Class implementing the KAZE keypoint detector and descriptor extractor, described in [2] . More...
#include <opencv2/features2d.hpp>
Public Types | |
enum | DiffusivityType { DIFF_PM_G1 = 0, DIFF_PM_G2 = 1, DIFF_WEICKERT = 2, DIFF_CHARBONNIER = 3 } |
Public Member Functions | |
virtual void | clear () |
Clears the algorithm state. More... | |
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) |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More... | |
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()) |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More... | |
virtual void | detectAndCompute (InputArray image, InputArray mask, std::vector< KeyPoint > &keypoints, OutputArray descriptors, bool useProvidedKeypoints=false) |
Detects keypoints and computes the descriptors. More... | |
virtual bool | empty () const CV_OVERRIDE |
Return true if detector object is empty. More... | |
virtual String | getDefaultName () const CV_OVERRIDE |
Returns the algorithm string identifier. More... | |
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 |
void | read (const String &fileName) |
virtual void | read (const FileNode &) CV_OVERRIDE |
Reads algorithm parameters from a file storage. More... | |
virtual void | save (const String &filename) const |
Saves the algorithm to a file. More... | |
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 |
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 |
Static Public Member Functions | |
static Ptr< 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) |
The KAZE constructor. More... | |
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... | |
Protected Member Functions | |
void | writeFormat (FileStorage &fs) const |
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inlinevirtualinherited |
Clears the algorithm state.
Reimplemented in cv::FlannBasedMatcher, and cv::DescriptorMatcher.
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virtualinherited |
Computes the descriptors for a set of keypoints detected in an image (first variant) or image set (second variant).
image | Image. |
keypoints | Input collection of keypoints. Keypoints for which a descriptor cannot be computed are removed. Sometimes new keypoints can be added, for example: SIFT duplicates keypoint with several dominant orientations (for each orientation). |
descriptors | Computed descriptors. In the second variant of the method descriptors[i] are descriptors computed for a keypoints[i]. Row j is the keypoints (or keypoints[i]) is the descriptor for keypoint j-th keypoint. |
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virtualinherited |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
images | Image set. |
keypoints | Input collection of keypoints. Keypoints for which a descriptor cannot be computed are removed. Sometimes new keypoints can be added, for example: SIFT duplicates keypoint with several dominant orientations (for each orientation). |
descriptors | Computed descriptors. In the second variant of the method descriptors[i] are descriptors computed for a keypoints[i]. Row j is the keypoints (or keypoints[i]) is the descriptor for keypoint j-th keypoint. |
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static |
The KAZE constructor.
extended | Set to enable extraction of extended (128-byte) descriptor. |
upright | Set to enable use of upright descriptors (non rotation-invariant). |
threshold | Detector response threshold to accept point |
nOctaves | Maximum octave evolution of the image |
nOctaveLayers | Default number of sublevels per scale level |
diffusivity | Diffusivity type. DIFF_PM_G1, DIFF_PM_G2, DIFF_WEICKERT or DIFF_CHARBONNIER |
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virtualinherited |
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virtualinherited |
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virtualinherited |
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virtualinherited |
Detects keypoints in an image (first variant) or image set (second variant).
image | Image. |
keypoints | The detected keypoints. In the second variant of the method keypoints[i] is a set of keypoints detected in images[i] . |
mask | Mask specifying where to look for keypoints (optional). It must be a 8-bit integer matrix with non-zero values in the region of interest. |
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virtualinherited |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
images | Image set. |
keypoints | The detected keypoints. In the second variant of the method keypoints[i] is a set of keypoints detected in images[i] . |
masks | Masks for each input image specifying where to look for keypoints (optional). masks[i] is a mask for images[i]. |
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virtualinherited |
Detects keypoints and computes the descriptors.
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virtualinherited |
Return true if detector object is empty.
Reimplemented from cv::Algorithm.
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virtual |
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.
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pure virtual |
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pure virtual |
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pure virtual |
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pure virtual |
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pure virtual |
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pure virtual |
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inlinestaticinherited |
Loads algorithm from the file.
filename | Name of the file to read. |
objname | The optional name of the node to read (if empty, the first top-level node will be used) |
This is static template method of Algorithm. It's usage is following (in the case of SVM):
In order to make this method work, the derived class must overwrite Algorithm::read(const FileNode& fn).
References CV_Assert, cv::FileNode::empty(), cv::FileStorage::getFirstTopLevelNode(), cv::FileStorage::isOpened(), and cv::FileStorage::READ.
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inlinestaticinherited |
Loads algorithm from a String.
strModel | The string variable containing the model you want to load. |
objname | The optional name of the node to read (if empty, the first top-level node will be used) |
This is static template method of Algorithm. It's usage is following (in the case of SVM):
References CV_WRAP, cv::FileNode::empty(), cv::FileStorage::getFirstTopLevelNode(), cv::FileStorage::MEMORY, and cv::FileStorage::READ.
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inherited |
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virtualinherited |
Reads algorithm parameters from a file storage.
Reimplemented from cv::Algorithm.
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virtualinherited |
Saves the algorithm to a file.
In order to make this method work, the derived class must implement Algorithm::write(FileStorage& fs).
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pure virtual |
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pure virtual |
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pure virtual |
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pure virtual |
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pure virtual |
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pure virtual |
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inherited |
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virtualinherited |
Stores algorithm parameters in a file storage.
Reimplemented from cv::Algorithm.
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inlineinherited |
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protectedinherited |