Package org.opencv.core

Class KeyPoint

java.lang.Object

org.opencv.core.KeyPoint

public class KeyPoint
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
float	angle	Computed orientation of the keypoint (-1 if not applicable).
int	class_id	Object ID, that can be used to cluster keypoints by an object they belong to.
int	octave	Octave (pyramid layer), from which the keypoint has been extracted.
Point	pt	Coordinates of the keypoint.
float	response	The response, by which the strongest keypoints have been selected.
float	size	Diameter of the useful keypoint adjacent area.

Constructor Summary

Constructors

Constructor	Description
KeyPoint()
KeyPoint(float x, float y, float _size)
KeyPoint(float x, float y, float _size, float _angle)
KeyPoint(float x, float y, float _size, float _angle, float _response)
KeyPoint(float x, float y, float _size, float _angle, float _response, int _octave)
KeyPoint(float x, float y, float _size, float _angle, float _response, int _octave, int _class_id)

Method Summary

Modifier and Type	Method	Description
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

pt

public Point pt

Coordinates of the keypoint.

size

public float size

Diameter of the useful keypoint adjacent area.

angle

public float angle

Computed orientation of the keypoint (-1 if not applicable).

response

public float response

The response, by which the strongest keypoints have been selected. Can be used for further sorting or subsampling.

octave

public int octave

Octave (pyramid layer), from which the keypoint has been extracted.

class_id

public int class_id

Object ID, that can be used to cluster keypoints by an object they belong to.

Constructor Details

KeyPoint

public KeyPoint(float x,
 float y,
 float _size,
 float _angle,
 float _response,
 int _octave,
 int _class_id)

KeyPoint

public KeyPoint()

KeyPoint

public KeyPoint(float x,
 float y,
 float _size,
 float _angle,
 float _response,
 int _octave)

KeyPoint

public KeyPoint(float x,
 float y,
 float _size,
 float _angle,
 float _response)

KeyPoint

public KeyPoint(float x,
 float y,
 float _size,
 float _angle)

KeyPoint

public KeyPoint(float x,
 float y,
 float _size)

Method Details

toString

public String toString()

Overrides:

toString in class Object