Class ConvolutionTest

java.lang.Object
  |
  +--ConvolutionTest

public class ConvolutionTest

extends java.lang.Object

Inner Class Summary

static class

ConvolutionTest.MyImageCanvas

Field Summary

int	filterSize
static double	oneOverTwoPi
int	scaledSize
double	sigma
int	thumbSize

Constructor Summary

ConvolutionTest(java.lang.String fileName, int filterSize, double sigma)

Method Summary

static javax.media.jai.RenderedOp	convolveWithGaussian(javax.media.jai.RenderedOp img, int size, double sigma)
static javax.media.jai.RenderedOp	downSize(javax.media.jai.RenderedOp in, int xSize, int ySize)
static double	gaussian(double x, double y, double sigma) evaluate a gaussian function at x.
static float[]	gaussianFilter(int size, double sigma) create a gaussian filter of the specified width
static void	main(java.lang.String[] args)
void	reconvolve()
void	setFilterSize(int filterSize)
void	setSigma(double sigma)

Methods inherited from class java.lang.Object

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

Field Detail

filterSize

public int filterSize

sigma

public double sigma

thumbSize

public int thumbSize

scaledSize

public int scaledSize

oneOverTwoPi

public static final double oneOverTwoPi

Constructor Detail

ConvolutionTest

public ConvolutionTest(java.lang.String fileName,
                       int filterSize,
                       double sigma)

Method Detail

setFilterSize

public void setFilterSize(int filterSize)

setSigma

public void setSigma(double sigma)

reconvolve

public void reconvolve()

downSize

public static javax.media.jai.RenderedOp downSize(javax.media.jai.RenderedOp in,
                                                  int xSize,
                                                  int ySize)

convolveWithGaussian

public static javax.media.jai.RenderedOp convolveWithGaussian(javax.media.jai.RenderedOp img,
                                                              int size,
                                                              double sigma)

gaussian

public static double gaussian(double x,
                              double y,
                              double sigma)

evaluate a gaussian function at x. sigma is a scaling parameter. if sigma==1 then the integral of the gaussian is 1 ???

gaussianFilter

public static float[] gaussianFilter(int size,
                                     double sigma)

create a gaussian filter of the specified width

main

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