math.fourierTransforms.r2
Class FFT2dComplex

java.lang.Object
  math.fourierTransforms.r2.FFT2dComplex

public class FFT2dComplex
extends java.lang.Object

Constructor Summary

FFT2dComplex(java.awt.Image img)

Method Summary

void	center()
void	conjugate()
void	denormalize() Does the inverse of normalize
void	fft()
static java.awt.Image	filter(java.awt.Image img1, java.awt.Image img2)
void	flip()
java.awt.Image	getImage() Get the real part of the complex plane in red, green and blue, combine into an image.
float	getPeakRealValue()
java.awt.Image	getPsdImage()
java.awt.Image	getScaledImage()
static java.awt.Image	getScaledImage(FFT2dComplex f1)
java.awt.Image	getScaledImage(float sf)
void	ifft()
static void	main(java.lang.String[] args)
void	makeUnitary() Compute the peak values for the 3 color planes.
void	mult(FFT2dComplex f2) Multiply r,g,b in the complex frequency domain
void	normalize()
void	removeDCBias()
void	removeMean()
void	scale(float s)
static void	testAndDisplay(java.awt.Image image1, java.awt.Image image2)

Methods inherited from class java.lang.Object

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

Constructor Detail

FFT2dComplex

public FFT2dComplex(java.awt.Image img)

Method Detail

main

public static void main(java.lang.String[] args)

scale

public void scale(float s)

normalize

public void normalize()

center

public void center()

getImage

public java.awt.Image getImage()

Get the real part of the complex plane in red, green and blue, combine into an image. Scale pixels to the range from 0..255. If the pixels are not in that range, call makeUnitary

Returns:

java.awt.Image of real number plane

makeUnitary

public void makeUnitary()

Compute the peak values for the 3 color planes. Select the max peak value and scale the color planes by 1/max.

filter

public static java.awt.Image filter(java.awt.Image img1,
                                    java.awt.Image img2)

testAndDisplay

public static void testAndDisplay(java.awt.Image image1,
                                  java.awt.Image image2)

getPsdImage

public java.awt.Image getPsdImage()

mult

public void mult(FFT2dComplex f2)

Multiply r,g,b in the complex frequency domain

Parameters:

f2 -

ifft

public void ifft()

fft

public void fft()

getPeakRealValue

public float getPeakRealValue()

denormalize

public void denormalize()

Does the inverse of normalize

getScaledImage

public java.awt.Image getScaledImage()

getScaledImage

public java.awt.Image getScaledImage(float sf)

getScaledImage

public static java.awt.Image getScaledImage(FFT2dComplex f1)

conjugate

public void conjugate()

flip

public void flip()

removeMean

public void removeMean()

removeDCBias

public void removeDCBias()