Class Any2sRGBRed

java.lang.Object

org.apache.batik.ext.awt.image.rendered.AbstractRed

org.apache.batik.ext.awt.image.rendered.Any2sRGBRed

All Implemented Interfaces:

RenderedImage, CachableRed

public class Any2sRGBRed
extends AbstractRed

This function will tranform an image from any colorspace into a luminance image. The alpha channel if any will be copied to the new image.

Version:

$Id$

Field Summary

Fields

Modifier and Type	Field	Description
private static final double	GAMMA	Exponent for linear to sRGB convertion
private static final int[]	linearToSRGBLut	Lookup tables for RGB lookups.
(package private) boolean	srcIsLsRGB

Fields inherited from class AbstractRed

bounds, cm, minTileX, minTileY, numXTiles, numYTiles, props, sm, srcs, tileGridXOff, tileGridYOff, tileHeight, tileWidth

Constructor Summary

Constructors

Constructor	Description
Any2sRGBRed(CachableRed src)	Construct a luminance image from src.

Method Summary

Modifier and Type	Method	Description
static WritableRaster	applyLut_INT(WritableRaster wr, int[] lut)
WritableRaster	copyData(WritableRaster wr)
protected static ColorModel	fixColorModel(CachableRed src)	This function 'fixes' the source's color model.
protected static SampleModel	fixSampleModel(CachableRed src)	This function 'fixes' the source's sample model.
static boolean	is_INT_PACK_COMP(SampleModel sm)

Methods inherited from class AbstractRed

copyBand, copyToRaster, getBounds, getColorModel, getData, getData, getDependencyRegion, getDirtyRegion, getHeight, getMinTileX, getMinTileY, getMinX, getMinY, getNumXTiles, getNumYTiles, getProperty, getPropertyNames, getSampleModel, getSources, getTile, getTileGridXOffset, getTileGridYOffset, getTileHeight, getTileWidth, getWidth, getXTile, getYTile, init, init, makeTile, updateTileGridInfo

Methods inherited from class Object

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

Field Details

srcIsLsRGB

boolean srcIsLsRGB

GAMMA

private static final double GAMMA

Exponent for linear to sRGB convertion

See Also:

• Constant Field Values

linearToSRGBLut

private static final int[] linearToSRGBLut

Lookup tables for RGB lookups. The linearToSRGBLut is used when noise values are considered to be on a linearScale. The linearToLinear table is used when the values are considered to be on the sRGB scale to begin with.

Constructor Details

Any2sRGBRed

public Any2sRGBRed(CachableRed src)

Construct a luminance image from src.

Parameters:

src - The image to convert to a luminance image

Method Details

is_INT_PACK_COMP

public static boolean is_INT_PACK_COMP(SampleModel sm)

applyLut_INT

public static WritableRaster applyLut_INT(WritableRaster wr,
 int[] lut)

copyData

public WritableRaster copyData(WritableRaster wr)

fixColorModel

protected static ColorModel fixColorModel(CachableRed src)

This function 'fixes' the source's color model. Right now it just selects if it should have one or two bands based on if the source had an alpha channel.

fixSampleModel

protected static SampleModel fixSampleModel(CachableRed src)

This function 'fixes' the source's sample model. Right now it just selects if it should have 3 or 4 bands based on if the source had an alpha channel.