cn.apiclub.captcha.filter.image

类 GaussianFilter

java.lang.Object

cn.apiclub.captcha.filter.image.AbstractBufferedImageOp

cn.apiclub.captcha.filter.image.ConvolveFilter

cn.apiclub.captcha.filter.image.GaussianFilter

所有已实现的接口:

BufferedImageOp, Cloneable

直接已知子类:

GlowFilter, HighPassFilter, 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.

作者:

Jerry Huxtable

字段概要

字段

限定符和类型	字段和说明
protected Kernel	kernel The convolution kernel.
protected float	radius The blur radius.

从类继承的字段 cn.apiclub.captcha.filter.image.ConvolveFilter

alpha, CLAMP_EDGES, premultiplyAlpha, WRAP_EDGES, ZERO_EDGES

构造器概要

构造器

构造器和说明
GaussianFilter() Construct a Gaussian filter.
GaussianFilter(float radius) Construct a Gaussian filter.

方法概要

方法

限定符和类型	方法和说明
static void	convolveAndTranspose(Kernel kernel, int[] inPixels, int[] outPixels, int width, int height, boolean alpha, boolean premultiply, boolean unpremultiply, int edgeAction) Blur and transpose a block of ARGB pixels.
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.
String	toString()

从类继承的方法 cn.apiclub.captcha.filter.image.ConvolveFilter

convolve, convolve, convolveH, convolveHV, convolveV, createCompatibleDestImage, getBounds2D, getEdgeAction, getKernel, getPoint2D, getPremultiplyAlpha, getRenderingHints, getUseAlpha, setEdgeAction, setKernel, setPremultiplyAlpha, setUseAlpha

从类继承的方法 cn.apiclub.captcha.filter.image.AbstractBufferedImageOp

clone, getRGB, setRGB

从类继承的方法 java.lang.Object

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

字段详细资料

radius

protected float radius

The blur radius.

kernel

protected Kernel kernel

The convolution kernel.

构造器详细资料

GaussianFilter

public GaussianFilter()

Construct a Gaussian filter.

GaussianFilter

public GaussianFilter(float radius)

Construct a Gaussian filter.

参数:

radius - blur radius in pixels

方法详细资料

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.

参数:

radius - the radius of the blur in pixels.

另请参阅:

getRadius()

getRadius

public float getRadius()

Get the radius of the kernel.

返回:

the radius

另请参阅:

setRadius(float)

filter

public BufferedImage filter(BufferedImage src,
                   BufferedImage dst)

指定者:

filter 在接口中 BufferedImageOp

覆盖:

filter 在类中 ConvolveFilter

convolveAndTranspose

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

Blur and transpose a block of ARGB pixels.

参数:

kernel - the blur kernel

inPixels - the input pixels

outPixels - the output pixels

width - the width of the pixel array

height - the height of the pixel array

alpha - whether to blur the alpha channel

edgeAction - what to do at the edges

makeKernel

public static Kernel makeKernel(float radius)

Make a Gaussian blur kernel.

参数:

radius - the blur radius

返回:

the kernel

toString

public String toString()

覆盖:

toString 在类中 ConvolveFilter