Examples of java.awt.image.BandCombineOp

java.awt.image.BandCombineOp
This class performs an arbitrary linear combination of the bands in a Raster, using a specified matrix.
The width of the matrix must be equal to the number of bands in the source Raster, optionally plus one. If there is one more column in the matrix than the number of bands, there is an implied 1 at the end of the vector of band samples representing a pixel. The height of the matrix must be equal to the number of bands in the destination.
For example, a 3-banded Raster might have the following transformation applied to each pixel in order to invert the second band of the Raster.
```
 [ 1.0   0.0   0.0    0.0  ]     [ b1 ]     [ 0.0  -1.0   0.0  255.0  ]  x  [ b2 ] [ 0.0   0.0   1.0    0.0  ]     [ b3 ] [ 1 ] 
```
Note that the source and destination can be the same object. @version 10 Feb 1997

                matrix = new float[sm.getNumBands()][1];
                matrix[0][0] = 1;
            }


            Raster srcRas = src.getData(wr.getBounds());
            BandCombineOp op = new BandCombineOp(matrix, null);
            op.filter(srcRas, wr);
        } else {
            Raster         srcRas = src.getData(wr.getBounds());
            WritableRaster srcWr  = (WritableRaster)srcRas;


            // Divide out alpha if we have it.  We need to do this since
            // the color convert may not be a linear operation which may 
            // lead to out of range values.
            ColorModel srcBICM = srcCM;
            if (srcCM.hasAlpha())
                srcBICM = GraphicsUtil.coerceData(srcWr, srcCM, false);


            BufferedImage srcBI, dstBI;
            srcBI = new BufferedImage(srcCM, 
                                      srcWr.createWritableTranslatedChild(0,0),
                                      false, 
                                      null);
            ColorModel dstCM = getColorModel();
            if (!dstCM.hasAlpha()) {
                // No alpha ao we don't have to work around the bug
                // in the color convert op.
                dstBI = new BufferedImage
                    (dstCM, wr.createWritableTranslatedChild(0,0),
                     dstCM.isAlphaPremultiplied(), null);
            } else {
                // All this nonsense is to work around the fact that the
                // Color convert op doesn't properly copy the Alpha from
                // src to dst.
                PixelInterleavedSampleModel dstSM;
                dstSM = (PixelInterleavedSampleModel)wr.getSampleModel();
                SampleModel smna = new PixelInterleavedSampleModel
                    (dstSM.getDataType(),    
                     dstSM.getWidth(),       dstSM.getHeight(),
                     dstSM.getPixelStride(), dstSM.getScanlineStride(),
                     new int [] { 0 });


                WritableRaster dstWr;
                dstWr = Raster.createWritableRaster(smna,
                                                    wr.getDataBuffer(),
                                                    new Point(0,0));
                dstWr = dstWr.createWritableChild
                    (wr.getMinX()-wr.getSampleModelTranslateX(),
                     wr.getMinY()-wr.getSampleModelTranslateY(),
                     wr.getWidth(), wr.getHeight(),
                     0, 0, null);
                
                ColorModel cmna = new ComponentColorModel
                    (ColorSpace.getInstance(ColorSpace.CS_GRAY),
                     new int [] {8}, false, false,
                     Transparency.OPAQUE, 
                     DataBuffer.TYPE_BYTE);


                dstBI = new BufferedImage(cmna, dstWr, false, null);
            }


            ColorConvertOp op = new ColorConvertOp(null);
            op.filter(srcBI, dstBI);


            // I never have to 'fix' alpha premult since I take
            // it's value from my source....
            if (dstCM.hasAlpha())
                copyBand(srcWr, sm.getNumBands()-1,

View Full Code Here

                matrix[2][2] = 1; // Blu
                matrix[3][3] = 1; // Alpha
                break;
            }
            Raster srcRas = src.getData(wr.getBounds());
            BandCombineOp op = new BandCombineOp(matrix, null);
            op.filter(srcRas, wr);
            return wr;
        }


        if (srcCM.getColorSpace() ==
            ColorSpace.getInstance(ColorSpace.CS_GRAY)) {


            // This is a little bit of a hack.  There is only
            // a linear grayscale ICC profile in the JDK so
            // many things use this when the data _really_
            // has sRGB gamma applied.
            try {
            float [][] matrix = null;
            switch (srcSM.getNumBands()) {
            case 1:
                matrix = new float[3][1];
                matrix[0][0] = 1; // Red
                matrix[1][0] = 1; // Grn
                matrix[2][0] = 1; // Blu
                break;
            case 2:
            default:
                matrix = new float[4][2];
                matrix[0][0] = 1; // Red
                matrix[1][0] = 1; // Grn
                matrix[3][0] = 1; // Blu
                matrix[4][1] = 1; // Alpha
                break;
            }
            Raster srcRas = src.getData(wr.getBounds());
            BandCombineOp op = new BandCombineOp(matrix, null);
            op.filter(srcRas, wr);
            } catch (Throwable t) {
                t.printStackTrace();
            }
            return wr;
        }


        ColorModel dstCM = getColorModel();
        if (srcCM.getColorSpace() == dstCM.getColorSpace()) {
            // No transform needed, just reformat data...
            // System.out.println("Bypassing");


            if (is_INT_PACK_COMP(srcSM))
                src.copyData(wr);
            else
                GraphicsUtil.copyData(src.getData(wr.getBounds()), wr);


            return wr;
        }


        Raster srcRas = src.getData(wr.getBounds());
        WritableRaster srcWr  = (WritableRaster)srcRas;


        // Divide out alpha if we have it.  We need to do this since
        // the color convert may not be a linear operation which may
        // lead to out of range values.
        ColorModel srcBICM = srcCM;
        if (srcCM.hasAlpha())
            srcBICM = GraphicsUtil.coerceData(srcWr, srcCM, false);


        BufferedImage srcBI, dstBI;
        srcBI = new BufferedImage(srcBICM,
                                  srcWr.createWritableTranslatedChild(0,0),
                                  false,
                                  null);


        // System.out.println("src: " + srcBI.getWidth() + "x" +
        //                    srcBI.getHeight());


        ColorConvertOp op = new ColorConvertOp(dstCM.getColorSpace(),
                                               null);
        dstBI = op.filter(srcBI, null);


        // System.out.println("After filter:");


        WritableRaster wr00 = wr.createWritableTranslatedChild(0,0);
        for (int i=0; i<dstCM.getColorSpace().getNumComponents(); i++)

View Full Code Here

                matrix[3][3] = 1; // Alpha
                break;
            }


            Raster srcRas = src.getData(wr.getBounds());
            BandCombineOp op = new BandCombineOp(matrix, null);
            op.filter(srcRas, wr);
        } else {
            ColorModel dstCM = getColorModel();
            BufferedImage dstBI;


            if (!dstCM.hasAlpha()) {
                // No alpha ao we don't have to work around the bug
                // in the color convert op.
                dstBI = new BufferedImage
                    (dstCM, wr.createWritableTranslatedChild(0,0),
                     dstCM.isAlphaPremultiplied(), null);
            } else {
                // All this nonsense is to work around the fact that
                // the Color convert op doesn't properly copy the
                // Alpha from src to dst.
                SinglePixelPackedSampleModel dstSM;
                dstSM = (SinglePixelPackedSampleModel)wr.getSampleModel();
                int [] masks = dstSM.getBitMasks();
                SampleModel dstSMNoA = new SinglePixelPackedSampleModel
                    (dstSM.getDataType(), dstSM.getWidth(), dstSM.getHeight(),
                     dstSM.getScanlineStride(),
                     new int[] {masks[0], masks[1], masks[2]});
                ColorModel dstCMNoA = GraphicsUtil.Linear_sRGB;


                WritableRaster dstWr;
                dstWr = Raster.createWritableRaster(dstSMNoA,
                                                    wr.getDataBuffer(),
                                                    new Point(0,0));
                dstWr = dstWr.createWritableChild
                    (wr.getMinX()-wr.getSampleModelTranslateX(),
                     wr.getMinY()-wr.getSampleModelTranslateY(),
                     wr.getWidth(), wr.getHeight(),
                     0, 0, null);


                dstBI = new BufferedImage(dstCMNoA, dstWr, false, null);
            }


            // Divide out alpha if we have it.  We need to do this since
            // the color convert may not be a linear operation which may
            // lead to out of range values.
            ColorModel srcBICM = srcCM;
            WritableRaster srcWr;
            if ( srcCM.hasAlpha() && srcCM.isAlphaPremultiplied() ) {
                Rectangle wrR = wr.getBounds();
                SampleModel sm = srcCM.createCompatibleSampleModel
                    (wrR.width, wrR.height);


                srcWr = Raster.createWritableRaster
                    (sm, new Point(wrR.x, wrR.y));
                src.copyData(srcWr);
                srcBICM = GraphicsUtil.coerceData(srcWr, srcCM, false);
            } else {
                Raster srcRas = src.getData(wr.getBounds());
                srcWr = GraphicsUtil.makeRasterWritable(srcRas);
            }


            BufferedImage srcBI;
            srcBI = new BufferedImage(srcBICM,
                                      srcWr.createWritableTranslatedChild(0,0),
                                      false,
                                      null);


            /*
             * System.out.println("src: " + srcBI.getWidth() + "x" +
             *                    srcBI.getHeight());
             * System.out.println("dst: " + dstBI.getWidth() + "x" +
             *                    dstBI.getHeight());
             */


            ColorConvertOp op = new ColorConvertOp(null);
            op.filter(srcBI, dstBI);


            if (dstCM.hasAlpha())
                copyBand(srcWr, srcSM.getNumBands()-1,
                         wr,    getSampleModel().getNumBands()-1);
        }

View Full Code Here

    float[][] matrix = new float[][] {new float[] {1, 2, 3},
                                      new float[] {4, 5, 6},
                                      new float[] {7, 8, 9}};
    
    Raster src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 3, new Point(5, 5));
    BandCombineOp op = new BandCombineOp(matrix, null);
    
    try
    {
      Raster dst = op.createCompatibleDestRaster(src);
      harness.check(dst.getNumBands(), 3);
      harness.check(dst.getHeight(), src.getHeight());
      harness.check(dst.getWidth(), src.getWidth());
      harness.check(dst.getTransferType(), src.getTransferType());
      harness.check(dst.getDataBuffer().getDataType(), src.getDataBuffer().getDataType());
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);
    }
    
    // Try a different type
    src = Raster.createBandedRaster(DataBuffer.TYPE_BYTE, 25, 40, 3, new Point(5, 5));
    try
    {
      Raster dst = op.createCompatibleDestRaster(src);
      harness.check(dst.getTransferType(), src.getTransferType());
      harness.check(dst.getDataBuffer().getDataType(), src.getDataBuffer().getDataType());
      harness.check(dst.getNumBands(), 3);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);
    }
    
    // This is where things get messy.  The Sun API states that "The width of the matrix
    // must be equal to the number of bands in the source Raster, optionally plus one. If
    // there is one more column in the matrix than the number of bands, there is an implied
    // 1 at the end of the vector of band samples representing a pixel. The height of the matrix 
    // must be equal to the number of bands in the destination", but this is NOT how their
    // implementation behaves.
    //
    // They miss one requirement, however: the number of bands in the source and destination
    // rasters must also be equal... which effectively means
    // ((width == height) || (width == height + 1)) must be true
    
    // The source (4 bands) is incompatible with the matrix (width = 3)


    src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 4, new Point(5, 5));
    try
    {
      op.createCompatibleDestRaster(src);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);
    }
    
    // The destination raster (3 bands) would be incompatibel with the source (2 bands)
    // (the undocumented requirement)
    src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 1, new Point(5, 5));
    try
    {
      op.createCompatibleDestRaster(src);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);

View Full Code Here

    // Height still == 3, but width == 4
    float[][] matrix = new float[][] {new float[] {1, 2, 3, 1},
                                      new float[] {4, 5, 6, 1},
                                      new float[] {7, 8, 9, 1}};


    BandCombineOp op = new BandCombineOp(matrix, null);


    // Source has 3 bands, which is the width minus one (uses the implied 1), works
    Raster src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 3, new Point(5, 5));
    try
    {
      Raster dst = op.createCompatibleDestRaster(src);
      harness.check(dst.getNumBands(), 3);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);
    }


    // Source has 4 bands, which is compatible with the matrix (width is 4)
    // The destination raster, however, is not compatible with the source (3 vs 4 bands)
    // (the undocumented restriction)
    src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 4, new Point(5, 5));
    try
    {
      op.createCompatibleDestRaster(src);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);
    }


    // Also incompatible, but this is expected according to the spec
    src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 2, new Point(5, 5));
    try
    {
      op.createCompatibleDestRaster(src);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);
    }


    // Also still incompatible
    src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 5, new Point(5, 5));
    try
    {
      op.createCompatibleDestRaster(src);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);

View Full Code Here

    float[][] matrix = new float[][] {new float[] {1, 2, 3, 1, 5},
                                      new float[] {4, 5, 6, 1, 5},
                                      new float[] {7, 8, 9, 1, 5},
                                      new float[] {1, 2, 3, 4, 5}};


    BandCombineOp op = new BandCombineOp(matrix, null);


    // Works using the implied 1
    Raster src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 4, new Point(5, 5));
    try
    {
      Raster dst = op.createCompatibleDestRaster(src);
      harness.check(dst.getNumBands(), 4);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);
    }


    // Does not use implied 1; however source and dest would have incompabible bands
    // (undocumented restriction)
    src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 5, new Point(5, 5));
    try
    {
      op.createCompatibleDestRaster(src);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);
    }


    // Just for completeness
    src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 3, new Point(5, 5));
    try
    {
      op.createCompatibleDestRaster(src);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);
    }
    src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, 6, new Point(5, 5));
    try
    {
      op.createCompatibleDestRaster(src);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);

View Full Code Here

    // ((width != height) && (width != height + 1))
    float[][] matrix = new float[][] {new float[] {1, 2, 3, 1, 5},
                                      new float[] {4, 5, 6, 1, 5},
                                      new float[] {7, 8, 9, 1, 5}};


    BandCombineOp op = new BandCombineOp(matrix, null);


    for (int i = 2; i < 6; i++)
      {
        Raster src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, i, new Point(5, 5));
        try
        {
          op.createCompatibleDestRaster(src);
          harness.check(false);
        }
        catch (IllegalArgumentException e)
        {
          harness.check(true);
        }
      }


    // Repeat the above test, but with too many rows instead of too few
    matrix = new float[][] {new float[] {1, 2, 3,},
                            new float[] {4, 5, 6,},
                            new float[] {2, 4, 6,},
                            new float[] {1, 3, 5,},
                            new float[] {7, 8, 9,}};


    op = new BandCombineOp(matrix, null);


    for (int i = 2; i < 6; i++)
      {
        Raster src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 25, 40, i, new Point(5, 5));
        try
        {
          op.createCompatibleDestRaster(src);
          harness.check(false);
        }
        catch (IllegalArgumentException e)
        {
          harness.check(true);

View Full Code Here

    //  This is a simple test; the BandCombineOp should not change the
    // dimensions of the raster
    
    float[][] matrix = new float[][] {{2, 7}};
    WritableRaster src = Raster.createBandedRaster(DataBuffer.TYPE_INT, 5, 5, 1, new Point(0,0));
    BandCombineOp op = new BandCombineOp(matrix, null);
    harness.check(op.getBounds2D(src), src.getBounds());
    
    // This should throw an exception, as the bands in the source do not
    // match the rows in the matrix
    /*
     * The spec says it *MAY* throw an exception; the ref. impl does not do so...

View Full Code Here

    
    //  This is a simple test; the BandCombineOp should not change the
    // geometry of the raster
    
    float[][] matrix = new float[][] {{2, 7}};
    BandCombineOp op = new BandCombineOp(matrix, null);
    Point2D dest = null;
    dest = op.getPoint2D(new Point2D.Double(3, 3), dest);
    harness.check(dest, new Point2D.Double(3, 3));
  }

View Full Code Here


    float[][] matrix = new float[][] {new float[]{1, 2, 3},
                                      new float[]{4, 5, 6},
                                      new float[]{7, 8, 9}};
                                      
    BandCombineOp op = new BandCombineOp(matrix, null);
    
    float[][] resultMatrix = op.getMatrix();
    float[][] expectedMatrix = new float[][] {new float[]{1, 2, 3, 0},
                                              new float[]{4, 5, 6, 0},
                                              new float[]{7, 8, 9, 0}};
      // The ref impl seems to add a column of zeros, so we test against that
      // for compatibility 
    
    if (expectedMatrix.length != resultMatrix.length)
      harness.check(false);
    else
      for (int i = 0; i < expectedMatrix.length; i++)
        harness.check(Arrays.equals(expectedMatrix[i], resultMatrix[i]));


    // This happens even if the (width == height + 1)
    matrix = new float[][] {new float[]{1, 2, 3, 4},
                            new float[]{4, 5, 6, 7},
                            new float[]{7, 8, 9, 1}};


    op = new BandCombineOp(matrix, null);


    resultMatrix = op.getMatrix();
    expectedMatrix = new float[][] {new float[]{1, 2, 3, 4, 0},
                                    new float[]{4, 5, 6, 7, 0},
                                    new float[]{7, 8, 9, 1, 0}};


    if (expectedMatrix.length != resultMatrix.length)

View Full Code Here

0 1 2 3 4 5

TOP

Related Classes of java.awt.image.BandCombineOp

ch.sahits.game.graphic.image.ImageSFXs

com.alee.graphics.filters.ShadowFilter

com.alkacon.simapi.filter.buffered.RaysFilter

com.alkacon.simapi.filter.buffered.ShadowFilter

gnu.testlet.java.awt.image.BandCombineOp.constructors

gnu.testlet.java.awt.image.BandCombineOp.createCompatibleDestRaster

gnu.testlet.java.awt.image.BandCombineOp.filter

gnu.testlet.java.awt.image.BandCombineOp.getBounds2D

gnu.testlet.java.awt.image.BandCombineOp.getPoint2D

magick4j.MagickImage

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.