OpenCV  4.1.2-dev
Open Source Computer Vision
Public Member Functions | Protected Member Functions | Protected Attributes | List of all members

The base class for image hash algorithms. More...

#include <opencv2/img_hash/img_hash_base.hpp>

Inheritance diagram for cv::img_hash::ImgHashBase:
cv::Algorithm cv::img_hash::AverageHash cv::img_hash::BlockMeanHash cv::img_hash::ColorMomentHash cv::img_hash::MarrHildrethHash cv::img_hash::PHash cv::img_hash::RadialVarianceHash

Public Member Functions

 ~ImgHashBase ()
 
double compare (cv::InputArray hashOne, cv::InputArray hashTwo) const
 Compare the hash value between inOne and inTwo. More...
 
void compute (cv::InputArray inputArr, cv::OutputArray outputArr)
 Computes hash of the input image. More...
 
- Public Member Functions inherited from cv::Algorithm
 Algorithm ()
 
virtual ~Algorithm ()
 
virtual void clear ()
 Clears the algorithm state. More...
 
virtual bool empty () const
 Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read. More...
 
virtual String getDefaultName () const
 
virtual void read (const FileNode &fn)
 Reads algorithm parameters from a file storage. More...
 
virtual void save (const String &filename) const
 
virtual void write (FileStorage &fs) const
 Stores algorithm parameters in a file storage. More...
 
void write (const Ptr< FileStorage > &fs, const String &name=String()) const
 simplified API for language bindings This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
 

Protected Member Functions

 ImgHashBase ()
 
- Protected Member Functions inherited from cv::Algorithm
void writeFormat (FileStorage &fs) const
 

Protected Attributes

Ptr< ImgHashImpl > pImpl
 

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. More...
 
template<typename _Tp >
static Ptr< _Tp > loadFromString (const String &strModel, const String &objname=String())
 Loads algorithm from a String. More...
 
template<typename _Tp >
static Ptr< _Tp > read (const FileNode &fn)
 Reads algorithm from the file node. More...
 

Detailed Description

The base class for image hash algorithms.

Constructor & Destructor Documentation

§ ~ImgHashBase()

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

§ ImgHashBase()

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

Member Function Documentation

§ compare()

double cv::img_hash::ImgHashBase::compare ( cv::InputArray  hashOne,
cv::InputArray  hashTwo 
) const
Python:
retval=cv.img_hash_ImgHashBase.compare(hashOne, hashTwo)

Compare the hash value between inOne and inTwo.

Parameters
hashOneHash value one
hashTwoHash 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:
outputArr=cv.img_hash_ImgHashBase.compute(inputArr[, outputArr])

Computes hash of the input image.

Parameters
inputArrinput image want to compute hash value
outputArrhash of the image

Member Data Documentation

§ pImpl

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

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