com.jhlabs.image
Class GaussianFilter

java.lang.Object
  com.jhlabs.image.AbstractBufferedImageOp
      com.jhlabs.image.ConvolveFilter
          com.jhlabs.image.GaussianFilter

All Implemented Interfaces:

java.awt.image.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 inherited from class com.jhlabs.image.ConvolveFilter

CLAMP_EDGES, WRAP_EDGES, ZERO_EDGES

Constructor Summary

GaussianFilter()
Construct a Gaussian filter.

GaussianFilter(float radius)
Construct a Gaussian filter.

Method Summary

static void	convolveAndTranspose(java.awt.image.Kernel kernel, int[] inPixels, int[] outPixels, int width, int height, boolean alpha, int edgeAction)
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.
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.jhlabs.image.ConvolveFilter

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

Methods inherited from class com.jhlabs.image.AbstractBufferedImageOp

getRGB, setRGB

Methods inherited from class java.lang.Object

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

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

convolveAndTranspose

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

makeKernel

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

Make a Gaussian blur kernel.

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

toString

public java.lang.String toString()

Overrides:

toString in class ConvolveFilter