FastWaveletTransform
math.jwave.transforms

Class FastWaveletTransform



  • public class FastWaveletTransformextends WaveletTransform
    Base class for the forward and reverse Fast Wavelet Transform in 1-D, 2-D, and 3-D using a specified Wavelet by inheriting class.
    • Method Summary

      Methods 
      Modifier and TypeMethod and Description
      double[]forward(double[] arrTime)
      Performs the 1-D forward transform for arrays of dim N from time domain to Hilbert domain for the given array using the Fast Wavelet Transform (FWT) algorithm.
      double[]reverse(double[] arrHilb)
      Performs the 1-D reverse transform for arrays of dim N from Hilbert domain to time domain for the given array using the Fast Wavelet Transform (FWT) algorithm and the selected wavelet.
    • Constructor Detail

      • FastWaveletTransform

        public FastWaveletTransform(Wavelet wavelet)
        Constructor receiving a Wavelet object.
        Parameters:
        wavelet - object of type Wavelet; Haar02, Daub02, Coif06, ...
        Throws:
        JWaveException
      • FastWaveletTransform

        public FastWaveletTransform(Wavelet wavelet,                    int steps)
        Constructor receiving a Wavelet object.
        Parameters:
        wavelet - object of type Wavelet; Haar02, Daub02, Coif06, ...
        steps - how many steps the algorithm should perform
        Throws:
        JWaveException
    • Method Detail

      • forward

        public double[] forward(double[] arrTime)
        Performs the 1-D forward transform for arrays of dim N from time domain to Hilbert domain for the given array using the Fast Wavelet Transform (FWT) algorithm.
        Specified by:
        forward in class BasicTransform
        Parameters:
        arrTime - coefficients of 1-D time domain
        Returns:
        coefficients of 1-D frequency or Hilbert domain
        See Also:
        BasicTransform.forward(double[])
      • reverse

        public double[] reverse(double[] arrHilb)
        Performs the 1-D reverse transform for arrays of dim N from Hilbert domain to time domain for the given array using the Fast Wavelet Transform (FWT) algorithm and the selected wavelet.
        Specified by:
        reverse in class BasicTransform
        Parameters:
        arrHilb - coefficients of 1-D frequency or Hilbert domain
        Returns:
        coefficients of 1-D time domain
        See Also:
        BasicTransform.reverse(double[])

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