Package org.opencv.ximgproc

Class StructuredEdgeDetection

java.lang.Object

org.opencv.core.Algorithm

org.opencv.ximgproc.StructuredEdgeDetection

public class StructuredEdgeDetection
extends Algorithm

Class implementing edge detection algorithm from CITE: Dollar2013 :

Field Summary

Fields inherited from class org.opencv.core.Algorithm

nativeObj

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	StructuredEdgeDetection(long addr)

Method Summary

Modifier and Type	Method	Description
static StructuredEdgeDetection	__fromPtr__(long addr)
void	computeOrientation(Mat _src, Mat _dst)	The function computes orientation from edge image.
void	detectEdges(Mat _src, Mat _dst)	The function detects edges in src and draw them to dst.
void	edgesNms(Mat edge_image, Mat orientation_image, Mat _dst)	The function edgenms in edge image and suppress edges where edge is stronger in orthogonal direction.
void	edgesNms(Mat edge_image, Mat orientation_image, Mat _dst, int r)	The function edgenms in edge image and suppress edges where edge is stronger in orthogonal direction.
void	edgesNms(Mat edge_image, Mat orientation_image, Mat _dst, int r, int s)	The function edgenms in edge image and suppress edges where edge is stronger in orthogonal direction.
void	edgesNms(Mat edge_image, Mat orientation_image, Mat _dst, int r, int s, float m)	The function edgenms in edge image and suppress edges where edge is stronger in orthogonal direction.
void	edgesNms(Mat edge_image, Mat orientation_image, Mat _dst, int r, int s, float m, boolean isParallel)	The function edgenms in edge image and suppress edges where edge is stronger in orthogonal direction.
protected void	finalize()

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

Constructor Detail

StructuredEdgeDetection

protected StructuredEdgeDetection(long addr)

Method Detail

__fromPtr__

public static StructuredEdgeDetection __fromPtr__(long addr)

detectEdges

public void detectEdges(Mat _src,
                        Mat _dst)

The function detects edges in src and draw them to dst. The algorithm underlies this function is much more robust to texture presence, than common approaches, e.g. Sobel

Parameters:

_src - source image (RGB, float, in [0;1]) to detect edges

_dst - destination image (grayscale, float, in [0;1]) where edges are drawn SEE: Sobel, Canny

computeOrientation

public void computeOrientation(Mat _src,
                               Mat _dst)

The function computes orientation from edge image.

Parameters:

_src - edge image.

_dst - orientation image.

edgesNms

public void edgesNms(Mat edge_image,
                     Mat orientation_image,
                     Mat _dst,
                     int r,
                     int s,
                     float m,
                     boolean isParallel)

The function edgenms in edge image and suppress edges where edge is stronger in orthogonal direction.

Parameters:

edge_image - edge image from detectEdges function.

orientation_image - orientation image from computeOrientation function.

_dst - suppressed image (grayscale, float, in [0;1])

r - radius for NMS suppression.

s - radius for boundary suppression.

m - multiplier for conservative suppression.

isParallel - enables/disables parallel computing.

edgesNms

public void edgesNms(Mat edge_image,
                     Mat orientation_image,
                     Mat _dst,
                     int r,
                     int s,
                     float m)

The function edgenms in edge image and suppress edges where edge is stronger in orthogonal direction.

Parameters:

edge_image - edge image from detectEdges function.

orientation_image - orientation image from computeOrientation function.

_dst - suppressed image (grayscale, float, in [0;1])

r - radius for NMS suppression.

s - radius for boundary suppression.

m - multiplier for conservative suppression.

edgesNms

public void edgesNms(Mat edge_image,
                     Mat orientation_image,
                     Mat _dst,
                     int r,
                     int s)

The function edgenms in edge image and suppress edges where edge is stronger in orthogonal direction.

Parameters:

edge_image - edge image from detectEdges function.

orientation_image - orientation image from computeOrientation function.

_dst - suppressed image (grayscale, float, in [0;1])

r - radius for NMS suppression.

s - radius for boundary suppression.

edgesNms

public void edgesNms(Mat edge_image,
                     Mat orientation_image,
                     Mat _dst,
                     int r)

The function edgenms in edge image and suppress edges where edge is stronger in orthogonal direction.

Parameters:

edge_image - edge image from detectEdges function.

orientation_image - orientation image from computeOrientation function.

_dst - suppressed image (grayscale, float, in [0;1])

r - radius for NMS suppression.

edgesNms

public void edgesNms(Mat edge_image,
                     Mat orientation_image,
                     Mat _dst)

The function edgenms in edge image and suppress edges where edge is stronger in orthogonal direction.

Parameters:

edge_image - edge image from detectEdges function.

orientation_image - orientation image from computeOrientation function.

_dst - suppressed image (grayscale, float, in [0;1])

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Algorithm

Throws:

Throwable