Class cv::img_hash::ImgHashBase

The base class for image hash algorithms.

#include <opencv2/img_hash/img_hash_base.hpp>

Collaboration diagram for cv::img_hash::ImgHashBase:

Public Member Functions

Public Member Functions inherited from cv::Algorithm

Return	Name	Description
	Algorithm()
	~Algorithm()
void	clear()	Clears the algorithm state.
bool	empty()	Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read.
String	getDefaultName()
void	read(const FileNode & fn)	Reads algorithm parameters from a file storage.
void	save(const String & filename)
void	write(     const Ptr< FileStorage > & fs,     const String & name = String() )
void	write(FileStorage & fs)	Stores algorithm parameters in a file storage.
void	write(     FileStorage & fs,     const String & name )

Static Public Member Functions

Static Public Member Functions inherited from cv::Algorithm

Return	Name	Description
static Ptr< _Tp >	load(     const String & filename,     const String & objname = String() )	Loads algorithm from the file.
static Ptr< _Tp >	loadFromString(     const String & strModel,     const String & objname = String() )	Loads algorithm from a String.
static Ptr< _Tp >	read(const FileNode & fn)	Reads algorithm from the file node.

Additional Inherited Members

Protected Member Functions inherited from cv::Algorithm

Return	Name	Description
void	writeFormat(FileStorage & fs)

Detailed Description

The base class for image hash algorithms.

Constructor & Destructor Documentation

~ImgHashBase()

cv::img_hash::ImgHashBase::~ImgHashBase()

ImgHashBase()

cv::img_hash::ImgHashBase::ImgHashBase()

Member Function Documentation

compare()

double cv::img_hash::ImgHashBase::compare(
cv::InputArray hashOne,
cv::InputArray hashTwo )

Python:

cv.img_hash.ImgHashBase.compare(hashOne, hashTwo) -> retval

Compare the hash value between inOne and inTwo.

Parameters

• hashOne — Hash value one

• hashTwo — Hash value two

Returns

value indicate similarity between inOne and inTwo, the meaning of the value vary from algorithms to algorithms

compute()

void cv::img_hash::ImgHashBase::compute(
cv::InputArray inputArr,
cv::OutputArray outputArr )

Python:

cv.img_hash.ImgHashBase.compute(inputArr[, outputArr]) -> outputArr

Computes hash of the input image.

Parameters

• inputArr — input image want to compute hash value

• outputArr — hash of the image

Member Data Documentation

pImpl

Ptr< ImgHashImpl > cv::img_hash::ImgHashBase::pImpl

Source file

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

• opencv2/img_hash/img_hash_base.hpp