denoise
Class FFT1D

java.lang.Object
  denoise.FFT1D

public final class FFT1D
extends java.lang.Object

Plugin of ImageJ:
Fractional Spline Wavelet

Authors:
Gil Gaillard, Michael Liebling, Daniel Sage, Dimitri Van De Ville Swiss Federal Institute of Technology Lausanne, Biomedical Imaging Group, CH-1015 Lausanne, Switzerland, http://bigwww.epfl.ch

Version:
April 2003

Copyright
Copyright (c) 2003, Swiss Federal Institute of Technology, Lausanne, Switzerland, (EPFL)

Purpose of the class:
Perform a 1D FFT.

Constructor Summary

protected

FFT1D(int size)

Method Summary

protected void	inverse(double[] Re, double[] Im, int size, int shift) Select the algorithm to perform the Inverse FFT1D, Cooley-Tukey or Mix.
protected void	transform(double[] Re, double[] Im, int size, int shift) Select the algorithm to perform the FFT1D, Cooley-Tukey or Mix.

Methods inherited from class java.lang.Object

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

Constructor Detail

FFT1D

protected FFT1D(int size)

Method Detail

transform

protected final void transform(double[] Re,
                               double[] Im,
                               int size,
                               int shift)

Select the algorithm to perform the FFT1D, Cooley-Tukey or Mix.

Parameters:

Re - real part of the input signal

Im - imaginary part of the input signal

size - length of the FFT

shift - set the start of the FFT

inverse

protected final void inverse(double[] Re,
                             double[] Im,
                             int size,
                             int shift)

Select the algorithm to perform the Inverse FFT1D, Cooley-Tukey or Mix.

Parameters:

Re - real part of the input signal

Im - imaginary part of the input signal

size - length of the IFFT

shift - set the start of the IFFT