkCostFunction_h
#include "itkObject.h"
#include "itkObjectFactory.h"
#include "itkArray.h"
#include "itkExceptionObject.h"
namespace itk
{
/** \class CostFunction
* \brief Base class for cost functions intended to be used with Optimizers.
*
* \ingroup Numerics Optimizers
*
*/
class ITK_EXPORT CostFunction : public Object
{
public:
/** Standard class typedefs. */
typedef CostFunction Self;
typedef Object Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(CostFunction, Object);
/** ParametersType typedef.
* It defines a position in the optimization search space. */
typedef double ParametersValueType;
typedef Array<ParametersValueType> ParametersType;
/** Return the number of parameters required to compute
* this cost function.
* This method MUST be overloaded by derived classes. */
virtual unsigned int GetNumberOfParameters(void) const = 0;
protected:
CostFunction() {};
virtual ~CostFunction() {};
void PrintSelf(std::ostream& os, Indent indent) const;
private:
CostFunction(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#endif
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