com.alkacon.simapi.filter.buffered

Class GaussianFilter

java.lang.Object

com.alkacon.simapi.filter.buffered.AbstractBufferedImageOp

com.alkacon.simapi.filter.buffered.ConvolveFilter

com.alkacon.simapi.filter.buffered.GaussianFilter

All Implemented Interfaces:

java.awt.image.BufferedImageOp

Direct Known Subclasses:

UnsharpFilter

public class GaussianFilter
extends ConvolveFilter

A filter which applies Gaussian blur to an image. This is a subclass of ConvolveFilter which simply creates a kernel with a Gaussian distribution for blurring.

Author:

Jerry Huxtable

Field Summary

Fields

Modifier and Type	Field and Description
protected java.awt.image.Kernel[]	kernels
protected float	radius

Fields inherited from class com.alkacon.simapi.filter.buffered.ConvolveFilter

alpha, CLAMP_EDGES, kernel, WRAP_EDGES, ZERO_EDGES

Constructor Summary

Constructors

Constructor and Description
GaussianFilter() Construct a Gaussian filter
GaussianFilter(float radius) Construct a Gaussian filter

Method Summary

Methods

Modifier and Type	Method and Description
java.awt.image.BufferedImage	filter(java.awt.image.BufferedImage src, java.awt.image.BufferedImage dst)
float	getRadius() Get the radius of the kernel.
static java.awt.image.Kernel	makeKernel(float radius) Make a Gaussian blur kernel.
static java.awt.image.Kernel[]	separatedKernels(float radius)
void	setRadius(float radius) Set the radius of the kernel, and hence the amount of blur.
java.lang.String	toString()

Methods inherited from class com.alkacon.simapi.filter.buffered.ConvolveFilter

convolve, convolve, convolveH, convolveHV, convolveV, createCompatibleDestImage, getBounds2D, getEdgeAction, getKernel, getPoint2D, getRenderingHints, setEdgeAction, setKernel

Methods inherited from class com.alkacon.simapi.filter.buffered.AbstractBufferedImageOp

getRGB, setRGB

Methods inherited from class java.lang.Object

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

Field Detail

radius

protected float radius

kernels

protected java.awt.image.Kernel[] kernels

Constructor Detail

GaussianFilter

public GaussianFilter()

Construct a Gaussian filter

GaussianFilter

public GaussianFilter(float radius)

Construct a Gaussian filter

Parameters:

radius - blur radius in pixels

Method Detail

setRadius

public void setRadius(float radius)

Set the radius of the kernel, and hence the amount of blur. The bigger the radius, the longer this filter will take.

Parameters:

radius - the radius of the blur in pixels.

getRadius

public float getRadius()

Get the radius of the kernel.

Returns:

the radius

filter

public java.awt.image.BufferedImage filter(java.awt.image.BufferedImage src,
                                  java.awt.image.BufferedImage dst)

Specified by:

filter in interface java.awt.image.BufferedImageOp

Overrides:

filter in class ConvolveFilter

makeKernel

public static java.awt.image.Kernel makeKernel(float radius)

Make a Gaussian blur kernel. Don't use this: make separated kernels instead.

separatedKernels

public static java.awt.image.Kernel[] separatedKernels(float radius)

toString

public java.lang.String toString()

Overrides:

toString in class ConvolveFilter