Class Any2LsRGBRed
- java.lang.Object
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- org.apache.xmlgraphics.image.rendered.AbstractRed
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- org.apache.xmlgraphics.image.rendered.Any2LsRGBRed
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- All Implemented Interfaces:
java.awt.image.RenderedImage
,CachableRed
public class Any2LsRGBRed 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: Any2LsRGBRed.java 1732018 2016-02-24 04:51:06Z gadams $ Originally authored by Thomas DeWeese.
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Field Summary
Fields Modifier and Type Field Description private static double
GAMMA
Gamma for linear to sRGB convertionprivate static double
LFACT
(package private) boolean
srcIssRGB
private static int[]
sRGBToLsRGBLut
Lookup tables for RGB lookups.-
Fields inherited from class org.apache.xmlgraphics.image.rendered.AbstractRed
bounds, cm, minTileX, minTileY, numXTiles, numYTiles, props, sm, srcs, tileGridXOff, tileGridYOff, tileHeight, tileWidth
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Constructor Summary
Constructors Constructor Description Any2LsRGBRed(CachableRed src)
Construct a luminace image from src.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description java.awt.image.WritableRaster
copyData(java.awt.image.WritableRaster wr)
protected static java.awt.image.ColorModel
fixColorModel(CachableRed src)
This function 'fixes' the source's color model.protected static java.awt.image.SampleModel
fixSampleModel(CachableRed src)
This function 'fixes' the source's sample model.static double
sRGBToLsRGB(double value)
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Methods inherited from class org.apache.xmlgraphics.image.rendered.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
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Field Detail
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srcIssRGB
boolean srcIssRGB
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GAMMA
private static final double GAMMA
Gamma for linear to sRGB convertion- See Also:
- Constant Field Values
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LFACT
private static final double LFACT
- See Also:
- Constant Field Values
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sRGBToLsRGBLut
private static final int[] sRGBToLsRGBLut
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.
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Constructor Detail
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Any2LsRGBRed
public Any2LsRGBRed(CachableRed src)
Construct a luminace image from src.- Parameters:
src
- The image to convert to a luminance image
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Method Detail
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sRGBToLsRGB
public static final double sRGBToLsRGB(double value)
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copyData
public java.awt.image.WritableRaster copyData(java.awt.image.WritableRaster wr)
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fixColorModel
protected static java.awt.image.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.
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fixSampleModel
protected static java.awt.image.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.
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