Line_descriptor

Classes
struct	lsd::KeyLine
	A class to represent a line. More...
class	lsd::LSDDetector

Functions
cv::Point2f	lsd::KeyLine::getStartPoint () const
cv::Point2f	lsd::KeyLine::getEndPoint () const
cv::Point2f	lsd::KeyLine::getStartPointInOctave () const
cv::Point2f	lsd::KeyLine::getEndPointInOctave () const
	lsd::KeyLine::KeyLine ()
	lsd::LSDDetector::LSDDetector ()
static cv::Ptr< LSDDetector >	lsd::LSDDetector::createLSDDetector ()
	Creates ad LSDDetector object, using smart pointers. More...
void	lsd::LSDDetector::detect (const cv::Mat &image, CV_OUT std::vector< KeyLine > &keypoints, int scale, int numOctaves, const cv::Mat &mask=cv::Mat())
	Detect lines inside an image. More...
void	lsd::LSDDetector::detect (const std::vector< cv::Mat > &images, std::vector< std::vector< KeyLine > > &keylines, int scale, int numOctaves, const std::vector< cv::Mat > &masks=std::vector< cv::Mat >()) const

Variables
float	lsd::KeyLine::angle
int	lsd::KeyLine::class_id
int	lsd::KeyLine::octave
cv::Point2f	lsd::KeyLine::pt
float	lsd::KeyLine::response
float	lsd::KeyLine::size
float	lsd::KeyLine::startPointX
float	lsd::KeyLine::startPointY
float	lsd::KeyLine::endPointX
float	lsd::KeyLine::endPointY
float	lsd::KeyLine::sPointInOctaveX
float	lsd::KeyLine::sPointInOctaveY
float	lsd::KeyLine::ePointInOctaveX
float	lsd::KeyLine::ePointInOctaveY
float	lsd::KeyLine::lineLength
int	lsd::KeyLine::numOfPixels

Detailed Description

Function Documentation

cv::Ptr< LSDDetector > lsd::LSDDetector::createLSDDetector ( )

static

Creates ad LSDDetector object, using smart pointers.

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void lsd::LSDDetector::detect	(	const cv::Mat &	image,
		CV_OUT std::vector< KeyLine > &	keypoints,
		int	scale,
		int	numOctaves,
		const cv::Mat &	mask = cv::Mat()
	)

Detect lines inside an image.

Parameters

image	input image
keypoints	vector that will store extracted lines for one or more images
scale	scale factor used in pyramids generation
numOctaves	number of octaves inside pyramid
mask	mask matrix to detect only KeyLines of interest

void lsd::LSDDetector::detect	(	const std::vector< cv::Mat > &	images,
		std::vector< std::vector< KeyLine > > &	keylines,
		int	scale,
		int	numOctaves,
		const std::vector< cv::Mat > &	masks = std::vector<cv::Mat>()
	)		const

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

Parameters

images	input images
keylines	set of vectors that will store extracted lines for one or more images
scale	scale factor used in pyramids generation
numOctaves	number of octaves inside pyramid
masks	vector of mask matrices to detect only KeyLines of interest from each input image

cv::Point2f lsd::KeyLine::getEndPoint ( ) const

inline

Returns the end point of the line in the original image

cv::Point2f lsd::KeyLine::getEndPointInOctave ( ) const

inline

Returns the end point of the line in the octave it was extracted from

cv::Point2f lsd::KeyLine::getStartPoint ( ) const

inline

Returns the start point of the line in the original image

cv::Point2f lsd::KeyLine::getStartPointInOctave ( ) const

inline

Returns the start point of the line in the octave it was extracted from

lsd::KeyLine::KeyLine ( )

inline

constructor

lsd::LSDDetector::LSDDetector ( )

inline

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Variable Documentation

float lsd::KeyLine::angle

orientation of the line

int lsd::KeyLine::class_id

object ID, that can be used to cluster keylines by the line they represent

float lsd::KeyLine::endPointX

float lsd::KeyLine::endPointY

float lsd::KeyLine::ePointInOctaveX

float lsd::KeyLine::ePointInOctaveY

float lsd::KeyLine::lineLength

the length of line

int lsd::KeyLine::numOfPixels

number of pixels covered by the line

int lsd::KeyLine::octave

octave (pyramid layer), from which the keyline has been extracted

cv::Point2f lsd::KeyLine::pt

coordinates of the middlepoint

float lsd::KeyLine::response

the response, by which the strongest keylines have been selected. It's represented by the ratio between line's length and maximum between image's width and height

float lsd::KeyLine::size

minimum area containing line

float lsd::KeyLine::sPointInOctaveX

line's extremes in image it was extracted from

float lsd::KeyLine::sPointInOctaveY

float lsd::KeyLine::startPointX

lines's extremes in original image

float lsd::KeyLine::startPointY