de.lmu.ifi.dbs.jfeaturelib.features.surf

Class InterestPoint

java.lang.Object

de.lmu.ifi.dbs.jfeaturelib.features.surf.InterestPoint

public class InterestPoint
extends Object

Interest Point class.

Field Summary

Fields

Modifier and Type	Field and Description
float[]	descriptor Vector of descriptor components.
float	orientation Orientation measured anti-clockwise from +ve x-axis.
float	scale Detected scale.
boolean	sign Sign of hessian traces (laplacian sign).
float	strength Value of the hessian determinant (blob response) means the strength of the interest point.
float	trace Trace of the hessian determinant.
float	x Interpolated X-coordinate.
float	y Interpolated Y-coordinate.

Constructor Summary

Constructors

Constructor and Description
InterestPoint()
InterestPoint(float x, float y, float strength, float trace, float scale)

Method Summary

Methods

Modifier and Type	Method and Description
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

x

public float x

Interpolated X-coordinate.

y

public float y

Interpolated Y-coordinate.

strength

public float strength

Value of the hessian determinant (blob response) means the strength of the interest point.

trace

public float trace

Trace of the hessian determinant.

sign

public boolean sign

Sign of hessian traces (laplacian sign).
true means >= 0, false means < 0. (Signs are saved separately for better matching performance.)

scale

public float scale

Detected scale.

orientation

public float orientation

Orientation measured anti-clockwise from +ve x-axis. The default is 0 (i.e. upright SURF).

descriptor

public float[] descriptor

Vector of descriptor components.

Constructor Detail

InterestPoint

public InterestPoint()

InterestPoint

public InterestPoint(float x,
             float y,
             float strength,
             float trace,
             float scale)

Method Detail

toString

public String toString()

Overrides:

toString in class Object