OpenCV  3.2.0
Open Source Computer Vision
Public Member Functions | Static Public Member Functions | List of all members
cv::xfeatures2d::SURF Class Referenceabstract

Class for extracting Speeded Up Robust Features from an image [9] . More...

#include "nonfree.hpp"

Inheritance diagram for cv::xfeatures2d::SURF:
cv::Feature2D cv::Algorithm

Public Member Functions

virtual bool getExtended () const =0
virtual double getHessianThreshold () const =0
virtual int getNOctaveLayers () const =0
virtual int getNOctaves () const =0
virtual bool getUpright () const =0
virtual void setExtended (bool extended)=0
virtual void setHessianThreshold (double hessianThreshold)=0
virtual void setNOctaveLayers (int nOctaveLayers)=0
virtual void setNOctaves (int nOctaves)=0
virtual void setUpright (bool upright)=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
 Return true if detector object is empty. More...
void read (const String &fileName)
virtual void read (const FileNode &)
 Reads algorithm parameters from a file storage. More...
void write (const String &fileName) const
virtual void write (FileStorage &) const
 Stores algorithm parameters in a file storage. More...
- Public Member Functions inherited from cv::Algorithm
 Algorithm ()
virtual ~Algorithm ()
virtual void clear ()
 Clears the algorithm state. More...
virtual String getDefaultName () const
virtual void save (const String &filename) const

Static Public Member Functions

static Ptr< SURFcreate (double hessianThreshold=100, int nOctaves=4, int nOctaveLayers=3, bool extended=false, bool upright=false)
- 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 extracting Speeded Up Robust Features from an image [9] .

The algorithm parameters:

Member Function Documentation

§ create()

static Ptr<SURF> cv::xfeatures2d::SURF::create ( double  hessianThreshold = 100,
int  nOctaves = 4,
int  nOctaveLayers = 3,
bool  extended = false,
bool  upright = false 
hessianThresholdThreshold for hessian keypoint detector used in SURF.
nOctavesNumber of pyramid octaves the keypoint detector will use.
nOctaveLayersNumber of octave layers within each octave.
extendedExtended descriptor flag (true - use extended 128-element descriptors; false - use 64-element descriptors).
uprightUp-right or rotated features flag (true - do not compute orientation of features; false - compute orientation).

§ getExtended()

virtual bool cv::xfeatures2d::SURF::getExtended ( ) const
pure virtual

§ getHessianThreshold()

virtual double cv::xfeatures2d::SURF::getHessianThreshold ( ) const
pure virtual

§ getNOctaveLayers()

virtual int cv::xfeatures2d::SURF::getNOctaveLayers ( ) const
pure virtual

§ getNOctaves()

virtual int cv::xfeatures2d::SURF::getNOctaves ( ) const
pure virtual

§ getUpright()

virtual bool cv::xfeatures2d::SURF::getUpright ( ) const
pure virtual

§ setExtended()

virtual void cv::xfeatures2d::SURF::setExtended ( bool  extended)
pure virtual

§ setHessianThreshold()

virtual void cv::xfeatures2d::SURF::setHessianThreshold ( double  hessianThreshold)
pure virtual

§ setNOctaveLayers()

virtual void cv::xfeatures2d::SURF::setNOctaveLayers ( int  nOctaveLayers)
pure virtual

§ setNOctaves()

virtual void cv::xfeatures2d::SURF::setNOctaves ( int  nOctaves)
pure virtual

§ setUpright()

virtual void cv::xfeatures2d::SURF::setUpright ( bool  upright)
pure virtual

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