//-----------------------------------------------------------------------//
// //
// R G B T o B i l e v e l //
// //
//-----------------------------------------------------------------------//
/*
* Copyright (c) 2002 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* -Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* -Redistribution in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that Software is not designed,licensed or intended for use in
* the design, construction, operation or maintenance of any nuclear facility.
*/
package omr.jai;
import java.awt.*;
import java.awt.color.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.*;
import java.awt.image.renderable.*;
import java.util.*;
import javax.media.jai.*;
import javax.media.jai.operator.*;
import javax.media.jai.widget.*;
/**
* Demo code for dithering a 24-bit RGB image to a monochrome (1-bit
* or bilevel) image. The source image must be an 24-bit RGB image.
* The result is displayed.
*
* Usage: java RGBToBilevel filename [true]
*
* If the second argument is present and equal to "true" then error diffusion
* will be used; otherwise ordered dithering will be used.
*/
public class RGBToBilevel extends Frame {
public static void main(String[] args) {
new RGBToBilevel(args[0],
args.length > 1 ? args[1].equals("true") : false);
}
RGBToBilevel(final String fileName,
boolean isErrorDiffusion)
{
// Load the file.
PlanarImage src = JAI.create("fileload", fileName);
// Load the ParameterBlock for the dithering operation
// and set the operation name.
ParameterBlock pb = new ParameterBlock();
pb.addSource(src);
String opName = null;
if(isErrorDiffusion) {
opName = "errordiffusion";
LookupTableJAI lut =
new LookupTableJAI(new byte[][] {{(byte)0x00, (byte)0xff},
{(byte)0x00, (byte)0xff},
{(byte)0x00, (byte)0xff}});
pb.add(lut);
pb.add(KernelJAI.ERROR_FILTER_FLOYD_STEINBERG);
} else {
opName = "ordereddither";
ColorCube cube = ColorCube.createColorCube(DataBuffer.TYPE_BYTE,
0, new int[] {2, 2, 2});
pb.add(cube);
pb.add(KernelJAI.DITHER_MASK_443);
}
// Create a layout containing an IndexColorModel which maps
// zero to zero and unity to 255; force SampleModel to be bilevel.
ImageLayout layout = new ImageLayout();
byte[] map = new byte[] {(byte)0x00, (byte)0xff};
ColorModel cm = new IndexColorModel(1, 2, map, map, map);
layout.setColorModel(cm);
SampleModel sm = new MultiPixelPackedSampleModel(DataBuffer.TYPE_BYTE,
src.getWidth(),
src.getHeight(),
1);
layout.setSampleModel(sm);
// Create a hint containing the layout.
RenderingHints hints = new RenderingHints(JAI.KEY_IMAGE_LAYOUT,
layout);
// Dither the image.
final PlanarImage dst = JAI.create(opName, pb, hints);
// Exit on window closing.
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent we) {
JAI.create("filestore", dst, fileName + ".out", "PNG", null);
System.exit(0);
}
});
// Display the result.
//// ATTENTION A REMPLACER : add(new ScrollingImagePanel(dst, dst.getWidth(), dst.getHeight()));
pack();
setVisible(true);
}
}
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