math.complex
Class ComplexFloat1d

java.lang.Object
  math.complex.ComplexFloat1d

public class ComplexFloat1d
extends java.lang.Object

User: lyon Date: Nov 13, 2005 Time: 8:00:08 AM Copyright DocJava, Inc. 2005.

Field Summary

float[]	im
float[]	re

Constructor Summary

ComplexFloat1d()

ComplexFloat1d(float[] realPart, float[] imaginaryPart)

ComplexFloat1d(int n)

ComplexFloat1d(short[][] s)
Copy the s input into the real number plane and set the imaginary plane to zero.

Method Summary

void	center()
void	conjugate()
ComplexFloat1d	getCopy()
float[]	getIm()
float	getIm(int i)
int	getLength()
float	getMaxReal() Search the real part of the complex array
float	getMinReal() Search the real part of the complex array
float[]	getPSD()
static float[]	getPSD(float[] in_r, float[] in_i) Compute the power spectral density of the input arrays
float[]	getRe()
float	getRe(int i)
short[][]	getRealAs2dShort(int w, int h)
float	getRealSum()
float[]	logScaleMagnitude(float magScale)
static void	main(java.lang.String[] args)
void	minus(ComplexFloat1d b)
void	mult(ComplexFloat1d b)
void	normalize()
void	plus(ComplexFloat1d b)
void	print()
void	removeDcComponent()
void	scale(float sc)
void	scaleAndMask(short[][] r) Mask the image kernal with the real and imaginary numbers.
void	scaleIntoRange(float min, float max, int maxValueOuput)
void	setIm(float[] im)
void	setRe(float[] re)
void	setRe(short[] re)
void	swap(int i, int j)
void	swapInt(int i, int j)

Methods inherited from class java.lang.Object

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

Field Detail

re

public float[] re

im

public float[] im

Constructor Detail

ComplexFloat1d

public ComplexFloat1d()

ComplexFloat1d

public ComplexFloat1d(short[][] s)

Copy the s input into the real number plane and set the imaginary plane to zero.

Parameters:

s -

ComplexFloat1d

public ComplexFloat1d(int n)

ComplexFloat1d

public ComplexFloat1d(float[] realPart,
                      float[] imaginaryPart)

Method Detail

getRealAs2dShort

public short[][] getRealAs2dShort(int w,
                                  int h)

main

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

swapInt

public void swapInt(int i,
                    int j)

plus

public void plus(ComplexFloat1d b)

getCopy

public ComplexFloat1d getCopy()

scaleAndMask

public void scaleAndMask(short[][] r)

Mask the image kernal with the real and imaginary numbers. Assume the image kernal ranges from 0..255. Make it a unitary filter by dividing by 255.

Parameters:

r -

scale

public void scale(float sc)

mult

public void mult(ComplexFloat1d b)

minus

public void minus(ComplexFloat1d b)

logScaleMagnitude

public float[] logScaleMagnitude(float magScale)

getIm

public float[] getIm()

getIm

public float getIm(int i)

setIm

public void setIm(float[] im)

getRe

public float getRe(int i)

getRe

public float[] getRe()

getLength

public int getLength()

setRe

public void setRe(float[] re)

swap

public void swap(int i,
                 int j)

getPSD

public float[] getPSD()

getPSD

public static float[] getPSD(float[] in_r,
                             float[] in_i)

Compute the power spectral density of the input arrays

Parameters:

in_r - real part of an fft

in_i - imaginary part of an fft

Returns:

the psd.

center

public void center()

setRe

public void setRe(short[] re)

print

public void print()

normalize

public void normalize()

getMaxReal

public float getMaxReal()

Search the real part of the complex array

Returns:

the max value

getMinReal

public float getMinReal()

Search the real part of the complex array

Returns:

the min value

getRealSum

public float getRealSum()

conjugate

public void conjugate()

removeDcComponent

public void removeDcComponent()

scaleIntoRange

public void scaleIntoRange(float min,
                           float max,
                           int maxValueOuput)