Experimental 2D Features Algorithms

Classes
class	cv::xfeatures2d::AgastFeatureDetector
	Wrapping class for feature detection using the AGAST method. : More...
class	cv::xfeatures2d::BriefDescriptorExtractor
	Class for computing BRIEF descriptors described in [22] . More...
class	cv::xfeatures2d::FREAK
	Class implementing the FREAK (Fast Retina Keypoint) keypoint descriptor, described in [3] . More...
class	cv::xfeatures2d::LUCID
	Class implementing the locally uniform comparison image descriptor, described in [142]. More...
class	cv::xfeatures2d::StarDetector
	The class implements the keypoint detector introduced by [1], synonym of StarDetector. : More...

Functions
void	cv::xfeatures2d::AGAST (InputArray image, std::vector< KeyPoint > &keypoints, int threshold, bool nonmaxSuppression=true)
void	cv::xfeatures2d::AGAST (InputArray image, std::vector< KeyPoint > &keypoints, int threshold, bool nonmaxSuppression, int type)
	Detects corners using the AGAST algorithm. More...

Detailed Description

This section describes experimental algorithms for 2d feature detection.

Function Documentation

void cv::xfeatures2d::AGAST	(	InputArray	image,
		std::vector< KeyPoint > &	keypoints,
		int	threshold,
		bool	nonmaxSuppression = true
	)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

void cv::xfeatures2d::AGAST	(	InputArray	image,
		std::vector< KeyPoint > &	keypoints,
		int	threshold,
		bool	nonmaxSuppression,
		int	type
	)

Detects corners using the AGAST algorithm.

Parameters

image	grayscale image where keypoints (corners) are detected.
keypoints	keypoints detected on the image.
threshold	threshold on difference between intensity of the central pixel and pixels of a circle around this pixel.
nonmaxSuppression	if true, non-maximum suppression is applied to detected corners (keypoints).
type	one of the four neighborhoods as defined in the paper: AgastFeatureDetector::AGAST_5_8, AgastFeatureDetector::AGAST_7_12d, AgastFeatureDetector::AGAST_7_12s, AgastFeatureDetector::OAST_9_16

Detects corners using the AGAST algorithm by [81] .