jigl.image.utils
Class ColorSpace

java.lang.Object
  |
  +--jigl.image.utils.ColorSpace

public class ColorSpace

extends Object

This class converts between colorspaces. Currently supports conversions:

      RGB<-->HSV, RGB<-->HLS, RGB<-->CMY, RGB<-->YIQ
 

Constructor Summary

ColorSpace()
Constructor

Method Summary

static float[]	CMYtoRGB(float[] cmy) Converts a RealColorImage value from CMY to RGB colorspace.
static RealColorImage	CMYtoRGB(RealColorImage image) Converts an image from CMY to RGB colorspace.
static float[]	HLStoRGB(float[] hls) Converts a RealColorImage value from HLS to RGB colorspace.
static RealColorImage	HLStoRGB(RealColorImage image) Converts an image from HLS to RGB colorspace.
static float[]	HSVtoRGB(float[] hsv) Converts a RealColorImage value from HSV to RGB colorspace.
static RealColorImage	HSVtoRGB(RealColorImage image) Converts an image from HSV to RGB colorspace.
private static float	maximum(float[] val) Find the maximum among val[0], val[1] and val[2].
private static float	minimum(float[] val) Find the minimum among val[0], val[1] and val[2].
static float[]	RGBtoCMY(float[] rgb) Converts a RealColorImage value from RGB to CMY colorspace.
static RealColorImage	RGBtoCMY(RealColorImage image) Converts an image from RGB to CMY colorspace.
static float[]	RGBtoHLS(float[] rgb) Converts a RealColorImage value from RGB to HLS colorspace.
static RealColorImage	RGBtoHLS(RealColorImage image) Converts an image from RGB to HLS colorspace.
static float[]	RGBtoHSV(float[] rgb) Converts a RealColorImage value from RGB to HSV colorspace.
static RealColorImage	RGBtoHSV(RealColorImage image) Converts an image from RGB to HSV colorspace.
static float[]	RGBtoYIQ(float[] rgb) Converts a RealColorImage value from RGB to YIQ colorspace.
static RealColorImage	RGBtoYIQ(RealColorImage image) Converts an image from RGB to YIQ colorspace.
private static float	value(float n1, float n2, float hue) Utility method.
static float[]	YIQtoRGB(float[] yiq) Converts a RealColorImage value from YIQ to RGB colorspace.
static RealColorImage	YIQtoRGB(RealColorImage image) Converts an image from YIQ to RGB colorspace.

Methods inherited from class java.lang.Object

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

Constructor Detail

ColorSpace

public ColorSpace()

Constructor

Method Detail

maximum

private static float maximum(float[] val)

Find the maximum among val[0], val[1] and val[2].

minimum

private static float minimum(float[] val)

Find the minimum among val[0], val[1] and val[2].

value

private static float value(float n1,
                           float n2,
                           float hue)

Utility method.

RGBtoHSV

public static RealColorImage RGBtoHSV(RealColorImage image)

Converts an image from RGB to HSV colorspace.

Parameters:

image - RealColorImage to convert

Returns:

deep copy of image

HSVtoRGB

public static RealColorImage HSVtoRGB(RealColorImage image)
                               throws NotHSVColorSpaceException

Converts an image from HSV to RGB colorspace.

Parameters:

image - RealColorImage to convert

Returns:

deep copy of image

NotHSVColorSpaceException

RGBtoHLS

public static RealColorImage RGBtoHLS(RealColorImage image)

Converts an image from RGB to HLS colorspace.

Parameters:

image - RealColorImage to convert

Returns:

deep copy of image

HLStoRGB

public static RealColorImage HLStoRGB(RealColorImage image)
                               throws NotHLSColorSpaceException

Converts an image from HLS to RGB colorspace.

Parameters:

image - RealColorImage to convert

Returns:

deep copy of image

NotHLSColorSpaceException

RGBtoCMY

public static RealColorImage RGBtoCMY(RealColorImage image)

Converts an image from RGB to CMY colorspace.

Parameters:

image - RealColorImage to convert

Returns:

deep copy of image

CMYtoRGB

public static RealColorImage CMYtoRGB(RealColorImage image)

Converts an image from CMY to RGB colorspace.

Parameters:

image - RealColorImage to convert

Returns:

deep copy of image

RGBtoYIQ

public static RealColorImage RGBtoYIQ(RealColorImage image)

Converts an image from RGB to YIQ colorspace.

Parameters:

image - RealColorImage to convert

Returns:

deep copy of image

YIQtoRGB

public static RealColorImage YIQtoRGB(RealColorImage image)

Converts an image from YIQ to RGB colorspace.

Parameters:

image - RealColorImage to convert

Returns:

deep copy of image

RGBtoHSV

public static float[] RGBtoHSV(float[] rgb)

Converts a RealColorImage value from RGB to HSV colorspace. R,G,B all (0..255), H (0..360) (or -1 when S == 0), S (0..1), V (0..255)

Parameters:

rgb - RGB value of a RealColorImage

HSVtoRGB

public static float[] HSVtoRGB(float[] hsv)
                        throws NotHSVColorSpaceException

Converts a RealColorImage value from HSV to RGB colorspace. R,G,B all (0..255), H (0..360) (or -1 when S == 0), S (0..1), V (0..255)

Parameters:

hsv - HSV value of a RealColorImage

NotHSVColorSpaceException

RGBtoHLS

public static float[] RGBtoHLS(float[] rgb)

Converts a RealColorImage value from RGB to HLS colorspace. R,G,B all (0..255), H (0..360) (or -1 if S == 0),L (0..255), S (0..1)

Parameters:

rgb - RGB value of a RealColorImage

HLStoRGB

public static float[] HLStoRGB(float[] hls)
                        throws NotHLSColorSpaceException

Converts a RealColorImage value from HLS to RGB colorspace. R,G,B all (0..255), H (0..360) (or -1 if S == 0),L (0..255), S (0..1)

Parameters:

hls - HLS value of a RealColorImage

NotHLSColorSpaceException

RGBtoCMY

public static float[] RGBtoCMY(float[] rgb)

Converts a RealColorImage value from RGB to CMY colorspace. R,G,B,C,M,Y all (0..255)

Parameters:

rgb - RGB value of a RealColorImage

CMYtoRGB

public static float[] CMYtoRGB(float[] cmy)

Converts a RealColorImage value from CMY to RGB colorspace. R,G,B,C,M,Y all (0..255)

Parameters:

cmy - CMY value of a RealColorImage

RGBtoYIQ

public static float[] RGBtoYIQ(float[] rgb)

Converts a RealColorImage value from RGB to YIQ colorspace. R,G,B,Y,I,Q all (0..255)

Parameters:

rgb - RGB value of a RealColorImage

YIQtoRGB

public static float[] YIQtoRGB(float[] yiq)

Converts a RealColorImage value from YIQ to RGB colorspace. R,G,B,Y,I,Q all (0..255)

Parameters:

yiq - YIQ value of a RealColorImage