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Java Platform 1.2 Beta 4 |
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java.lang.Object | +--java.awt.color.ColorSpace
Several variables are defined for purposes of referring to color space types (e.g. TYPE_RGB, TYPE_XYZ, etc.) and to refer to specific color spaces (e.g. CS_sRGB and CS_CIEXYZ). sRGB is a proposed standard RGB color space. For more information, see http://www.w3.org/pub/WWW/Graphics/Color/sRGB.html .
The purpose of the methods to transform to/from the well-defined CIEXYZ color space is to support conversions between any two color spaces at a reasonably high degree of accuracy. It is expected that particular implementations of subclasses of ColorSpace (e.g. ICC_ColorSpace) will support high performance conversion based on underlying platform color management systems.
The CS_CIEXYZ space used by the toCIEXYZ/fromCIEXYZ methods can be described as follows:
CIEXYZ viewing illuminance: 200 lux viewing white point: CIE D50 media white point: "that of a perfectly reflecting diffuser" -- D50 media black point: 0 lux or 0 Reflectance flare: 1 percent surround: 20percent of the media white point media description: reflection print (i.e., RLAB, Hunt viewing media) note: For developers creating an ICC profile for this conversion space, the following is applicable. Use a simple Von Kries white point adaptation folded into the 3X3 matrix parameters and fold the flare and surround effects into the three one-dimensional lookup tables (assuming one uses the minimal model for monitors).
ICC_ColorSpace
Field Summary | |
static int | CS_CIEXYZ
The CIEXYZ conversion color space defined above. |
static int | CS_GRAY
The built-in linear gray scale color space. |
static int | CS_LINEAR_RGB
A built-in linear RGB color space. |
static int | CS_PYCC
The Photo YCC conversion color space. |
static int | CS_sRGB
The sRGB color space defined at http://www.w3.org/pub/WWW/Graphics/Color/sRGB.html . |
static int | TYPE_2CLR
Generic 2 component color spaces. |
static int | TYPE_3CLR
Generic 3 component color spaces. |
static int | TYPE_4CLR
Generic 4 component color spaces. |
static int | TYPE_5CLR
Generic 5 component color spaces. |
static int | TYPE_6CLR
Generic 6 component color spaces. |
static int | TYPE_7CLR
Generic 7 component color spaces. |
static int | TYPE_8CLR
Generic 8 component color spaces. |
static int | TYPE_9CLR
Generic 9 component color spaces. |
static int | TYPE_ACLR
Generic 10 component color spaces. |
static int | TYPE_BCLR
Generic 11 component color spaces. |
static int | TYPE_CCLR
Generic 12 component color spaces. |
static int | TYPE_CMY
Any of the family of CMY color spaces. |
static int | TYPE_CMYK
Any of the family of CMYK color spaces. |
static int | TYPE_DCLR
Generic 13 component color spaces. |
static int | TYPE_ECLR
Generic 14 component color spaces. |
static int | TYPE_FCLR
Generic 15 component color spaces. |
static int | TYPE_GRAY
Any of the family of GRAY color spaces. |
static int | TYPE_HLS
Any of the family of HLS color spaces. |
static int | TYPE_HSV
Any of the family of HSV color spaces. |
static int | TYPE_Lab
Any of the family of Lab color spaces. |
static int | TYPE_Luv
Any of the family of Luv color spaces. |
static int | TYPE_RGB
Any of the family of RGB color spaces. |
static int | TYPE_XYZ
Any of the family of XYZ color spaces. |
static int | TYPE_YCbCr
Any of the family of YCbCr color spaces. |
static int | TYPE_Yxy
Any of the family of Yxy color spaces. |
Constructor Summary | |
ColorSpace(int type,
int numcomponents)
Constructs a ColorSpace object given a color space type and the number of components. |
Method Summary | |
abstract float[] | fromCIEXYZ(float[] colorvalue)
Transforms a color value assumed to be in the CS_CIEXYZ conversion color space into this ColorSpace. |
abstract float[] | fromRGB(float[] rgbvalue)
Transforms a color value assumed to be in the default CS_sRGB color space into this ColorSpace. |
static ColorSpace | getInstance(int colorspace)
Returns a ColorSpace representing one of the specific predefined color spaces. |
String | getName(int idx)
Returns the name of the component given the component index |
int | getNumComponents()
Returns the number of components of this ColorSpace. |
int | getType()
Returns the color space type of this ColorSpace (for example TYPE_RGB, TYPE_XYZ, ...). |
boolean | isCS_sRGB()
Returns true if the ColorSpace is CS_sRGB. |
abstract float[] | toCIEXYZ(float[] colorvalue)
Transforms a color value assumed to be in this ColorSpace into the CS_CIEXYZ conversion color space. |
abstract float[] | toRGB(float[] colorvalue)
Transforms a color value assumed to be in this ColorSpace into a value in the default CS_sRGB color space. |
Methods inherited from class java.lang.Object | |
clone , equals , finalize , getClass , hashCode , notify , notifyAll , toString , wait , wait , wait |
Field Detail |
public static final int TYPE_XYZ
public static final int TYPE_Lab
public static final int TYPE_Luv
public static final int TYPE_YCbCr
public static final int TYPE_Yxy
public static final int TYPE_RGB
public static final int TYPE_GRAY
public static final int TYPE_HSV
public static final int TYPE_HLS
public static final int TYPE_CMYK
public static final int TYPE_CMY
public static final int TYPE_2CLR
public static final int TYPE_3CLR
public static final int TYPE_4CLR
public static final int TYPE_5CLR
public static final int TYPE_6CLR
public static final int TYPE_7CLR
public static final int TYPE_8CLR
public static final int TYPE_9CLR
public static final int TYPE_ACLR
public static final int TYPE_BCLR
public static final int TYPE_CCLR
public static final int TYPE_DCLR
public static final int TYPE_ECLR
public static final int TYPE_FCLR
public static final int CS_sRGB
public static final int CS_LINEAR_RGB
public static final int CS_CIEXYZ
public static final int CS_PYCC
public static final int CS_GRAY
Constructor Detail |
protected ColorSpace(int type, int numcomponents)
Method Detail |
public static ColorSpace getInstance(int colorspace)
colorspace
- a specific color space identified by one of
the predefined class constants (e.g. CS_sRGB, CS_LINEAR_RGB,
CS_CIEXYZ, CS_GRAY, or CS_PYCC)public boolean isCS_sRGB()
public abstract float[] toRGB(float[] colorvalue)
colorvalue
- a float array with length of at least the number
of components in this ColorSpacepublic abstract float[] fromRGB(float[] rgbvalue)
rgbvalue
- a float array with length of at least 3public abstract float[] toCIEXYZ(float[] colorvalue)
colorvalue
- a float array with length of at least the number
of components in this ColorSpacepublic abstract float[] fromCIEXYZ(float[] colorvalue)
colorvalue
- a float array with length of at least 3public int getType()
public int getNumComponents()
public String getName(int idx)
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Java Platform 1.2 Beta 4 |
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