org.opencv.ximgproc

Class EdgeDrawing

java.lang.Object

org.opencv.core.Algorithm

org.opencv.ximgproc.EdgeDrawing

public class EdgeDrawing
extends Algorithm

Class implementing the ED (EdgeDrawing) CITE: topal2012edge, EDLines CITE: akinlar2011edlines, EDPF CITE: akinlar2012edpf and EDCircles CITE: akinlar2013edcircles algorithms

Field Summary

Fields

Modifier and Type	Field and Description
static int	LSD
static int	PREWITT
static int	SCHARR
static int	SOBEL

Fields inherited from class org.opencv.core.Algorithm

nativeObj

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EdgeDrawing(long addr)

Method Summary

Modifier and Type	Method and Description
static EdgeDrawing	__fromPtr__(long addr)
void	detectEdges(Mat src) Detects edges in a grayscale image and prepares them to detect lines and ellipses.
void	detectEllipses(Mat ellipses) Detects circles and ellipses.
void	detectLines(Mat lines) Detects lines.
protected void	finalize()
void	getEdgeImage(Mat dst) returns Edge Image prepared by detectEdges() function.
void	getGradientImage(Mat dst) returns Gradient Image prepared by detectEdges() function.
MatOfInt	getSegmentIndicesOfLines() Returns for each line found in detectLines() its edge segment index in getSegments()
List<MatOfPoint>	getSegments() Returns std::vector<std::vector<Point>> of detected edge segments, see detectEdges()
void	setParams(EdgeDrawing_Params parameters) sets parameters.

Methods inherited from class org.opencv.core.Algorithm

clear, empty, getDefaultName, getNativeObjAddr, save

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PREWITT

public static final int PREWITT

See Also:

Constant Field Values

SOBEL

public static final int SOBEL

See Also:

Constant Field Values

SCHARR

public static final int SCHARR

See Also:

Constant Field Values

LSD

public static final int LSD

See Also:

Constant Field Values

Constructor Detail

EdgeDrawing

protected EdgeDrawing(long addr)

Method Detail

__fromPtr__

public static EdgeDrawing __fromPtr__(long addr)

detectEdges

public void detectEdges(Mat src)

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

Parameters:

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

getEdgeImage

public void getEdgeImage(Mat dst)

returns Edge Image prepared by detectEdges() function.

Parameters:

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

getGradientImage

public void getGradientImage(Mat dst)

returns Gradient Image prepared by detectEdges() function.

Parameters:

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

getSegments

public List<MatOfPoint> getSegments()

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

Returns:

automatically generated

getSegmentIndicesOfLines

public MatOfInt getSegmentIndicesOfLines()

Returns for each line found in detectLines() its edge segment index in getSegments()

Returns:

automatically generated

detectLines

public void detectLines(Mat 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.

detectEllipses

public void detectEllipses(Mat 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.

setParams

public void setParams(EdgeDrawing_Params parameters)

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

Parameters:

parameters -

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Algorithm

Throws:

Throwable