| OpenCV 5.0.0alpha Open Source Computer Vision

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xfeatures2d.hpp File Reference
`#include "opencv2/features.hpp"`
`#include "opencv2/xfeatures2d/nonfree.hpp"`
Include dependency graph for xfeatures2d.hpp:
This graph shows which files directly or indirectly include this file:

## Classes
class | cv::xfeatures2d::AffineFeature2D
| Class implementing affine adaptation for key points. More...
class | cv::xfeatures2d::AgastFeatureDetector
| Wrapping class for feature detection using the AGAST method. : More...
class | cv::xfeatures2d::AKAZE
| Class implementing the AKAZE keypoint detector and descriptor extractor, described in [10]. More...
class | cv::xfeatures2d::BEBLID
| Class implementing BEBLID (Boosted Efficient Binary Local Image Descriptor), described in [257] . More...
class | cv::xfeatures2d::BoostDesc
| Class implementing BoostDesc (Learning Image Descriptors with Boosting), described in [262] and [263]. More...
class | cv::xfeatures2d::BOWImgDescriptorExtractor
| Class to compute an image descriptor using the bag of visual words. More...
class | cv::xfeatures2d::BOWKMeansTrainer
| kmeans -based class to train visual vocabulary using the bag of visual words approach. : More...
class | cv::xfeatures2d::BOWTrainer
| Abstract base class for training the bag of visual words vocabulary from a set of descriptors. More...
class | cv::xfeatures2d::BriefDescriptorExtractor
| Class for computing BRIEF descriptors described in [47] . More...
class | cv::xfeatures2d::BRISK
| Class implementing the BRISK keypoint detector and descriptor extractor, described in [159] . More...
class | cv::xfeatures2d::DAISY
| Class implementing DAISY descriptor, described in [271]. More...
class | cv::xfeatures2d::Elliptic_KeyPoint
| Elliptic region around an interest point. More...
class | cv::xfeatures2d::FREAK
| Class implementing the FREAK (Fast Retina Keypoint) keypoint descriptor, described in [8] . More...
class | cv::xfeatures2d::HarrisLaplaceFeatureDetector
| Class implementing the Harris-Laplace feature detector as described in [193]. More...
class | cv::xfeatures2d::KAZE
| Class implementing the KAZE keypoint detector and descriptor extractor, described in [9] . More...
class | cv::xfeatures2d::LATCH
class | cv::xfeatures2d::LUCID
| Class implementing the locally uniform comparison image descriptor, described in [322]. More...
class | cv::xfeatures2d::MSDDetector
| Class implementing the MSD (Maximal Self-Dissimilarity) keypoint detector, described in [272]. More...
class | cv::xfeatures2d::PCTSignatures
| Class implementing PCT (position-color-texture) signature extraction as described in [152]. The algorithm is divided to a feature sampler and a clusterizer. Feature sampler produces samples at given set of coordinates. Clusterizer then produces clusters of these samples using k-means algorithm. Resulting set of clusters is the signature of the input image. More...
class | cv::xfeatures2d::PCTSignaturesSQFD
| Class implementing Signature Quadratic Form Distance (SQFD). More...
class | cv::xfeatures2d::StarDetector
| The class implements the keypoint detector introduced by [2], synonym of StarDetector. : More...
class | cv::xfeatures2d::TBMR
| Class implementing the Tree Based Morse Regions (TBMR) as described in [308] extended with scaled extraction ability. More...
class | cv::xfeatures2d::TEBLID
| Class implementing TEBLID (Triplet-based Efficient Binary Local Image Descriptor), described in [258]. More...
class | cv::xfeatures2d::VGG
| Class implementing VGG (Oxford Visual Geometry Group) descriptor trained end to end using "Descriptor Learning Using Convex Optimisation" (DLCO) aparatus described in [247]. More...

## Namespaces
namespace | cv
namespace | cv::xfeatures2d

## Functions
void | cv::xfeatures2d::AGAST (InputArray image, std::vector< KeyPoint > &keypoints, int threshold, bool nonmaxSuppression=true, AgastFeatureDetector::DetectorType type=AgastFeatureDetector::OAST_9_16)
| Detects corners using the AGAST algorithm.
void | cv::xfeatures2d::FASTForPointSet (InputArray image, std::vector< KeyPoint > &keypoints, int threshold, bool nonmaxSuppression=true, cv::FastFeatureDetector::DetectorType type=FastFeatureDetector::TYPE_9_16)
| Estimates cornerness for prespecified KeyPoints using the FAST algorithm.
void | cv::xfeatures2d::matchGMS (const Size &size1, const Size &size2, const std::vector< KeyPoint > &keypoints1, const std::vector< KeyPoint > &keypoints2, const std::vector< DMatch > &matches1to2, std::vector< DMatch > &matchesGMS, const bool withRotation=false, const bool withScale=false, const double thresholdFactor=6.0)
| GMS (Grid-based Motion Statistics) feature matching strategy described in [26] .
void | cv::xfeatures2d::matchLOGOS (const std::vector< KeyPoint > &keypoints1, const std::vector< KeyPoint > &keypoints2, const std::vector< int > &nn1, const std::vector< int > &nn2, std::vector< DMatch > &matches1to2)
| LOGOS (Local geometric support for high-outlier spatial verification) feature matching strategy described in [175] .