OpenCV  4.5.4
Open Source Computer Vision
Public Types | Public Member Functions | Static Public Member Functions | List of all members
cv::KAZE Class Referenceabstract

Class implementing the KAZE keypoint detector and descriptor extractor, described in [10] . More...

#include <opencv2/features2d.hpp>

Inheritance diagram for cv::KAZE:
cv::Feature2D cv::Algorithm

Public Types

enum  DiffusivityType {
  DIFF_PM_G1 = 0,
  DIFF_PM_G2 = 1,

Public Member Functions

virtual String getDefaultName () const CV_OVERRIDE
virtual KAZE::DiffusivityType getDiffusivity () const =0
virtual bool getExtended () const =0
virtual int getNOctaveLayers () const =0
virtual int getNOctaves () const =0
virtual double getThreshold () const =0
virtual bool getUpright () const =0
virtual void setDiffusivity (KAZE::DiffusivityType diff)=0
virtual void setExtended (bool extended)=0
virtual void setNOctaveLayers (int octaveLayers)=0
virtual void setNOctaves (int octaves)=0
virtual void setThreshold (double threshold)=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 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< KAZEcreate (bool extended=false, bool upright=false, float threshold=0.001f, int nOctaves=4, int nOctaveLayers=4, KAZE::DiffusivityType diffusivity=KAZE::DIFF_PM_G2)
 The KAZE constructor. More...
- 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 implementing the KAZE keypoint detector and descriptor extractor, described in [10] .

AKAZE descriptor can only be used with KAZE or AKAZE keypoints .. [ABD12] KAZE Features. Pablo F. Alcantarilla, Adrien Bartoli and Andrew J. Davison. In European Conference on Computer Vision (ECCV), Fiorenze, Italy, October 2012.

Member Enumeration Documentation

◆ DiffusivityType


Member Function Documentation

◆ create()

static Ptr<KAZE> cv::KAZE::create ( bool  extended = false,
bool  upright = false,
float  threshold = 0.001f,
int  nOctaves = 4,
int  nOctaveLayers = 4,
KAZE::DiffusivityType  diffusivity = KAZE::DIFF_PM_G2 
cv.KAZE_create([, extended[, upright[, threshold[, nOctaves[, nOctaveLayers[, diffusivity]]]]]]) -> retval

The KAZE constructor.

extendedSet to enable extraction of extended (128-byte) descriptor.
uprightSet to enable use of upright descriptors (non rotation-invariant).
thresholdDetector response threshold to accept point
nOctavesMaximum octave evolution of the image
nOctaveLayersDefault number of sublevels per scale level
diffusivityDiffusivity type. DIFF_PM_G1, DIFF_PM_G2, DIFF_WEICKERT or DIFF_CHARBONNIER

◆ getDefaultName()

virtual String cv::KAZE::getDefaultName ( ) const
cv.KAZE.getDefaultName() -> retval

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.

◆ getDiffusivity()

virtual KAZE::DiffusivityType cv::KAZE::getDiffusivity ( ) const
pure virtual
cv.KAZE.getDiffusivity() -> retval

◆ getExtended()

virtual bool cv::KAZE::getExtended ( ) const
pure virtual
cv.KAZE.getExtended() -> retval

◆ getNOctaveLayers()

virtual int cv::KAZE::getNOctaveLayers ( ) const
pure virtual
cv.KAZE.getNOctaveLayers() -> retval

◆ getNOctaves()

virtual int cv::KAZE::getNOctaves ( ) const
pure virtual
cv.KAZE.getNOctaves() -> retval

◆ getThreshold()

virtual double cv::KAZE::getThreshold ( ) const
pure virtual
cv.KAZE.getThreshold() -> retval

◆ getUpright()

virtual bool cv::KAZE::getUpright ( ) const
pure virtual
cv.KAZE.getUpright() -> retval

◆ setDiffusivity()

virtual void cv::KAZE::setDiffusivity ( KAZE::DiffusivityType  diff)
pure virtual
cv.KAZE.setDiffusivity(diff) -> None

◆ setExtended()

virtual void cv::KAZE::setExtended ( bool  extended)
pure virtual
cv.KAZE.setExtended(extended) -> None

◆ setNOctaveLayers()

virtual void cv::KAZE::setNOctaveLayers ( int  octaveLayers)
pure virtual
cv.KAZE.setNOctaveLayers(octaveLayers) -> None

◆ setNOctaves()

virtual void cv::KAZE::setNOctaves ( int  octaves)
pure virtual
cv.KAZE.setNOctaves(octaves) -> None

◆ setThreshold()

virtual void cv::KAZE::setThreshold ( double  threshold)
pure virtual
cv.KAZE.setThreshold(threshold) -> None

◆ setUpright()

virtual void cv::KAZE::setUpright ( bool  upright)
pure virtual
cv.KAZE.setUpright(upright) -> None

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