Class Dithering

java.lang.Object

org.apache.commons.imaging.palette.Dithering

public final class Dithering
extends Object

Dithering algorithms to use when quantizing an image to palette form.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Dithering()

Method Summary

Modifier and Type	Method	Description
private static int	adjustPixel(int argb, int errA, int errR, int errG, int errB, int mul)
static void	applyFloydSteinbergDithering(BufferedImage image, Palette palette)	Changes the given image to only use colors from the given palette, applying Floyd-Steinberg dithering in the process.

Methods inherited from class Object

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

Constructor Details

Dithering

private Dithering()

Method Details

adjustPixel

private static int adjustPixel(int argb,
 int errA,
 int errR,
 int errG,
 int errB,
 int mul)

applyFloydSteinbergDithering

public static void applyFloydSteinbergDithering(BufferedImage image,
 Palette palette)
                                         throws ImagingException

Changes the given image to only use colors from the given palette, applying Floyd-Steinberg dithering in the process. Ensure that your alpha values in the image and in the palette are consistent.

Parameters:

image - the image to change

palette - the palette to use

Throws:

ImagingException - if it fails to read the palette index