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

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

All Implemented Interfaces:

ErrorDiffusionDitherStrategy

public class LowErrorAtkinsonDitherStrategy
extends AbstractErrorDiffusionDitherStrategy
implements ErrorDiffusionDitherStrategy

Special low error dither strategy especially for Spectrum image conversion and only (currently) in use in this program, based on the Atkinson distribution but using only 25% error distribution. This strategy tends to get the best results in most cases, however images with high detail but similar colours (e.g. blues underwater/red light on a face etc etc) may lose some detail depending on pre process contrast. The trade off is that the error distribution is far less likely to propagate to surrounding *ZX Spectrum attribute blocks* resulting in less colour clash than the classical diffusion algorithms. This strategy was devised by me, Benjamin Brown, based on the original Atkinson distribution of error, if anybody feels like publishing it :)

Field Summary

static double

TWENTY_FOURTH

Constructor Summary

LowErrorAtkinsonDitherStrategy()

Method Summary

void	distributeError(java.awt.image.BufferedImage output, int oldPixel, int newPixel, int x, int y, java.lang.Integer boundX, java.lang.Integer boundY) Distributes the error on the output image at the given x,y, using the difference between the original (old) pixel and the new pixel.
java.lang.String	toString()

Methods inherited from class uk.co.silentsoftware.core.converters.image.errordiffusionstrategy.AbstractErrorDiffusionDitherStrategy

calculateAdjustedRGB, isInBounds

Methods inherited from class java.lang.Object

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

Field Detail

TWENTY_FOURTH

public static final double TWENTY_FOURTH

See Also:

Constant Field Values

Constructor Detail

LowErrorAtkinsonDitherStrategy

public LowErrorAtkinsonDitherStrategy()

Method Detail

distributeError

public void distributeError(java.awt.image.BufferedImage output,
                            int oldPixel,
                            int newPixel,
                            int x,
                            int y,
                            java.lang.Integer boundX,
                            java.lang.Integer boundY)

Description copied from interface: ErrorDiffusionDitherStrategy

Distributes the error on the output image at the given x,y, using the difference between the original (old) pixel and the new pixel.

Specified by:

distributeError in interface ErrorDiffusionDitherStrategy

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object