uk.ac.ed.ph.signal
Class ColourScale

java.lang.Object
  java.awt.color.ColorSpace
      uk.ac.ed.ph.signal.ColourScale

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

GammaGreyScale, LinearGreyScale

public class ColourScale
extends ColorSpace

Class to implement a ColorSpace for direct display of Float/Double images.

See Also:

Serialized Form

Field Summary

protected double	gamma Gamma correction value
protected double	lowerLimit Lowest pixel limit
protected static float	MAX_VALUE
protected static float	MIN_VALUE
protected boolean	reverse Constract reverse flag.
protected double	upperLimit Highest pixel limit

Fields inherited from class java.awt.color.ColorSpace

CS_CIEXYZ, CS_GRAY, CS_LINEAR_RGB, CS_PYCC, CS_sRGB, TYPE_2CLR, TYPE_3CLR, TYPE_4CLR, TYPE_5CLR, TYPE_6CLR, TYPE_7CLR, TYPE_8CLR, TYPE_9CLR, TYPE_ACLR, TYPE_BCLR, TYPE_CCLR, TYPE_CMY, TYPE_CMYK, TYPE_DCLR, TYPE_ECLR, TYPE_FCLR, TYPE_GRAY, TYPE_HLS, TYPE_HSV, TYPE_Lab, TYPE_Luv, TYPE_RGB, TYPE_XYZ, TYPE_YCbCr, TYPE_Yxy

Constructor Summary

ColourScale()
Default consturctor

Method Summary

float[]	fromCIEXYZ(float[] rgb)
float[]	fromRGB(float[] rgb) Implements fromfromRGB (not used)
double	getGamma() Meth ot oget the current gamma
double	getLowerLimit() Method to get the lower limit
double	getUpperLimit() Method to get the upper limit
protected float	scaledPixelValue(float value) Method to for the scaled pixel value in the range 0 - > 1.0 wrt to the current lower and upper limits.
void	setDisplayRange(double a, double b) Method to set the display range
void	setGamma(double g) Method to set gamma
void	setLimits(double min, double max) Method to set the ranges.
void	setLowerLimit(double min) Method to set the lower limit (upper will remain unchanged)
void	setReverseContarst(boolean b) Meth ot set/unset reverse contarst, (defaults to false)
void	setUpperLimit(double max) Metho to set the upper limit, (lower will remain unhanged)
float[]	toCIEXYZ(float[] values) Implement fromMIEXYZ conversion (not used)
float[]	toRGB(float value) Return the rgb value for a single input pixel value.
float[]	toRGB(float[] values) Implement method from ColorSpace to give RGB values as floats.

Methods inherited from class java.awt.color.ColorSpace

getInstance, getMaxValue, getMinValue, getName, getNumComponents, getType, isCS_sRGB

Methods inherited from class java.lang.Object

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

Field Detail

MIN_VALUE

protected static final float MIN_VALUE

See Also:

Constant Field Values

MAX_VALUE

protected static final float MAX_VALUE

See Also:

Constant Field Values

lowerLimit

protected double lowerLimit

Lowest pixel limit

upperLimit

protected double upperLimit

Highest pixel limit

gamma

protected double gamma

Gamma correction value

reverse

protected boolean reverse

Constract reverse flag.

Constructor Detail

ColourScale

public ColourScale()

Default consturctor

Method Detail

toCIEXYZ

public float[] toCIEXYZ(float[] values)

Implement fromMIEXYZ conversion (not used)

Specified by:

toCIEXYZ in class ColorSpace

fromCIEXYZ

public float[] fromCIEXYZ(float[] rgb)

Specified by:

fromCIEXYZ in class ColorSpace

toRGB

public float[] toRGB(float[] values)

Implement method from ColorSpace to give RGB values as floats.

Specified by:

toRGB in class ColorSpace

Parameters:

values - array of input values, only [0] used

Returns:

float[] rgb values.

fromRGB

public float[] fromRGB(float[] rgb)

Implements fromfromRGB (not used)

Specified by:

fromRGB in class ColorSpace

toRGB

public float[] toRGB(float value)

Return the rgb value for a single input pixel value.

Parameters:

value - the pixel value

Returns:

float[] the rgb values.

setLimits

public void setLimits(double min,
                      double max)

Method to set the ranges.

Parameters:

min - the lower value

max - the upper value

setDisplayRange

public void setDisplayRange(double a,
                            double b)

Method to set the display range

getLowerLimit

public double getLowerLimit()

Method to get the lower limit

getUpperLimit

public double getUpperLimit()

Method to get the upper limit

setLowerLimit

public void setLowerLimit(double min)

Method to set the lower limit (upper will remain unchanged)

Parameters:

min - the lower limit

setUpperLimit

public void setUpperLimit(double max)

Metho to set the upper limit, (lower will remain unhanged)

setGamma

public void setGamma(double g)

Method to set gamma

Parameters:

g - the gamma factor

getGamma

public double getGamma()

Meth ot oget the current gamma

setReverseContarst

public void setReverseContarst(boolean b)

Meth ot set/unset reverse contarst, (defaults to false)

scaledPixelValue

protected float scaledPixelValue(float value)

Method to for the scaled pixel value in the range 0 - > 1.0 wrt to the current lower and upper limits.