Package org.opencv.xfeatures2d

Class VGG

java.lang.Object

org.opencv.core.Algorithm

org.opencv.features.Feature2D

org.opencv.xfeatures2d.VGG

public class VGG
extends Feature2D

Class implementing VGG (Oxford Visual Geometry Group) descriptor trained end to end using "Descriptor Learning Using Convex Optimisation" (DLCO) aparatus described in CITE: Simonyan14. desc type of descriptor to use, VGG::VGG_120 is default (120 dimensions float) Available types are VGG::VGG_120, VGG::VGG_80, VGG::VGG_64, VGG::VGG_48 isigma gaussian kernel value for image blur (default is 1.4f) img_normalize use image sample intensity normalization (enabled by default) use_orientation sample patterns using keypoints orientation, enabled by default scale_factor adjust the sampling window of detected keypoints to 64.0f (VGG sampling window) 6.25f is default and fits for KAZE, SURF detected keypoints window ratio 6.75f should be the scale for SIFT detected keypoints window ratio 5.00f should be the scale for AKAZE, MSD, AGAST, FAST, BRISK keypoints window ratio 0.75f should be the scale for ORB keypoints ratio dsc_normalize clamp descriptors to 255 and convert to uchar CV_8UC1 (disabled by default)

Field Summary

Fields inherited from class org.opencv.core.Algorithm

nativeObj

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	VGG(long addr)

Method Summary

Modifier and Type	Method	Description
static VGG	__fromPtr__(long addr)
static VGG	create()
static VGG	create(int desc)
static VGG	create(int desc, float isigma)
static VGG	create(int desc, float isigma, boolean img_normalize)
static VGG	create(int desc, float isigma, boolean img_normalize, boolean use_scale_orientation)
static VGG	create(int desc, float isigma, boolean img_normalize, boolean use_scale_orientation, float scale_factor)
static VGG	create(int desc, float isigma, boolean img_normalize, boolean use_scale_orientation, float scale_factor, boolean dsc_normalize)
protected void	finalize()
java.lang.String	getDefaultName()	Returns the algorithm string identifier.
float	getScaleFactor()
float	getSigma()
boolean	getUseNormalizeDescriptor()
boolean	getUseNormalizeImage()
boolean	getUseScaleOrientation()
void	setScaleFactor(float scale_factor)
void	setSigma(float isigma)
void	setUseNormalizeDescriptor(boolean dsc_normalize)
void	setUseNormalizeImage(boolean img_normalize)
void	setUseScaleOrientation(boolean use_scale_orientation)

Methods inherited from class org.opencv.features.Feature2D

compute, compute, defaultNorm, descriptorSize, descriptorType, detect, detect, detect, detect, detectAndCompute, detectAndCompute, empty, read, write

Methods inherited from class org.opencv.core.Algorithm

clear, getNativeObjAddr, save

Methods inherited from class java.lang.Object

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

Constructor Detail

VGG

protected VGG(long addr)

Method Detail

__fromPtr__

public static VGG __fromPtr__(long addr)

create

public static VGG create(int desc,
                         float isigma,
                         boolean img_normalize,
                         boolean use_scale_orientation,
                         float scale_factor,
                         boolean dsc_normalize)

create

public static VGG create(int desc,
                         float isigma,
                         boolean img_normalize,
                         boolean use_scale_orientation,
                         float scale_factor)

create

public static VGG create(int desc,
                         float isigma,
                         boolean img_normalize,
                         boolean use_scale_orientation)

create

public static VGG create(int desc,
                         float isigma,
                         boolean img_normalize)

create

public static VGG create(int desc,
                         float isigma)

create

public static VGG create(int desc)

create

public static VGG create()

getDefaultName

public java.lang.String getDefaultName()

Description copied from class: Algorithm

Returns the algorithm string identifier. This string is used as top level xml/yml node tag when the object is saved to a file or string.

Overrides:

getDefaultName in class Feature2D

Returns:

automatically generated

setSigma

public void setSigma(float isigma)

getSigma

public float getSigma()

setUseNormalizeImage

public void setUseNormalizeImage(boolean img_normalize)

getUseNormalizeImage

public boolean getUseNormalizeImage()

setUseScaleOrientation

public void setUseScaleOrientation(boolean use_scale_orientation)

getUseScaleOrientation

public boolean getUseScaleOrientation()

setScaleFactor

public void setScaleFactor(float scale_factor)

getScaleFactor

public float getScaleFactor()

setUseNormalizeDescriptor

public void setUseNormalizeDescriptor(boolean dsc_normalize)

getUseNormalizeDescriptor

public boolean getUseNormalizeDescriptor()

finalize

protected void finalize()
                 throws java.lang.Throwable

Overrides:

finalize in class Feature2D

Throws:

java.lang.Throwable