org.opencv.features2d
Class KeyPoint

java.lang.Object
  org.opencv.features2d.KeyPoint

public class KeyPoint
extends java.lang.Object

Data structure for salient point detectors.

See Also:

org.opencv.features2d.KeyPoint

Field Summary

float	angle computed orientation of the keypoint (-1 if not applicable)
int	class_id object id that can be used to clustered 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 most strong keypoints have been selected.
float	size diameter of the meaningful keypoint neighborhood

Constructor Summary

KeyPoint()
The keypoint constructors

KeyPoint(float x, float y, float _size)
The keypoint constructors

KeyPoint(float x, float y, float _size, float _angle)
The keypoint constructors

KeyPoint(float x, float y, float _size, float _angle, float _response)
The keypoint constructors

KeyPoint(float x, float y, float _size, float _angle, float _response, int _octave)
The keypoint constructors

KeyPoint(float x, float y, float _size, float _angle, float _response, int _octave, int _class_id)
The keypoint constructors

Method Summary

java.lang.String

toString()

Methods inherited from class java.lang.Object

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

Field Detail

angle

public float angle

computed orientation of the keypoint (-1 if not applicable)

class_id

public int class_id

object id that can be used to clustered keypoints by an object they belong to

octave

public int octave

octave (pyramid layer) from which the keypoint has been extracted

pt

public Point pt

coordinates of the keypoint

response

public float response

the response by which the most strong keypoints have been selected. Can be used for further sorting or subsampling

size

public float size

diameter of the meaningful keypoint neighborhood

Constructor Detail

KeyPoint

public KeyPoint()

The keypoint constructors

See Also:

org.opencv.features2d.KeyPoint.KeyPoint

KeyPoint

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

The keypoint constructors

Parameters:

x - x-coordinate of the keypoint

y - y-coordinate of the keypoint

_size - keypoint diameter

See Also:

org.opencv.features2d.KeyPoint.KeyPoint

KeyPoint

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

The keypoint constructors

Parameters:

x - x-coordinate of the keypoint

y - y-coordinate of the keypoint

_size - keypoint diameter

_angle - keypoint orientation

See Also:

org.opencv.features2d.KeyPoint.KeyPoint

KeyPoint

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

The keypoint constructors

Parameters:

x - x-coordinate of the keypoint

y - y-coordinate of the keypoint

_size - keypoint diameter

_angle - keypoint orientation

_response - keypoint detector response on the keypoint (that is, strength of the keypoint)

See Also:

org.opencv.features2d.KeyPoint.KeyPoint

KeyPoint

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

The keypoint constructors

Parameters:

x - x-coordinate of the keypoint

y - y-coordinate of the keypoint

_size - keypoint diameter

_angle - keypoint orientation

_response - keypoint detector response on the keypoint (that is, strength of the keypoint)

_octave - pyramid octave in which the keypoint has been detected

See Also:

org.opencv.features2d.KeyPoint.KeyPoint

KeyPoint

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

The keypoint constructors

Parameters:

x - x-coordinate of the keypoint

y - y-coordinate of the keypoint

_size - keypoint diameter

_angle - keypoint orientation

_response - keypoint detector response on the keypoint (that is, strength of the keypoint)

_octave - pyramid octave in which the keypoint has been detected

_class_id - object id

See Also:

org.opencv.features2d.KeyPoint.KeyPoint

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object