OpenCV 2.4.11

org.opencv.features2d

Class KeyPoint

    • Field Summary

      Fields 
      Modifier and Type Field and 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 and Description
      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

      Methods 
      Modifier and Type Method and Description
      java.lang.String toString() 
      • Methods inherited from class java.lang.Object

        equals, 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 cluster 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 strongest keypoints have been selected. Can be used for further sorting or subsampling.
      • size

        public float size
        Diameter of the useful keypoint adjacent area.
    • Constructor Detail

      • 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