DirectGraphicalModels::CPDFHistogram Class Reference

Histogram-based PDF class (1D) More...

#include <PDFHistogram.h>

Inheritance diagram for DirectGraphicalModels::CPDFHistogram:

Collaboration diagram for DirectGraphicalModels::CPDFHistogram:

Public Member Functions
	CPDFHistogram (void)
virtual	~CPDFHistogram (void)
virtual void	reset (void)
	Resets class variables. More...
virtual void	addPoint (Scalar point)
	Adds a sample point for PDF estimation. More...
virtual double	getDensity (Scalar point)
	Returns the probability density value for the argument point. More...
virtual Scalar	min (void) const
	Returns the lower argument boundary of the PDF. More...
virtual Scalar	max (void) const
	Returns the upper argument boundary of the PDF. More...
void	smooth (int nIt=1)
	Performs the gaussian smoothing on the histogram. More...
Public Member Functions inherited from DirectGraphicalModels::IPDF
	IPDF (void)
virtual	~IPDF (void)
bool	isEstimated (void)
	Checks weather the PDF was estimated. More...
Public Member Functions inherited from DirectGraphicalModels::CBaseRandomModel
	CBaseRandomModel (byte nStates)
	Constructor. More...
virtual	~CBaseRandomModel (void)
virtual void	save (const std::string &path, const std::string &name=std::string(), short idx=-1) const
	Saves the training data. More...
virtual void	load (const std::string &path, const std::string &name=std::string(), short idx=-1)
	Loads the training data. More...
byte	getNumStates (void) const
	Returns number of states (classes) More...

Protected Member Functions
virtual void	saveFile (FILE *pFile) const
	Saves the random model into the file. More...
virtual void	loadFile (FILE *pFile)
	Loads the random model from the file. More...
Protected Member Functions inherited from DirectGraphicalModels::CBaseRandomModel
std::string	generateFileName (const std::string &path, const std::string &name, short idx) const
	Generates name of the data file for storing random model parameters. More...

Private Attributes
long	m_data [256]

Additional Inherited Members
Protected Attributes inherited from DirectGraphicalModels::IPDF
long	m_nPoints
	The number of samples, added with the addPoint() function. More...
Protected Attributes inherited from DirectGraphicalModels::CBaseRandomModel
byte	m_nStates
	The number of states (classes) More...

Detailed Description

Histogram-based PDF class (1D)

This class makes use of distribution histograms in order to estimate the PDF. The length of the histogram is 255, thus arguments point of the addPoint() and getDensity() functions should be also in range [0; 255].

Author

Sergey G. Kosov, serge.nosp@m.y.ko.nosp@m.sov@p.nosp@m.roje.nosp@m.ct-10.nosp@m..de

Definition at line 16 of file PDFHistogram.h.

Constructor & Destructor Documentation

CPDFHistogram()

DirectGraphicalModels::CPDFHistogram::CPDFHistogram

(

void

)

Definition at line 6 of file PDFHistogram.cpp.

~CPDFHistogram()

DirectGraphicalModels::CPDFHistogram::~CPDFHistogram ( void  )

virtual

Definition at line 12 of file PDFHistogram.cpp.

Member Function Documentation

addPoint()

void DirectGraphicalModels::CPDFHistogram::addPoint ( Scalar  point )

virtual

Adds a sample point for PDF estimation.

Parameters

point

The sample point.

Implements DirectGraphicalModels::IPDF.

Definition at line 21 of file PDFHistogram.cpp.

getDensity()

double DirectGraphicalModels::CPDFHistogram::getDensity ( Scalar  point )

virtual

Returns the probability density value for the argument point.

Parameters

point

The sample point.

Returns

The corresponding probaility density value.

Implements DirectGraphicalModels::IPDF.

Definition at line 28 of file PDFHistogram.cpp.

loadFile()

void DirectGraphicalModels::CPDFHistogram::loadFile ( FILE *  pFile )

protectedvirtual

Loads the random model from the file.

Allows to re-use the class.

Parameters

pFile

Pointer to the file, opened for reading.

Implements DirectGraphicalModels::CBaseRandomModel.

Definition at line 49 of file PDFHistogram.cpp.

max()

virtual Scalar DirectGraphicalModels::CPDFHistogram::max ( void  ) const

inlinevirtual

Returns the upper argument boundary of the PDF.

Returns

The upper bound

Implements DirectGraphicalModels::IPDF.

Definition at line 27 of file PDFHistogram.h.

min()

virtual Scalar DirectGraphicalModels::CPDFHistogram::min ( void  ) const

inlinevirtual

Returns the lower argument boundary of the PDF.

Returns

The lower bound

Implements DirectGraphicalModels::IPDF.

Definition at line 26 of file PDFHistogram.h.

reset()

void DirectGraphicalModels::CPDFHistogram::reset ( void  )

virtual

Resets class variables.

Allows to re-use the class.

Implements DirectGraphicalModels::CBaseRandomModel.

Definition at line 15 of file PDFHistogram.cpp.

saveFile()

void DirectGraphicalModels::CPDFHistogram::saveFile ( FILE *  pFile ) const

protectedvirtual

Saves the random model into the file.

Allows to re-use the class.

Parameters

pFile

Pointer to the file, opened for writing.

Implements DirectGraphicalModels::CBaseRandomModel.

Definition at line 43 of file PDFHistogram.cpp.

smooth()

void DirectGraphicalModels::CPDFHistogram::smooth

(

int

nIt = 1

)

Performs the gaussian smoothing on the histogram.

Performs nIt iterations of gaussian smothing of the histograms in order to overcome the "over-fitting" problem

Parameters

nIt	Number of iterations

Definition at line 34 of file PDFHistogram.cpp.

Member Data Documentation

m_data

long DirectGraphicalModels::CPDFHistogram::m_data[256]

private

Definition at line 43 of file PDFHistogram.h.

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The documentation for this class was generated from the following files:

• D:/Projects/DGM/modules/DGM/PDFHistogram.h
• D:/Projects/DGM/modules/DGM/PDFHistogram.cpp