Class GaussianBlurFilter

java.lang.Object

org.jdesktop.beans.AbstractBean

org.jdesktop.swingx.image.AbstractFilter

org.jdesktop.swingx.image.GaussianBlurFilter

All Implemented Interfaces:

BufferedImageOp

public class GaussianBlurFilter
extends AbstractFilter

Field Summary

Fields

Modifier and Type	Field	Description
private final int	radius

Constructor Summary

Constructors

Constructor	Description
GaussianBlurFilter()	Creates a new blur filter with a default radius of 3.
GaussianBlurFilter(int radius)	Creates a new blur filter with the specified radius.

Method Summary

Modifier and Type	Method	Description
(package private) static void	blur(int[] srcPixels, int[] dstPixels, int width, int height, float[] kernel, int radius)	Blurs the source pixels into the destination pixels.
(package private) static float[]	createGaussianKernel(int radius)
BufferedImage	filter(BufferedImage src, BufferedImage dst)
int	getRadius()	Returns the radius used by this filter, in pixels.

Methods inherited from class AbstractFilter

createCompatibleDestImage, getBounds2D, getPoint2D, getRenderingHints

Methods inherited from class AbstractBean

addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, addVetoableChangeListener, clone, fireIndexedPropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, fireVetoableChange, getPropertyChangeListeners, getPropertyChangeListeners, getVetoableChangeListeners, getVetoableChangeListeners, hasPropertyChangeListeners, hasVetoableChangeListeners, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, removeVetoableChangeListener

Methods inherited from class Object

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

Field Details

radius

private final int radius

Constructor Details

GaussianBlurFilter

public GaussianBlurFilter()

Creates a new blur filter with a default radius of 3.

GaussianBlurFilter

public GaussianBlurFilter(int radius)

Creates a new blur filter with the specified radius. If the radius is lower than 1, a radius of 1 will be used automatically.

Parameters:

radius - the radius, in pixels, of the blur

Method Details

getRadius

public int getRadius()

Returns the radius used by this filter, in pixels.

Returns:

the radius of the blur

filter

public BufferedImage filter(BufferedImage src,
 BufferedImage dst)

Specified by:

filter in interface BufferedImageOp

Specified by:

filter in class AbstractFilter

blur

static void blur(int[] srcPixels,
 int[] dstPixels,
 int width,
 int height,
 float[] kernel,
 int radius)

Blurs the source pixels into the destination pixels. The force of the blur is specified by the radius which must be greater than 0.

The source and destination pixels arrays are expected to be in the INT_ARGB format.

After this method is executed, dstPixels contains a transposed and filtered copy of srcPixels.

Parameters:

srcPixels - the source pixels

dstPixels - the destination pixels

width - the width of the source picture

height - the height of the source picture

kernel - the kernel of the blur effect

radius - the radius of the blur effect

createGaussianKernel

static float[] createGaussianKernel(int radius)