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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkDenseFrequencyContainer.h,v $
Language: C++
Date: $Date: 2009-03-04 15:23:44 $
Version: $Revision: 1.13 $
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 __itkDenseFrequencyContainer_h
#define __itkDenseFrequencyContainer_h
#include <map>
#include "itkObjectFactory.h"
#include "itkObject.h"
#include "itkValarrayImageContainer.h"
#include "itkNumericTraits.h"
namespace itk {
namespace Statistics {
/** \class DenseFrequencyContainer
* \brief his class is a container for frequencies of bins in an histogram.
*
* This class uses the ValarrayImageContainer class to store
* frequencies. If the histogram has many zero frequency bins.
* use SparseFrequencyContainer. You should access each bin
* by (InstanceIdentifier)index or measurement vector.
*
* \sa Histogram, SparseFrequencyContainer
*/
class ITK_EXPORT DenseFrequencyContainer
: public Object
{
public:
/** Standard class typedefs */
typedef DenseFrequencyContainer Self;
typedef Object Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(DenseFrequencyContainer, Object);
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** InstanceIdenfitifer type alias */
typedef unsigned long InstanceIdentifier;
/** Frequency type alias */
typedef float FrequencyType;
/** Total frequency type */
typedef NumericTraits<FrequencyType>::AccumulateType TotalFrequencyType;
/** Internal storage class typedefs */
typedef ValarrayImageContainer< InstanceIdentifier, FrequencyType >
FrequencyContainerType;
typedef FrequencyContainerType::Pointer FrequencyContainerPointer;
/** Calls the Initialize method of superclass to generate the offset table
* and prepare the frequency container */
void Initialize(unsigned long length);
/** Calls the SetToZero method of superclass to initialize all the bins to Zero.
* This should be done before starting to call the IncreaseFrequency method. */
void SetToZero();
/** Sets the frequency of histogram using instance identifier. It returns
* false when the Id is out of bounds. */
bool SetFrequency(const InstanceIdentifier id, const FrequencyType value);
/** Increases the frequency of a bin specified by the InstanceIdentifier by
* one. This function is convinient to create a histogram. It returns false
* when the bin id is out of bounds. */
bool IncreaseFrequency(const InstanceIdentifier id,
const FrequencyType value);
/** Method to get the frequency of a bin from the histogram. It returns zero
* when the Id is out of bounds. */
FrequencyType GetFrequency(const InstanceIdentifier id) const;
/** Gets the sum of the frequencies */
TotalFrequencyType GetTotalFrequency()
{ return m_TotalFrequency; }
protected:
DenseFrequencyContainer();
virtual ~DenseFrequencyContainer() {}
void PrintSelf(std::ostream& os, Indent indent) const;
private:
DenseFrequencyContainer(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
/** Internal storage */
FrequencyContainerPointer m_FrequencyContainer;
TotalFrequencyType m_TotalFrequency;
}; // end of class
} // end of namespace Statistics
} // end of namespace itk
#endif
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