com.alee.graphics.filters

Class GaussianFilter

java.lang.Object

com.alee.graphics.filters.AbstractBufferedImageOp

com.alee.graphics.filters.ConvolveFilter

com.alee.graphics.filters.GaussianFilter

All Implemented Interfaces:

BufferedImageOp

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 Kernel	kernel
protected float	radius

Fields inherited from class com.alee.graphics.filters.ConvolveFilter

alpha, CLAMP_EDGES, WRAP_EDGES, ZERO_EDGES

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
static void	convolveAndTranspose(Kernel kernel, int[] inPixels, int[] outPixels, int width, int height, boolean alpha, int edgeAction)
BufferedImage	filter(BufferedImage src, BufferedImage dst)
float	getRadius() Get the radius of the kernel.
static Kernel	makeKernel(float radius) Make a Gaussian blur kernel.
void	setRadius(float radius) Set the radius of the kernel, and hence the amount of blur.

Methods inherited from class com.alee.graphics.filters.ConvolveFilter

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

Methods inherited from class com.alee.graphics.filters.AbstractBufferedImageOp

getRGB, setRGB

Methods inherited from class java.lang.Object

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

Field Detail

radius

protected float radius

kernel

protected Kernel kernel

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 BufferedImage filter(BufferedImage src,
                            BufferedImage dst)

Specified by:

filter in interface BufferedImageOp

Overrides:

filter in class ConvolveFilter

convolveAndTranspose

public static void convolveAndTranspose(Kernel kernel,
                                        int[] inPixels,
                                        int[] outPixels,
                                        int width,
                                        int height,
                                        boolean alpha,
                                        int edgeAction)

makeKernel

public static Kernel makeKernel(float radius)

Make a Gaussian blur kernel.