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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkSelectiveSubsampleGenerator.h
Language: C++
Date: $Date$
Version: $Revision$
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 __itkSelectiveSubsampleGenerator_h
#define __itkSelectiveSubsampleGenerator_h
#include "itkObject.h"
#include "itkMembershipSample.h"
namespace itk {
namespace Statistics {
/** \class SelectiveSubsampleGenerator
* \brief SelectiveSubsampleGenerator generates a Subsample object
* that includes measurement vectors that belong to the classes that
* are specified by the SetSelectedClassLabels method.
*
* To instantiate an object of this class you have to provide two
* template arguments: the type of the input sample and the type of
* class mask sample.
*
* The input sample is a sample that has all the measurement vectors and
* the class mask sample contains class labels for their corresponding
* measurement vectors in the input sample. Therefore, the sizes of both
* should be the same.
*
* To generate a subsample that a part of the input sample that belongs
* to a set of classes, you should call SetSelectedClassLabels method
* with the class labels that you want to include in the output.
*
* \sa Subsample
*/
template< class TInputSample, class TClassMaskSample >
class ITK_EXPORT SelectiveSubsampleGenerator :
public Object
{
public:
/** Standard class typedefs. */
typedef SelectiveSubsampleGenerator Self;
typedef Object Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Standard Macros */
itkTypeMacro(SelectiveSubsampleGenerator, Object);
itkNewMacro(Self);
/** Input sample types alias */
typedef typename TInputSample::MeasurementVectorType MeasurementVectorType;
typedef typename TClassMaskSample::MeasurementType ClassLabelType;
typedef std::vector< ClassLabelType > ClassLabelVectorType;
/** Output: MembershipSample types */
typedef Subsample< TInputSample > OutputType;
typedef typename OutputType::Pointer OutputPointer;
/** Stores the input sample */
void SetInput(TInputSample* sample);
/** Returns the input sample pointer */
TInputSample* GetInput();
/** Stores the class mask sample */
void SetClassMask(const TClassMaskSample* classMask);
/** Returns the class mask sample pointer */
const TClassMaskSample* GetClassMask() const;
void SetSelectedClassLabels( const ClassLabelVectorType& classLabels )
{ m_SelectedClassLabels = classLabels; }
/** Returns the pointer to the MembershipSample object
* that has been generated by this */
const OutputType * GetOutput() const;
/** The actual output generation procedure. */
void GenerateData();
protected:
SelectiveSubsampleGenerator();
virtual ~SelectiveSubsampleGenerator() {}
void PrintSelf(std::ostream& os, Indent indent) const;
private:
TInputSample* m_Input;
const TClassMaskSample* m_ClassMask;
ClassLabelVectorType m_SelectedClassLabels;
OutputPointer m_Output;
}; // end of class
} // end namespace Statistics
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkSelectiveSubsampleGenerator.txx"
#endif
#endif
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