Class for implementing the wrapper which makes detectors and extractors to be affine invariant, described as ASIFT in [239] . More...

#include <opencv2/features2d.hpp>

Inheritance diagram for cv::AffineFeature:

Public Member Functions
virtual String	getDefaultName () const CV_OVERRIDE

virtual void	getViewParams (std::vector< float > &tilts, std::vector< float > &rolls) const =0

virtual void	setViewParams (const std::vector< float > &tilts, const std::vector< float > &rolls)=0

Public Member Functions inherited from cv::Feature2D
virtual	~Feature2D ()

virtual void	compute (InputArray image, std::vector< KeyPoint > &keypoints, OutputArray descriptors)
	Computes the descriptors for a set of keypoints detected in an image (first variant) or image set (second variant). More...

virtual void	compute (InputArrayOfArrays images, std::vector< std::vector< KeyPoint > > &keypoints, OutputArrayOfArrays descriptors)

virtual int	defaultNorm () const

virtual int	descriptorSize () const

virtual int	descriptorType () const

virtual void	detect (InputArray image, std::vector< KeyPoint > &keypoints, InputArray mask=noArray())
	Detects keypoints in an image (first variant) or image set (second variant). More...

virtual void	detect (InputArrayOfArrays images, std::vector< std::vector< KeyPoint > > &keypoints, InputArrayOfArrays masks=noArray())

virtual void	detectAndCompute (InputArray image, InputArray mask, std::vector< KeyPoint > &keypoints, OutputArray descriptors, bool useProvidedKeypoints=false)

virtual bool	empty () const CV_OVERRIDE
	Return true if detector object is empty. More...

void	read (const String &fileName)

virtual void	read (const FileNode &) CV_OVERRIDE
	Reads algorithm parameters from a file storage. More...

void	write (const String &fileName) const

virtual void	write (FileStorage &) const CV_OVERRIDE
	Stores algorithm parameters in a file storage. More...

void	write (const Ptr< FileStorage > &fs, const String &name=String()) const

Public Member Functions inherited from cv::Algorithm
	Algorithm ()

virtual	~Algorithm ()

virtual void	clear ()
	Clears the algorithm state. More...

virtual void	save (const String &filename) const

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...

Static Public Member Functions
static Ptr< AffineFeature >	create (const Ptr< Feature2D > &backend, int maxTilt=5, int minTilt=0, float tiltStep=1.4142135623730951f, float rotateStepBase=72)

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...

Additional Inherited Members
Protected Member Functions inherited from cv::Algorithm
void	writeFormat (FileStorage &fs) const

Detailed Description

Class for implementing the wrapper which makes detectors and extractors to be affine invariant, described as ASIFT in [239] .

Member Function Documentation

◆ create()

static Ptr<AffineFeature> cv::AffineFeature::create	(	const Ptr< Feature2D > &	backend,
		int	maxTilt = `5`,
		int	minTilt = `0`,
		float	tiltStep = `1.4142135623730951f`,
		float	rotateStepBase = `72`
	)

static

Python:
	retval	=	cv.AffineFeature_create(	backend[, maxTilt[, minTilt[, tiltStep[, rotateStepBase]]]]	)

Parameters

backend	The detector/extractor you want to use as backend.
maxTilt	The highest power index of tilt factor. 5 is used in the paper as tilt sampling range n.
minTilt	The lowest power index of tilt factor. 0 is used in the paper.
tiltStep	Tilt sampling step \(\delta_t\) in Algorithm 1 in the paper.
rotateStepBase	Rotation sampling step factor b in Algorithm 1 in the paper.

◆ getDefaultName()

virtual String cv::AffineFeature::getDefaultName ( ) const

virtual

Python:
	retval	=	cv.AffineFeature.getDefaultName(		)

Returns the algorithm string identifier. This string is used as top level xml/yml node tag when the object is saved to a file or string.

Reimplemented from cv::Feature2D.

◆ getViewParams()

virtual void cv::AffineFeature::getViewParams	(	std::vector< float > &	tilts,
		std::vector< float > &	rolls
	)		const

pure virtual

Python:
	None	=	cv.AffineFeature.getViewParams(	tilts, rolls	)

◆ setViewParams()

virtual void cv::AffineFeature::setViewParams	(	const std::vector< float > &	tilts,
		const std::vector< float > &	rolls
	)

pure virtual

Python:
	None	=	cv.AffineFeature.setViewParams(	tilts, rolls	)

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

opencv2/features2d.hpp

Public Member Functions