Package de.gsi.chart.utils

Class PaletteQuantizerNeuQuant

java.lang.Object

de.gsi.chart.utils.PaletteQuantizerNeuQuant

All Implemented Interfaces:

PaletteQuantizer

public class PaletteQuantizerNeuQuant
extends java.lang.Object
implements PaletteQuantizer

NeuQuant Neural-Net Quantisation Algorithm Copyright (c) 1994 Anthony Dekker NEUQUANT Neural-Net quantization algorithm by Anthony Dekker, 1994. See "Kohonen neural networks for optimal colour quantization" in "Network: Computation in Neural Systems" Vol. 5 (1994) pp 351-367. for a discussion of the algorithm. Any party obtaining a copy of these files from the author, directly or indirectly, is granted, free of charge, a full and unrestricted irrevocable, world-wide, paid up, royalty-free, non-exclusive right and license to deal in this software and documentation files (the "Software"), including without limitation the rights to use, copy, modify, merge, publish, distribute, sub-license, and/or sell copies of the Software, and to permit persons who receive copies from any such party to do so, with the only requirement being that this copyright notice remain intact.

Author:

Anthony Dekker - original author, Hernan J Gonzalez - modified for PngReader - no special colours - sequential read, rstein adapted to a modern Java and chart-fx usage

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	PaletteQuantizerNeuQuant.PixelGetter

Field Summary

Fields

Modifier and Type	Field	Description
protected int[][]	colormap

Constructor Summary

Constructors

Constructor	Description
PaletteQuantizerNeuQuant(int w, int h, PaletteQuantizerNeuQuant.PixelGetter pixelGetter)

Method Summary

Modifier and Type	Method	Description
int[]	convert(int r, int g, int b)
int[]	convert(int r, int g, int b, int a)
int[]	getColor(int i)
int	getColorCount()
int	getTransparentIndex()
protected int	indexSearch(int b, int g, int r)
protected void	initGuard()	computes neural network if it hasn't been already done
boolean	isParReserveAlphaColor()
int	lookup(int r, int g, int b)
int	lookup(int r, int g, int b, int a)
void	run()
void	setParAlphabiasshift(int parAlphabiasshift)
void	setParBeta(double parBeta)
void	setParGamma(double parGamma)
void	setParMaxPixelsToSample(int parMaxPixelsToSample)
void	setParNcolors(int parNcolors)
void	setParNcycles(int parNcycles)
void	setParRadiusbiasshift(int parRadiusbiasshift)
void	setParRadiusdec(int parRadiusdec)
void	setParReserveAlphaColor(boolean parReserveAlphaColor)
void	setParTransparencyThreshold(int parTransparencyThreshold)
protected void	setUpArrays()

Methods inherited from class java.lang.Object

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

Field Detail

colormap

protected int[][] colormap

Constructor Detail

PaletteQuantizerNeuQuant

public PaletteQuantizerNeuQuant(int w,
                                int h,
                                PaletteQuantizerNeuQuant.PixelGetter pixelGetter)

Method Detail

convert

public int[] convert(int r,
                     int g,
                     int b)

convert

public int[] convert(int r,
                     int g,
                     int b,
                     int a)

getColor

public int[] getColor(int i)

Specified by:

getColor in interface PaletteQuantizer

getColorCount

public int getColorCount()

Specified by:

getColorCount in interface PaletteQuantizer

getTransparentIndex

public int getTransparentIndex()

Specified by:

getTransparentIndex in interface PaletteQuantizer

isParReserveAlphaColor

public boolean isParReserveAlphaColor()

lookup

public int lookup(int r,
                  int g,
                  int b)

Specified by:

lookup in interface PaletteQuantizer

lookup

public int lookup(int r,
                  int g,
                  int b,
                  int a)

Specified by:

lookup in interface PaletteQuantizer

run

public void run()

setParAlphabiasshift

public void setParAlphabiasshift(int parAlphabiasshift)

setParBeta

public void setParBeta(double parBeta)

setParGamma

public void setParGamma(double parGamma)

setParMaxPixelsToSample

public void setParMaxPixelsToSample(int parMaxPixelsToSample)

setParNcolors

public void setParNcolors(int parNcolors)

setParNcycles

public void setParNcycles(int parNcycles)

setParRadiusbiasshift

public void setParRadiusbiasshift(int parRadiusbiasshift)

setParRadiusdec

public void setParRadiusdec(int parRadiusdec)

setParReserveAlphaColor

public void setParReserveAlphaColor(boolean parReserveAlphaColor)

setParTransparencyThreshold

public void setParTransparencyThreshold(int parTransparencyThreshold)

initGuard

protected void initGuard()

computes neural network if it hasn't been already done

indexSearch

protected int indexSearch(int b,
                          int g,
                          int r)

setUpArrays

protected void setUpArrays()