KeyPoint Structure

Data structure for salient point detectors

Namespace: OpenCvSharp
Assembly: OpenCvSharp (in OpenCvSharp.dll) Version: 3.4.1.20180605-33-CaRLSharp

Syntax

[SerializableAttribute]
public struct KeyPoint : IEquatable<KeyPoint>

<SerializableAttribute>
Public Structure KeyPoint
	Implements IEquatable(Of KeyPoint)

[SerializableAttribute]
public value class KeyPoint : IEquatable<KeyPoint>

[<SealedAttribute>]
[<SerializableAttribute>]
type KeyPoint =  
    struct
        interface IEquatable<KeyPoint>
    end

JavaScript supports the use of structures, but not the declaration of new ones.

The KeyPoint type exposes the following members.

Constructors

	Name	Description
	KeyPoint(Point2f, Single, Single, Single, Int32, Int32)	Complete constructor
	KeyPoint(Single, Single, Single, Single, Single, Int32, Int32)	Complete constructor

Methods

	Name	Description
	Equals(Object)	Specifies whether this object contains the same members as the specified Object. (Overrides ValueTypeEquals(Object).)
	Equals(KeyPoint)	Specifies whether this object contains the same members as the specified Object.
	GetHashCode	Returns a hash code for this object. (Overrides ValueTypeGetHashCode.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	ToString	Converts this object to a human readable string. (Overrides ValueTypeToString.)

Operators

	Name	Description
	Equality	Compares two CvPoint objects. The result specifies whether the members of each object are equal.
	Inequality	Compares two CvPoint objects. The result specifies whether the members of each object are unequal.

Fields

	Name	Description
	Angle	Feature orientation in degrees (has negative value if the orientation is not defined/not computed)
	ClassId	Point class (can be used by feature classifiers or object detectors)
	Octave	Scale-space octave in which the feature has been found; may correlate with the size
	Pt	Coordinate of the point
	Response	Feature strength (can be used to select only the most prominent key points)
	Size	Feature size