Package org.opencv.xfeatures2d

Class PCTSignaturesSQFD

java.lang.Object

org.opencv.core.Algorithm

org.opencv.xfeatures2d.PCTSignaturesSQFD

public class PCTSignaturesSQFD
extends Algorithm

Class implementing Signature Quadratic Form Distance (SQFD). SEE: Christian Beecks, Merih Seran Uysal, Thomas Seidl. Signature quadratic form distance. In Proceedings of the ACM International Conference on Image and Video Retrieval, pages 438-445. ACM, 2010. CITE: BeecksUS10

Field Summary

Fields inherited from class org.opencv.core.Algorithm

nativeObj

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PCTSignaturesSQFD(long addr)

Method Summary

Modifier and Type	Method	Description
static PCTSignaturesSQFD	__fromPtr__(long addr)
float	computeQuadraticFormDistance(Mat _signature0, Mat _signature1)	Computes Signature Quadratic Form Distance of two signatures.
void	computeQuadraticFormDistances(Mat sourceSignature, List<Mat> imageSignatures, MatOfFloat distances)	Computes Signature Quadratic Form Distance between the reference signature and each of the other image signatures.
static PCTSignaturesSQFD	create()	Creates the algorithm instance using selected distance function, similarity function and similarity function parameter.
static PCTSignaturesSQFD	create(int distanceFunction)	Creates the algorithm instance using selected distance function, similarity function and similarity function parameter.
static PCTSignaturesSQFD	create(int distanceFunction, int similarityFunction)	Creates the algorithm instance using selected distance function, similarity function and similarity function parameter.
static PCTSignaturesSQFD	create(int distanceFunction, int similarityFunction, float similarityParameter)	Creates the algorithm instance using selected distance function, similarity function and similarity function parameter.
protected void	finalize()

Methods inherited from class org.opencv.core.Algorithm

clear, empty, getDefaultName, getNativeObjAddr, save

Methods inherited from class java.lang.Object

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

Constructor Detail

PCTSignaturesSQFD

protected PCTSignaturesSQFD(long addr)

Method Detail

__fromPtr__

public static PCTSignaturesSQFD __fromPtr__(long addr)

create

public static PCTSignaturesSQFD create(int distanceFunction,
                                       int similarityFunction,
                                       float similarityParameter)

Creates the algorithm instance using selected distance function, similarity function and similarity function parameter.

Parameters:

distanceFunction - Distance function selector. Default: L2 Available: L0_25, L0_5, L1, L2, L2SQUARED, L5, L_INFINITY

similarityFunction - Similarity function selector. Default: HEURISTIC Available: MINUS, GAUSSIAN, HEURISTIC

similarityParameter - Parameter of the similarity function.

Returns:

automatically generated

create

public static PCTSignaturesSQFD create(int distanceFunction,
                                       int similarityFunction)

Creates the algorithm instance using selected distance function, similarity function and similarity function parameter.

Parameters:

distanceFunction - Distance function selector. Default: L2 Available: L0_25, L0_5, L1, L2, L2SQUARED, L5, L_INFINITY

similarityFunction - Similarity function selector. Default: HEURISTIC Available: MINUS, GAUSSIAN, HEURISTIC

Returns:

automatically generated

create

public static PCTSignaturesSQFD create(int distanceFunction)

Creates the algorithm instance using selected distance function, similarity function and similarity function parameter.

Parameters:

distanceFunction - Distance function selector. Default: L2 Available: L0_25, L0_5, L1, L2, L2SQUARED, L5, L_INFINITY Available: MINUS, GAUSSIAN, HEURISTIC

Returns:

automatically generated

create

public static PCTSignaturesSQFD create()

Creates the algorithm instance using selected distance function, similarity function and similarity function parameter. Available: L0_25, L0_5, L1, L2, L2SQUARED, L5, L_INFINITY Available: MINUS, GAUSSIAN, HEURISTIC

Returns:

automatically generated

computeQuadraticFormDistance

public float computeQuadraticFormDistance(Mat _signature0,
                                          Mat _signature1)

Computes Signature Quadratic Form Distance of two signatures.

Parameters:

_signature0 - The first signature.

_signature1 - The second signature.

Returns:

automatically generated

computeQuadraticFormDistances

public void computeQuadraticFormDistances(Mat sourceSignature,
                                          List<Mat> imageSignatures,
                                          MatOfFloat distances)

Computes Signature Quadratic Form Distance between the reference signature and each of the other image signatures.

Parameters:

sourceSignature - The signature to measure distance of other signatures from.

imageSignatures - Vector of signatures to measure distance from the source signature.

distances - Output vector of measured distances.

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Algorithm

Throws:

Throwable