java.awt.image
Class LookupOp
- BufferedImageOp, RasterOp
LookupOp is a filter that converts each pixel using a lookup table.
For filtering Rasters, the lookup table must have either one component
that is applied to all bands, or one component for every band in the
Rasters.
For BufferedImages, the lookup table may apply to both color and alpha
components. If the lookup table contains one component, or if there are
the same number of components as color components in the source, the table
applies to all color components. Otherwise the table applies to all
components including alpha. Alpha premultiplication is ignored during the
lookup filtering.
After filtering, if color conversion is necessary, the conversion happens,
taking alpha premultiplication into account.
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
LookupOp
public LookupOp(LookupTable lookup,
RenderingHints hints) Construct a new LookupOp using the given LookupTable.
lookup - LookupTable to use.hints - Rendering hints (can be null).
filter
public final BufferedImage filter(BufferedImage src,
BufferedImage dst) Converts the source image using the lookup table specified in the
constructor. The resulting image is stored in the destination image if one
is provided; otherwise a new BufferedImage is created and returned.
The source image cannot use an IndexColorModel, and the destination image
(if one is provided) must have the same size.
- filter in interface BufferedImageOp
src - The source image.dst - The destination image.
filter
public final WritableRaster filter(Raster src,
WritableRaster dest) Filter a raster through a lookup table.
Applies the lookup table for this Rasterop to each pixel of src and
puts the results in dest. If dest is null, a new Raster is created and
returned.
- filter in interface RasterOp
src - The source raster.dest - The destination raster.
- The WritableRaster with the filtered pixels.
LookupOp.java -- Filter that converts each pixel using a lookup table.
Copyright (C) 2004 Free Software Foundation
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