cv::ximgproc::EdgeDrawing Class Reference

Class implementing the ED (EdgeDrawing) [213], EDLines [4], EDPF [5] and EDCircles [6] algorithms. More...

#include <opencv2/ximgproc/edge_drawing.hpp>

Inheritance diagram for cv::ximgproc::EdgeDrawing:

Classes
struct	Params

Public Types
enum	GradientOperator {   PREWITT = 0,   SOBEL = 1,   SCHARR = 2,   LSD = 3 }

Public Member Functions
virtual	~EdgeDrawing ()
virtual void	detectEdges (InputArray src)=0
	Detects edges in a grayscale image and prepares them to detect lines and ellipses. More...
virtual void	detectEllipses (OutputArray ellipses)=0
	Detects circles and ellipses. More...
virtual void	detectLines (OutputArray lines)=0
	Detects lines. More...
virtual void	getEdgeImage (OutputArray dst)=0
	returns Edge Image prepared by detectEdges() function. More...
virtual void	getGradientImage (OutputArray dst)=0
	returns Gradient Image prepared by detectEdges() function. More...
virtual std::vector< std::vector< Point > >	getSegments ()=0
	Returns std::vector<std::vector<Point>> of detected edge segments, see detectEdges() More...
void	setParams (const EdgeDrawing::Params &parameters)
	sets parameters. More...
Public Member Functions inherited from cv::Algorithm
	Algorithm ()
virtual	~Algorithm ()
virtual void	clear ()
	Clears the algorithm state. More...
virtual bool	empty () const
	Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read. More...
virtual String	getDefaultName () const
virtual void	read (const FileNode &fn)
	Reads algorithm parameters from a file storage. More...
virtual void	save (const String &filename) const
virtual void	write (FileStorage &fs) const
	Stores algorithm parameters in a file storage. More...
void	write (FileStorage &fs, const String &name) const
void	write (const Ptr< FileStorage > &fs, const String &name=String()) const

Public Attributes
Params	params

Additional Inherited Members
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...
Protected Member Functions inherited from cv::Algorithm
void	writeFormat (FileStorage &fs) const

Detailed Description

Class implementing the ED (EdgeDrawing) [213], EDLines [4], EDPF [5] and EDCircles [6] algorithms.

Member Enumeration Documentation

GradientOperator

enum cv::ximgproc::EdgeDrawing::GradientOperator

Enumerator
PREWITT
SOBEL
SCHARR
LSD

Constructor & Destructor Documentation

~EdgeDrawing()

virtual cv::ximgproc::EdgeDrawing::~EdgeDrawing ( )

inlinevirtual

Member Function Documentation

detectEdges()

virtual void cv::ximgproc::EdgeDrawing::detectEdges ( InputArray  src )

pure virtual

Python:
	cv.ximgproc.EdgeDrawing.detectEdges(	src	) ->	None

Detects edges in a grayscale image and prepares them to detect lines and ellipses.

Parameters

src	8-bit, single-channel, grayscale input image.

Examples:

fld_lines.cpp.

detectEllipses()

virtual void cv::ximgproc::EdgeDrawing::detectEllipses ( OutputArray  ellipses )

pure virtual

Python:
	cv.ximgproc.EdgeDrawing.detectEllipses(	[, ellipses]	) ->	ellipses

Detects circles and ellipses.

Parameters

ellipses

output Vec<6d> contains center point and perimeter for circles, center point, axes and angle for ellipses.

Note

you should call detectEdges() before calling this function.

Examples:

fld_lines.cpp.

detectLines()

virtual void cv::ximgproc::EdgeDrawing::detectLines ( OutputArray  lines )

pure virtual

Python:
	cv.ximgproc.EdgeDrawing.detectLines(	[, lines]	) ->	lines

Detects lines.

Parameters

lines

output Vec<4f> contains the start point and the end point of detected lines.

Note

you should call detectEdges() before calling this function.

Examples:

fld_lines.cpp.

getEdgeImage()

virtual void cv::ximgproc::EdgeDrawing::getEdgeImage ( OutputArray  dst )

pure virtual

Python:
	cv.ximgproc.EdgeDrawing.getEdgeImage(	[, dst]	) ->	dst

returns Edge Image prepared by detectEdges() function.

Parameters

dst	returns 8-bit, single-channel output image.

getGradientImage()

virtual void cv::ximgproc::EdgeDrawing::getGradientImage ( OutputArray  dst )

pure virtual

Python:
	cv.ximgproc.EdgeDrawing.getGradientImage(	[, dst]	) ->	dst

returns Gradient Image prepared by detectEdges() function.

Parameters

dst	returns 16-bit, single-channel output image.

getSegments()

virtual std::vector<std::vector<Point> > cv::ximgproc::EdgeDrawing::getSegments ( )

pure virtual

Python:
	cv.ximgproc.EdgeDrawing.getSegments(		) ->	retval

Returns std::vector<std::vector<Point>> of detected edge segments, see detectEdges()

Examples:

fld_lines.cpp.

setParams()

void cv::ximgproc::EdgeDrawing::setParams

(

const EdgeDrawing::Params &

parameters

)

Python:
	cv.ximgproc.EdgeDrawing.setParams(	parameters	) ->	None

sets parameters.

this function is meant to be used for parameter setting in other languages than c++ like python.

Parameters

parameters

Member Data Documentation

params

Params cv::ximgproc::EdgeDrawing::params

Examples:

fld_lines.cpp.

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

• opencv2/ximgproc/edge_drawing.hpp