Example usage for java.awt.image BufferedImage getRaster

Introduction

In this page you can find the example usage for java.awt.image BufferedImage getRaster.

Prototype

public WritableRaster getRaster() 

Source Link

Document

Returns the WritableRaster .

Usage

From source file:net.bioclipse.chart.ChartUtils.java

/**
 * Utility method for converting JFreeChart to an image
 * @param parent used for color correction 
 * @param chart the chart to be made into an image
 * @param width image width/*from  ww w  .  j  a v a2s .co m*/
 * @param height image height
 * @return SWT Image of the chart 
 */
public static Image createChartImage(Composite parent, JFreeChart chart, int width, int height) {
    // Color adjustment

    Color swtBackground = parent.getBackground();
    java.awt.Color awtBackground = new java.awt.Color(swtBackground.getRed(), swtBackground.getGreen(),
            swtBackground.getRed());
    chart.setBackgroundPaint(awtBackground);

    // Draw the chart in an AWT buffered image
    BufferedImage bufferedImage = chart.createBufferedImage(width, height, null);

    // Get the data buffer of the image
    DataBuffer buffer = bufferedImage.getRaster().getDataBuffer();
    DataBufferInt intBuffer = (DataBufferInt) buffer;

    // Copy the data from the AWT buffer to a SWT buffer
    PaletteData paletteData = new PaletteData(0x00FF0000, 0x0000FF00, 0x000000FF);
    ImageData imageData = new ImageData(width, height, 32, paletteData);
    for (int bank = 0; bank < intBuffer.getNumBanks(); bank++) {
        int[] bankData = intBuffer.getData(bank);
        imageData.setPixels(0, bank, bankData.length, bankData, 0);
    }

    // Create an SWT image
    return new Image(parent.getDisplay(), imageData);
}

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From source file:com.actelion.research.orbit.imageAnalysis.utils.ImageUtils.java

/**
 * Calculates and returns band histograms of a BufferedImage
 *
 * @param image/*from   w  w  w .j ava2 s  .c o  m*/
 * @return
 */
public static int[][] getChannelHistograms(BufferedImage image) {
    WritableRaster raster = image.getRaster();
    int[][] histograms = new int[raster
            .getNumBands()][(int) (Math.pow(2, image.getColorModel().getPixelSize()) - 1)];

    int width = image.getWidth();
    int height = image.getHeight();

    for (int row = 0; row < height; row++) {
        for (int col = 0; col < width; col++) {
            for (int band = 0; band < raster.getNumBands(); band++) {
                histograms[band][raster.getSample(col, row, band)]++;
            }
        }
    }

    return histograms;
}

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From source file:com.actelion.research.orbit.imageAnalysis.utils.ImageUtils.java

/**
 * Returns min and max intensities and percentiles 0.01, 0.05, 0.1, 0.9, 0.95, 0.99 of a BufferedImage.
 *
 * @param image//w  w w.j  av  a 2  s  .  co m
 * @return
 */
public static int[][] getMinMaxIntensitiesOfBI(BufferedImage image) {
    WritableRaster raster = image.getRaster();
    // per band: { min, 1%, 5%, 10%, 90%, 95%, 99%, max }
    int[][] intensities = new int[raster.getNumBands()][8];

    DescriptiveStatistics[] ds = new DescriptiveStatistics[raster.getNumBands()];
    for (int i = 0; i < raster.getNumBands(); i++)
        ds[i] = new DescriptiveStatistics();

    int width = image.getWidth();
    int height = image.getHeight();

    for (int row = 0; row < height; row++) {
        for (int col = 0; col < width; col++) {
            for (int band = 0; band < raster.getNumBands(); band++) {
                ds[band].addValue(raster.getSample(col, row, band));
            }
        }
    }

    for (int i = 0; i < ds.length; i++) {
        intensities[i][0] = (int) ds[i].getMin();
        intensities[i][1] = (int) ds[i].getPercentile(1);
        intensities[i][2] = (int) ds[i].getPercentile(5);
        intensities[i][3] = (int) ds[i].getPercentile(10);
        intensities[i][4] = (int) ds[i].getPercentile(90);
        intensities[i][5] = (int) ds[i].getPercentile(95);
        intensities[i][6] = (int) ds[i].getPercentile(99);
        intensities[i][7] = (int) ds[i].getMax();
    }
    return intensities;
}

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From source file:VASSAL.tools.image.tilecache.TileUtils.java

/**
 * Reads an image tile./*from ww w  .j a  va  2  s . c om*/
 *
 * @param in a stream containing the tile data
 * @return the tile image
 *
 * @throws IOException if the read fails
 */
public static BufferedImage read(InputStream in) throws IOException {
    ByteBuffer bb;

    // read the header
    final byte[] header = readHeader(in);
    bb = ByteBuffer.wrap(header);

    // validate the signature
    final byte[] sig = new byte[6];
    bb.get(sig);
    checkSignature(sig);

    // get the dimensions and type
    final int w = bb.getInt();
    final int h = bb.getInt();
    final int type = bb.getInt();

    // read the image data
    final byte[] cdata = IOUtils.toByteArray(in);

    // decompress the image data
    InputStream zin = null;
    try {
        zin = new GZIPInputStream(new ByteArrayInputStream(cdata));
        bb = ByteBuffer.wrap(IOUtils.toByteArray(zin));
        zin.close();
    } finally {
        IOUtils.closeQuietly(zin);
    }

    // build the image
    final BufferedImage img = new BufferedImage(w, h, type);

    // FIXME: This might decelerate the image? If so, then we should
    // make a copy.
    final DataBufferInt db = (DataBufferInt) img.getRaster().getDataBuffer();
    final int[] data = db.getData();

    final IntBuffer ib = bb.asIntBuffer();
    ib.get(data);

    /*
        if (ib.hasRemaining()) {
          // buffer contains garbage at the end!
          throw new IOException("found " + (4*ib.remaining()) + " more bytes!");
        }
    */

    return img;
}

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From source file:com.actelion.research.orbit.imageAnalysis.utils.ImageUtils.java

public static int[] getPercentileIntensity(BufferedImage image, double percentile) {
    WritableRaster raster = image.getRaster();
    int[] intensities = new int[raster.getNumBands()];

    DescriptiveStatistics[] ds = new DescriptiveStatistics[raster.getNumBands()];
    for (int i = 0; i < raster.getNumBands(); i++)
        ds[i] = new DescriptiveStatistics();

    int width = image.getWidth();
    int height = image.getHeight();

    for (int row = 0; row < height; row++) {
        for (int col = 0; col < width; col++) {
            for (int band = 0; band < raster.getNumBands(); band++) {
                ds[band].addValue(raster.getSample(col, row, band));
            }/*w  ww  .j  ava2s.c om*/
        }
    }

    for (int i = 0; i < ds.length; i++) {
        if (percentile == 0d)
            intensities[i] = (int) ds[i].getMin();
        else if (percentile == 100d)
            intensities[i] = (int) ds[i].getMax();
        else
            intensities[i] = (int) ds[i].getPercentile(percentile);
    }
    return intensities;
}

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From source file:app.utils.ImageUtilities.java

public static Image readImageFromFile(File imgFile) throws IOException {
    String imgName = imgFile.getName();
    BufferedImage img = ImageIO.read(imgFile);
    Pixel[][] pixels = new Pixel[img.getWidth()][img.getHeight()];
    for (int x = 0; x < img.getWidth(); x++) {
        for (int y = 0; y < img.getHeight(); y++) {
            int redValue = new Color(img.getRGB(x, y)).getRed();
            int greenValue = new Color(img.getRGB(x, y)).getGreen();
            int blueValue = new Color(img.getRGB(x, y)).getBlue();
            pixels[x][y] = new Pixel(redValue, greenValue, blueValue);
        }/*from w w w. java  2s.c o  m*/
    }
    return new Image(imgName, pixels, img.getRaster().getNumDataElements());
}

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From source file:it.geosolutions.imageio.plugins.nitronitf.ImageIOUtils.java

/**
 * Utility method for creating a BufferedImage from a source raster Currently only Float->Byte and Byte->Byte are supported. Will throw an
 * {@link UnsupportedOperationException} if the conversion is not supported.
 * /*from w w w  .  j  av  a2 s.  c  o  m*/
 * @param raster
 * @param imageType
 * @return
 */
public static BufferedImage rasterToBufferedImage(Raster raster, ImageTypeSpecifier imageType) {
    if (imageType == null) {
        if (raster.getDataBuffer().getDataType() == DataBuffer.TYPE_BYTE)
            imageType = ImageTypeSpecifier.createGrayscale(8, DataBuffer.TYPE_BYTE, false);
        else
            throw new IllegalArgumentException("unable to dynamically determine the imageType");
    }
    // create a new buffered image, for display
    BufferedImage bufImage = imageType.createBufferedImage(raster.getWidth(), raster.getHeight());

    if (raster.getDataBuffer().getDataType() == DataBuffer.TYPE_USHORT
            && bufImage.getRaster().getDataBuffer().getDataType() == DataBuffer.TYPE_BYTE) {
        // convert short pixels to bytes
        short[] shortData = ((DataBufferUShort) raster.getDataBuffer()).getData();
        byte[] byteData = ((DataBufferByte) bufImage.getWritableTile(0, 0).getDataBuffer()).getData();
        ImageIOUtils.shortToByteBuffer(shortData, byteData, 1, raster.getNumBands());
    } else if (raster.getDataBuffer().getDataType() == DataBuffer.TYPE_FLOAT
            && bufImage.getRaster().getDataBuffer().getDataType() == DataBuffer.TYPE_BYTE) {
        // convert float pixels to bytes
        float[] floatData = ((DataBufferFloat) raster.getDataBuffer()).getData();
        byte[] byteData = ((DataBufferByte) bufImage.getWritableTile(0, 0).getDataBuffer()).getData();
        ImageIOUtils.floatToByteBuffer(floatData, byteData, 1, raster.getNumBands());
    } else if (raster.getDataBuffer().getDataType() == DataBuffer.TYPE_DOUBLE
            && bufImage.getRaster().getDataBuffer().getDataType() == DataBuffer.TYPE_BYTE) {
        // convert double pixels to bytes
        double[] doubleData = ((DataBufferDouble) raster.getDataBuffer()).getData();
        byte[] byteData = ((DataBufferByte) bufImage.getWritableTile(0, 0).getDataBuffer()).getData();
        ImageIOUtils.doubleToByteBuffer(doubleData, byteData, 1, raster.getNumBands());
    } else if ((raster.getDataBuffer().getDataType() == DataBuffer.TYPE_BYTE
            && bufImage.getRaster().getDataBuffer().getDataType() == DataBuffer.TYPE_BYTE)
            || (raster.getDataBuffer().getDataType() == DataBuffer.TYPE_USHORT
                    && bufImage.getRaster().getDataBuffer().getDataType() == DataBuffer.TYPE_USHORT)
            || (raster.getDataBuffer().getDataType() == DataBuffer.TYPE_SHORT
                    && bufImage.getRaster().getDataBuffer().getDataType() == DataBuffer.TYPE_SHORT)) {
        bufImage.setData(raster);
    } else {
        throw new UnsupportedOperationException(
                "Unable to convert raster type to bufferedImage type: " + raster.getDataBuffer().getDataType()
                        + " ==> " + bufImage.getRaster().getDataBuffer().getDataType());
    }
    return bufImage;
}

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From source file:org.polymap.styler.helper.ImageHelper.java

public static ImageData convertToSWT(BufferedImage bufferedImage) {
    if (bufferedImage.getColorModel() instanceof DirectColorModel) {
        DirectColorModel colorModel = (DirectColorModel) bufferedImage.getColorModel();
        PaletteData palette = new PaletteData(colorModel.getRedMask(), colorModel.getGreenMask(),
                colorModel.getBlueMask());
        ImageData data = new ImageData(bufferedImage.getWidth(), bufferedImage.getHeight(),
                colorModel.getPixelSize(), palette);
        WritableRaster raster = bufferedImage.getRaster();
        int[] pixelArray = new int[raster.getNumBands()];
        for (int y = 0; y < data.height; y++) {
            for (int x = 0; x < data.width; x++) {
                raster.getPixel(x, y, pixelArray);
                int pixel = palette.getPixel(new RGB(pixelArray[0], pixelArray[1], pixelArray[2]));
                data.setPixel(x, y, pixel);
            }/*w  ww  .j av a2 s. co  m*/
        }
        return data;
    } else if (bufferedImage.getColorModel() instanceof IndexColorModel) {
        IndexColorModel colorModel = (IndexColorModel) bufferedImage.getColorModel();
        int size = colorModel.getMapSize();
        byte[] reds = new byte[size];
        byte[] greens = new byte[size];
        byte[] blues = new byte[size];
        colorModel.getReds(reds);
        colorModel.getGreens(greens);
        colorModel.getBlues(blues);
        RGB[] rgbs = new RGB[size];
        for (int i = 0; i < rgbs.length; i++) {
            rgbs[i] = new RGB(reds[i] & 0xFF, greens[i] & 0xFF, blues[i] & 0xFF);
        }
        PaletteData palette = new PaletteData(rgbs);
        ImageData data = new ImageData(bufferedImage.getWidth(), bufferedImage.getHeight(),
                colorModel.getPixelSize(), palette);
        data.transparentPixel = colorModel.getTransparentPixel();
        WritableRaster raster = bufferedImage.getRaster();
        int[] pixelArray = new int[1];
        for (int y = 0; y < data.height; y++) {
            for (int x = 0; x < data.width; x++) {
                raster.getPixel(x, y, pixelArray);
                data.setPixel(x, y, pixelArray[0]);
            }
        }
        return data;
    }
    return null;
}

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From source file:org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.java

private static BufferedImage applyColorKeyMask(BufferedImage image, BufferedImage mask) throws IOException {
    int width = image.getWidth();
    int height = image.getHeight();

    // compose to ARGB
    BufferedImage masked = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);

    WritableRaster src = image.getRaster();
    WritableRaster dest = masked.getRaster();
    WritableRaster alpha = mask.getRaster();

    float[] rgb = new float[3];
    float[] rgba = new float[4];
    float[] alphaPixel = null;
    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++) {
            src.getPixel(x, y, rgb);/*  ww  w .j  a va2  s.c  om*/

            rgba[0] = rgb[0];
            rgba[1] = rgb[1];
            rgba[2] = rgb[2];
            alphaPixel = alpha.getPixel(x, y, alphaPixel);
            rgba[3] = 255 - alphaPixel[0];

            dest.setPixel(x, y, rgba);
        }
    }

    return masked;
}

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From source file:com.actelion.research.orbit.imageAnalysis.utils.ImageUtils.java

/**
 * scales bands to min = 0 & max = 2^8 or 2^16
 *
 * @param image/*  ww  w. jav a  2 s .  co  m*/
 * @param min   int[] containing minima per band
 * @param max
 * @return
 */
public static BufferedImage scaleIntensities(BufferedImage image, int[] min, int[] max)
        throws IllegalArgumentException {
    WritableRaster raster = image.getRaster();

    if ((min.length != max.length) || min.length != raster.getNumBands())
        throw new IllegalArgumentException(
                "Please ensure consistency of min and max arrays and number of bands in image");

    int width = image.getWidth();
    int height = image.getHeight();

    for (int row = 0; row < height; row++) {
        for (int col = 0; col < width; col++) {
            for (int band = 0; band < raster.getNumBands(); band++) {
                int pixel = raster.getSample(col, row, band);
                if (pixel < min[band])
                    pixel = min[band];
                if (pixel > max[band])
                    pixel = max[band];
                pixel = ((int) (((((double) pixel - min[band]) / (max[band] - min[band]))
                        * ((int) Math.pow(2, image.getColorModel().getPixelSize()) - 1)) + 0.5));
                raster.setSample(col, row, band, pixel);
            }
        }
    }

    return image;
}

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