uk.co.silentsoftware.core.converters.image.errordiffusionstrategy
Class AbstractErrorDiffusionDitherStrategy

java.lang.Object
  uk.co.silentsoftware.core.converters.image.errordiffusionstrategy.AbstractErrorDiffusionDitherStrategy

Direct Known Subclasses:

AtkinsonDitherStrategy, BurkesDitherStrategy, FloydSteinbergDitherStrategy, JarvisJudiceNinkeDitherStrategy, LowErrorAtkinsonDitherStrategy, StuckiDitherStrategy

public abstract class AbstractErrorDiffusionDitherStrategy
extends java.lang.Object

Constructor Summary

AbstractErrorDiffusionDitherStrategy()

Method Summary

protected int	calculateAdjustedRGB(int oldPixel, int newPixel, int diffusePixel, float fraction) Calculates the error diffusion given by the fraction against the diffused pixel.
protected boolean	isInBounds(java.awt.image.BufferedImage image, int x, int y) Verify the x and y coordinates are with the image's width and height

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractErrorDiffusionDitherStrategy

public AbstractErrorDiffusionDitherStrategy()

Method Detail

calculateAdjustedRGB

protected int calculateAdjustedRGB(int oldPixel,
                                   int newPixel,
                                   int diffusePixel,
                                   float fraction)

Calculates the error diffusion given by the fraction against the diffused pixel. The error is taken from the currently processed pixel whose original colour and new Spectrum colour values are given in original and new pixel respectively. A percentage of the error is then applied to the diffusePixel as per the error distribution around the currently processed pixel.

Parameters:

oldPixel -

newPixel -

diffusePixel -

fraction -

Returns:

isInBounds

protected boolean isInBounds(java.awt.image.BufferedImage image,
                             int x,
                             int y)

Verify the x and y coordinates are with the image's width and height

Parameters:

image -

x -

y -

Returns: