cn.apiclub.captcha.filter.image

类 ContrastFilter

java.lang.Object

cn.apiclub.captcha.filter.image.AbstractBufferedImageOp

cn.apiclub.captcha.filter.image.PointFilter

cn.apiclub.captcha.filter.image.TransferFilter

cn.apiclub.captcha.filter.image.ContrastFilter

所有已实现的接口:

BufferedImageOp, Cloneable

public class ContrastFilter
extends TransferFilter

A filter to change the brightness and contrast of an image.

字段概要

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

bTable, gTable, initialized, rTable

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

canFilterIndexColorModel

构造器概要

构造器

构造器和说明
ContrastFilter()

方法概要

方法

限定符和类型	方法和说明
float	getBrightness() Get the filter brightness.
float	getContrast() Get the filter contrast.
void	setBrightness(float brightness) Set the filter brightness.
void	setContrast(float contrast) Set the filter contrast.
String	toString()
protected float	transferFunction(float f)

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

filter, filterRGB, getLUT, initialize, makeTable

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

setDimensions

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

clone, createCompatibleDestImage, getBounds2D, getPoint2D, getRenderingHints, getRGB, setRGB

从类继承的方法 java.lang.Object

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

构造器详细资料

ContrastFilter

public ContrastFilter()

方法详细资料

transferFunction

protected float transferFunction(float f)

覆盖:

transferFunction 在类中 TransferFilter

setBrightness

public void setBrightness(float brightness)

Set the filter brightness.

参数:

brightness - the brightness in the range 0 to 1

另请参阅:

getBrightness()

getBrightness

public float getBrightness()

Get the filter brightness.

返回:

the brightness in the range 0 to 1

另请参阅:

setBrightness(float)

setContrast

public void setContrast(float contrast)

Set the filter contrast.

参数:

contrast - the contrast in the range 0 to 1

另请参阅:

getContrast()

getContrast

public float getContrast()

Get the filter contrast.

返回:

the contrast in the range 0 to 1

另请参阅:

setContrast(float)

toString

public String toString()

覆盖:

toString 在类中 Object