Package org.opencv.xfeatures2d

Class 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

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      protected PCTSignaturesSQFD​(long addr)  

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      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, java.util.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 java.lang.Object

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

    • Constructor Detail

      • PCTSignaturesSQFD

        protected PCTSignaturesSQFD​(long addr)

    • Method Detail

      • 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,
                                          java.util.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 java.lang.Throwable
        Overrides:
        finalize in class Algorithm
        Throws:
        java.lang.Throwable