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:org.openmrs.api.ObsServiceTest.java

/**
 * @throws IOException/*  w w w. j  av  a2s.c o  m*/
 * @see ObsService#getComplexObs(Integer,String)
 */
@Test
public void getComplexObs_shouldNotFailWithNullView() throws IOException {
    executeDataSet(COMPLEX_OBS_XML);
    // create gif file
    // make sure the file isn't there to begin with
    AdministrationService as = Context.getAdministrationService();
    File complexObsDir = OpenmrsUtil.getDirectoryInApplicationDataDirectory(
            as.getGlobalProperty(OpenmrsConstants.GLOBAL_PROPERTY_COMPLEX_OBS_DIR));
    File createdFile = new File(complexObsDir, "openmrs_logo_small.gif");
    if (createdFile.exists())
        createdFile.delete();
    int width = 10;
    int height = 10;
    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
    WritableRaster raster = image.getRaster();
    int[] colorArray = new int[3];
    int h = 255;
    for (int i = 0; i < width; i++) {
        for (int j = 0; j < height; j++) {
            if (i == 0 || j == 0 || i == width - 1 || j == height - 1
                    || (i > width / 3 && i < 2 * width / 3) && (j > height / 3 && j < 2 * height / 3)) {
                colorArray[0] = h;
                colorArray[1] = h;
                colorArray[2] = 0;
            } else {
                colorArray[0] = 0;
                colorArray[1] = 0;
                colorArray[2] = h;
            }
            raster.setPixel(i, j, colorArray);
        }
    }
    ImageIO.write(image, "gif", createdFile);
    // end create gif file
    ObsService os = Context.getObsService();

    os.getComplexObs(44, null);
    // delete gif file
    // we always have to delete this inside the same unit test because it is
    // outside the
    // database and hence can't be "rolled back" like everything else
    createdFile.delete();
}

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From source file:org.openmrs.api.ObsServiceTest.java

/**
 * @throws IOException//from   w  w w  .ja va 2  s.co  m
 * @see ObsService#getComplexObs(Integer,String)
 */
@Test
public void getComplexObs_shouldFillInComplexDataObjectForComplexObs() throws IOException {
    executeDataSet(COMPLEX_OBS_XML);
    // create gif file
    // make sure the file isn't there to begin with
    AdministrationService as = Context.getAdministrationService();
    File complexObsDir = OpenmrsUtil.getDirectoryInApplicationDataDirectory(
            as.getGlobalProperty(OpenmrsConstants.GLOBAL_PROPERTY_COMPLEX_OBS_DIR));
    File createdFile = new File(complexObsDir, "openmrs_logo_small.gif");
    if (createdFile.exists())
        createdFile.delete();
    int width = 10;
    int height = 10;
    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
    WritableRaster raster = image.getRaster();
    int[] colorArray = new int[3];
    int h = 255;
    for (int i = 0; i < width; i++) {
        for (int j = 0; j < height; j++) {
            if (i == 0 || j == 0 || i == width - 1 || j == height - 1
                    || (i > width / 3 && i < 2 * width / 3) && (j > height / 3 && j < 2 * height / 3)) {
                colorArray[0] = h;
                colorArray[1] = h;
                colorArray[2] = 0;
            } else {
                colorArray[0] = 0;
                colorArray[1] = 0;
                colorArray[2] = h;
            }
            raster.setPixel(i, j, colorArray);
        }
    }
    ImageIO.write(image, "gif", createdFile);
    // end create gif file
    ObsService os = Context.getObsService();

    Obs complexObs = os.getComplexObs(44, ComplexObsHandler.RAW_VIEW);

    Assert.assertNotNull(complexObs);
    Assert.assertTrue(complexObs.isComplex());
    Assert.assertNotNull(complexObs.getValueComplex());
    Assert.assertNotNull(complexObs.getComplexData());
    // delete gif file
    // we always have to delete this inside the same unit test because it is
    // outside the
    // database and hence can't be "rolled back" like everything else
    createdFile.delete();
}

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From source file:lucee.runtime.img.Image.java

private BufferedImage jpgImage(BufferedImage src) {
    int w = src.getWidth();
    int h = src.getHeight();
    SampleModel srcSM = src.getSampleModel();
    WritableRaster srcWR = src.getRaster();
    java.awt.image.DataBuffer srcDB = srcWR.getDataBuffer();

    ColorModel rgb = new DirectColorModel(32, 0xff0000, 65280, 255);
    int[] bitMasks = new int[] { 0xff0000, 65280, 255 };

    SampleModel csm = new SinglePixelPackedSampleModel(3, w, h, bitMasks);
    int data[] = new int[w * h];
    for (int i = 0; i < h; i++) {
        for (int j = 0; j < w; j++) {
            int pix[] = null;
            int sample[] = srcSM.getPixel(j, i, pix, srcDB);
            if (sample[3] == 0 && sample[2] == 0 && sample[1] == 0 && sample[0] == 0)
                data[i * w + j] = 0xffffff;
            else/*from  w w w .  jav a2  s.c o  m*/
                data[i * w + j] = sample[0] << 16 | sample[1] << 8 | sample[2];
        }

    }

    java.awt.image.DataBuffer db = new DataBufferInt(data, w * h * 3);
    WritableRaster wr = Raster.createWritableRaster(csm, db, new Point(0, 0));
    return new BufferedImage(rgb, wr, false, null);
}

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From source file:com.simiacryptus.mindseye.lang.Tensor.java

/**
 * To gray png buffered png.// w  w  w. j a  va  2s .com
 *
 * @param band the band
 * @return the buffered png
 */
@Nonnull
public BufferedImage toGrayImage(final int band) {
    final int width = getDimensions()[0];
    final int height = getDimensions()[1];
    @Nonnull
    final BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_BYTE_GRAY);
    for (int x = 0; x < width; x++) {
        for (int y = 0; y < height; y++) {
            final double v = get(x, y, band);
            image.getRaster().setSample(x, y, 0, v < 0 ? 0 : v > 255 ? 255 : v);
        }
    }
    return image;
}

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From source file:org.opencastproject.videosegmenter.impl.jmf.ImageComparator.java

/**
 * Returns <code>true</code> if <code>image</code> differs from <code>currentImage</code>. In order to be treated a
 * different image, the <code>rgb</code> values of at least <code>changesThreshold</code> pixels must have changed.
 * <p>/*from w w w . j  a v  a  2 s.c  om*/
 * Note that <code>image</code> might contain an altered version of the image, which will facilitate in the comparison
 * next time when <code>image</code> is <code>currentImage</code>.
 * 
 * @param previousImage
 *          the previous image
 * @param image
 *          the new image
 * @param timestamp
 *          the image timestamp
 * 
 * @return <code>true</code> if the two images are different
 */
public boolean isDifferent(BufferedImage previousImage, BufferedImage image, long timestamp) {
    boolean differsFromCurrentScene = false;
    BufferedImage edgeImage = getEdgedImage(image);

    if (previousImage == null) {
        differsFromCurrentScene = true;
        logger.debug("First segment started");
    } else if (previousImage.getWidth() != image.getWidth() || previousImage.getHeight() != image.getHeight()) {
        differsFromCurrentScene = true;
        String currentResolution = previousImage.getWidth() + "x" + previousImage.getHeight();
        String newResolution = image.getWidth() + "x" + image.getHeight();
        logger.warn("Resolution change detected ({} -> {})", currentResolution, newResolution);
    } else {
        int changes = 0;
        long pixels = image.getWidth() * image.getHeight();
        long changesThresholdPixels = (long) (pixels * changesThreshold);

        imagecomparison: for (int x = 0; x < image.getWidth(); x++) {
            for (int y = 0; y < image.getHeight(); y++) {
                if (edgeImage.getRGB(x, y) != previousImage.getRGB(x, y)) {
                    changes++;
                    if (changes > changesThresholdPixels) {
                        differsFromCurrentScene = true;
                        if (!collectStatistics)
                            break imagecomparison;
                    }
                }
            }
        }

        float percentage = ((float) changes) / ((float) pixels);
        if (differsFromCurrentScene)
            logger.debug("Differences found at {} s ({} change to previous image)", timestamp,
                    percentageNf.format(percentage));
        else
            logger.debug("Found {} changes at {} s to the previous frame", percentageNf.format(percentage),
                    timestamp);

        comparisons++;
        totalChanges += percentage;
    }

    // Write the images to disk for debugging and verification purposes
    if (tempDir != null) {
        try {
            FileUtils.forceMkdir(tempDir);
            ImageIO.write(image, "jpg", new File(tempDir, "image-" + timestamp + ".jpg"));
            ImageIO.write(edgeImage, "jpg", new File(tempDir, "image-" + timestamp + "-edged.jpg"));
        } catch (IOException e) {
            logger.warn("Error writing intermediary images to {}" + tempDir);
            e.printStackTrace();
        }
    }

    // Copy the resulting image for further reference to the original
    image.getRaster().setRect(edgeImage.getData());

    return differsFromCurrentScene;
}

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From source file:ucar.unidata.idv.ui.ImageGenerator.java

private static boolean isNotBlank(BufferedImage image) {
    // yes, i know this is bonkers. yes, the next step is to try sampling
    // to avoid iterating over each pixel.
    // tests on my linux machine typically find a non-blank pixel within the
    // first 100 iterations, and fewer than 5 retries to get a non-blank
    // *image* (typically 1-2 retries though)
    DataBuffer buf = image.getRaster().getDataBuffer();
    ColorModel model = image.getColorModel();
    boolean result = false;
    int i;//from w  w  w  .  j  a  v  a  2s .  c om
    for (i = 0; i < buf.getSize(); i++) {
        // it's apparently not sufficient to simply grab the value directly;
        // Linux seems to store the "blank" value as -16777216 (-2^24, which
        // makes a lot of sense for images), while on OS X the blank value
        // is simply 0. i suspect the getRGB stuff is a candidate for
        // inlining by the JIT, but profiling is needed.
        int rgb = model.getRGB(buf.getElem(i));
        if (rgb != -16777216) {
            logger.trace("found non-blank value '{}' at index {}", rgb, i);
            result = true;
            break;
        }
    }
    logger.trace("{} iterations to return {}", i, result);
    return result;
}

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