cv::img_hash::MarrHildrethHash Class Reference

Marr-Hildreth Operator Based Hash, slowest but more discriminative. More...

#include <opencv2/img_hash/marr_hildreth_hash.hpp>

Collaboration diagram for cv::img_hash::MarrHildrethHash:

Public Member Functions
float	getAlpha () const
	self explain
float	getScale () const
	self explain
void	setKernelParam (float alpha, float scale)
	Set Mh kernel parameters.
Public Member Functions inherited from cv::img_hash::ImgHashBase
	~ImgHashBase ()
double	compare (cv::InputArray hashOne, cv::InputArray hashTwo) const
	Compare the hash value between inOne and inTwo.
void	compute (cv::InputArray inputArr, cv::OutputArray outputArr)
	Computes hash of the input image.
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
void	write (const Ptr< FileStorage > &fs, const String &name=String()) const
virtual void	write (FileStorage &fs) const
	Stores algorithm parameters in a file storage.
void	write (FileStorage &fs, const String &name) const

Static Public Member Functions
static Ptr< MarrHildrethHash >	create (float alpha=2.0f, float scale=1.0f)
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
	MarrHildrethHash ()
Protected Member Functions inherited from cv::img_hash::ImgHashBase
	ImgHashBase ()
Protected Member Functions inherited from cv::Algorithm
void	writeFormat (FileStorage &fs) const

Additional Inherited Members
Protected Attributes inherited from cv::img_hash::ImgHashBase
Ptr< ImgHashImpl >	pImpl

Detailed Description

Marr-Hildreth Operator Based Hash, slowest but more discriminative.

See [316] for details.

Constructor & Destructor Documentation

MarrHildrethHash()

cv::img_hash::MarrHildrethHash::MarrHildrethHash ( )

inlineprotected

Member Function Documentation

create()

static Ptr< MarrHildrethHash > cv::img_hash::MarrHildrethHash::create ( float  alpha = 2.0f, float  scale = 1.0f  )

static

Python:
	cv.img_hash.MarrHildrethHash.create(	[, alpha[, scale]]	) ->	retval
	cv.img_hash.MarrHildrethHash_create(	[, alpha[, scale]]	) ->	retval

Parameters

alpha	int scale factor for marr wavelet (default=2).
scale	int level of scale factor (default = 1)

getAlpha()

float cv::img_hash::MarrHildrethHash::getAlpha

(

)

const

Python:
	cv.img_hash.MarrHildrethHash.getAlpha(		) ->	retval

self explain

getScale()

float cv::img_hash::MarrHildrethHash::getScale

(

)

const

Python:
	cv.img_hash.MarrHildrethHash.getScale(		) ->	retval

self explain

setKernelParam()

void cv::img_hash::MarrHildrethHash::setKernelParam	(	float	alpha,
		float	scale
	)

Python:
	cv.img_hash.MarrHildrethHash.setKernelParam(	alpha, scale	) ->	None

Set Mh kernel parameters.

Parameters

alpha	int scale factor for marr wavelet (default=2).
scale	int level of scale factor (default = 1)

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

• opencv2/img_hash/marr_hildreth_hash.hpp