cv::HausdorffDistanceExtractor Class Reference

A simple Hausdorff distance measure between shapes defined by contours. More...

#include <opencv2/shape/shape_distance.hpp>

Inheritance diagram for cv::HausdorffDistanceExtractor:

Public Member Functions
virtual int	getDistanceFlag () const =0
virtual float	getRankProportion () const =0
virtual void	setDistanceFlag (int distanceFlag)=0
	Set the norm used to compute the Hausdorff value between two shapes. It can be L1 or L2 norm.
virtual void	setRankProportion (float rankProportion)=0
	This method sets the rank proportion (or fractional value) that establish the Kth ranked value of the partial Hausdorff distance. Experimentally had been shown that 0.6 is a good value to compare shapes.
Public Member Functions inherited from cv::ShapeDistanceExtractor
virtual float	computeDistance (InputArray contour1, InputArray contour2)=0
	Compute the shape distance between two shapes defined by its contours.
Public Member Functions inherited from cv::Algorithm
	Algorithm ()
virtual	~Algorithm ()
virtual void	clear ()
	Clears the algorithm state.
virtual bool	empty () const
	Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read.
virtual String	getDefaultName () const
virtual void	read (const FileNode &fn)
	Reads algorithm parameters from a file storage.
virtual void	save (const String &filename) const
virtual void	write (FileStorage &fs) const
	Stores algorithm parameters in a file storage.
void	write (const Ptr< FileStorage > &fs, const String &name=String()) const
	simplified API for language bindingsThis is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Additional Inherited Members
Static Public Member Functions inherited from cv::Algorithm
template<typename _Tp >
static Ptr< _Tp >	load (const String &filename, const String &objname=String())
	Loads algorithm from the file.
template<typename _Tp >
static Ptr< _Tp >	loadFromString (const String &strModel, const String &objname=String())
	Loads algorithm from a String.
template<typename _Tp >
static Ptr< _Tp >	read (const FileNode &fn)
	Reads algorithm from the file node.
Protected Member Functions inherited from cv::Algorithm
void	writeFormat (FileStorage &fs) const

Detailed Description

A simple Hausdorff distance measure between shapes defined by contours.

according to the paper "Comparing Images using the Hausdorff distance." by D.P. Huttenlocher, G.A. Klanderman, and W.J. Rucklidge. (PAMI 1993). :

Member Function Documentation

virtual int cv::HausdorffDistanceExtractor::getDistanceFlag ( ) const

pure virtual

Python:
	retval	=	cv.HausdorffDistanceExtractor.getDistanceFlag(		)

virtual float cv::HausdorffDistanceExtractor::getRankProportion ( ) const

pure virtual

Python:
	retval	=	cv.HausdorffDistanceExtractor.getRankProportion(		)

virtual void cv::HausdorffDistanceExtractor::setDistanceFlag ( int  distanceFlag )

pure virtual

Python:
	None	=	cv.HausdorffDistanceExtractor.setDistanceFlag(	distanceFlag	)

Set the norm used to compute the Hausdorff value between two shapes. It can be L1 or L2 norm.

Parameters

distanceFlag

Flag indicating which norm is used to compute the Hausdorff distance (NORM_L1, NORM_L2).

virtual void cv::HausdorffDistanceExtractor::setRankProportion ( float  rankProportion )

pure virtual

Python:
	None	=	cv.HausdorffDistanceExtractor.setRankProportion(	rankProportion	)

This method sets the rank proportion (or fractional value) that establish the Kth ranked value of the partial Hausdorff distance. Experimentally had been shown that 0.6 is a good value to compare shapes.

Parameters

rankProportion

fractional value (between 0 and 1).

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

• shape_distance.hpp