com.jhlabs.image

Class GrayscaleFilter

java.lang.Object

com.jhlabs.image.AbstractBufferedImageOp

com.jhlabs.image.PointFilter

com.jhlabs.image.GrayscaleFilter

All Implemented Interfaces:

BufferedImageOp, Cloneable, FilterListener, ImageFilterOpSupport

public class GrayscaleFilter
extends PointFilter

A filter which converts an image to grayscale using the NTSC brightness calculation.

Author:

Jerry Huxtable (2006), Adam Zimowski (mrazjava) (2013) - event handling and warning cleanup

Field Summary

Fields inherited from class com.jhlabs.image.PointFilter

canFilterIndexColorModel

Fields inherited from class com.jhlabs.image.AbstractBufferedImageOp

filterListener

Constructor Summary

Constructors

Constructor and Description
GrayscaleFilter()

Method Summary

Methods

Modifier and Type	Method and Description
int	filterRGB(int x, int y, int rgb)
ImageFilterOps	getMetaData() Bambi filter metadata.
String	toString()

Methods inherited from class com.jhlabs.image.PointFilter

filter, setDimensions

Methods inherited from class com.jhlabs.image.AbstractBufferedImageOp

clone, createCompatibleDestImage, createCompatibleDestImage, filterDone, filterInitialize, filterProgress, filterStart, getBounds2D, getPoint2D, getRenderingHints, getRGB, setFilterListener, setRGB

Methods inherited from class java.lang.Object

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

Constructor Detail

GrayscaleFilter

public GrayscaleFilter()

Method Detail

filterRGB

public int filterRGB(int x,
            int y,
            int rgb)

Specified by:

filterRGB in class PointFilter

toString

public String toString()

Overrides:

toString in class Object

getMetaData

public ImageFilterOps getMetaData()

Description copied from class: AbstractBufferedImageOp

Bambi filter metadata. This implementation always returns throws exception because this method can only be called if defined. This method should be overwritten if child filter is used within a Bambi app. The reason exception is throw rather than returning null is to help identify offending class which is much easier than tracing NPE.

Specified by:

getMetaData in interface ImageFilterOpSupport

Overrides:

getMetaData in class AbstractBufferedImageOp