Examples with ParameterBlock java.awt.image.renderable.ParameterBlock used on opensource projects

Example 6 with ParameterBlock

use of java.awt.image.renderable.ParameterBlock in project vcell by virtualcell.

the class VFrap_OverlayImageDisplayJAI method makeAlpha.

/**
 * Method makeAlpha.
 * @param src RenderedImage
 * @param b float
 * @return RenderedImage
 */
private RenderedImage makeAlpha(RenderedImage src, float b) {
    // get color band
    int band = src.getColorModel().getNumColorComponents();
    // ignore alpha channel
    band = band > 3 ? 3 : band;
    // make alpha channel paramenter
    Byte[] bandValues = new Byte[band];
    for (int i = 0; i < band; i++) {
        bandValues[i] = new Byte((byte) (b * SCALE_MAX));
    }
    // make alpha channel paramenter
    ParameterBlock pb = new ParameterBlock();
    pb.add((float) src.getWidth());
    pb.add((float) src.getHeight());
    pb.add(bandValues);
    // make alpha channel
    return JAI.create("constant", pb, null);
}

Example 7 with ParameterBlock

use of java.awt.image.renderable.ParameterBlock in project imageio-ext by geosolutions-it.

the class JP2KakaduReadTest method displayStatistics.

public static void displayStatistics(boolean b, RenderedImage source) {
    PlanarImage img = JAI.create("extrema", source, null);
    double[] maximum = (double[]) img.getProperty("maximum");
    double[] minimum = (double[]) img.getProperty("minimum");
    ParameterBlock pb = (new ParameterBlock()).addSource(source);
    pb.add(null).add(1).add(1).add(new int[] { 65536 });
    pb.add(new double[] { minimum[0] }).add(new double[] { maximum[0] });
    PlanarImage dst = JAI.create("histogram", pb);
    Histogram h = (Histogram) dst.getProperty("hiStOgRam");
    JFrame frame = new HistogramFrame(h, b);
    frame.pack();
    frame.show();
}

Example 8 with ParameterBlock

use of java.awt.image.renderable.ParameterBlock in project imageio-ext by geosolutions-it.

the class ImageIOUtilities method visualizeRescaled.

/**
 * Visualize the image, after rescaling its values, given a threshold for
 * the ROI. This is useful to rescale an image coming from a source which
 * may contain noDataValues. The ROI threshold allows to set a minimal value
 * to be included in the computation of the future JAI extrema operation
 * used before the JAI rescale operation.
 *
 * @param image
 *                RenderedImage to visualize
 * @param title
 *                title for the frame
 * @param roiThreshold
 *                the threshold for the inner ROI
 */
static void visualizeRescaled(RenderedImage image, String title, int roiThreshold) {
    ROI roi = new ROI(image, roiThreshold);
    ParameterBlock pb = new ParameterBlock();
    // The source image
    pb.addSource(image);
    if (roi != null)
        // The region of the image to scan
        pb.add(roi);
    // Perform the extrema operation on the source image
    RenderedOp op = JAI.create("extrema", pb);
    // Retrieve both the maximum and minimum pixel value
    double[][] extrema = (double[][]) op.getProperty("extrema");
    final double[] scale = new double[] { (255) / (extrema[1][0] - extrema[0][0]) };
    final double[] offset = new double[] { ((255) * extrema[0][0]) / (extrema[0][0] - extrema[1][0]) };
    // Preparing to rescaling values
    ParameterBlock pbRescale = new ParameterBlock();
    pbRescale.add(scale);
    pbRescale.add(offset);
    pbRescale.addSource(image);
    RenderedOp rescaledImage = JAI.create("Rescale", pbRescale);
    ParameterBlock pbConvert = new ParameterBlock();
    pbConvert.addSource(rescaledImage);
    pbConvert.add(DataBuffer.TYPE_BYTE);
    RenderedOp destImage = JAI.create("format", pbConvert);
    visualize(destImage, title);
}

Example 9 with ParameterBlock

use of java.awt.image.renderable.ParameterBlock in project imageio-ext by geosolutions-it.

the class ImageReadPropertyGenerator method create.

/**
 * Type-safe convenience method for creating a {@link RenderedOp}
 * representing the "ImageRead" operation in rendered mode. The
 * method packs the parameters into a new <code>ParameterBlock</code>
 * and invokes {@link JAI#create(String,ParameterBlock,RenderingHints)}.
 *
 * @param input The input source.
 * @param imageChoice The index of the image to read.
 * @param readMetadata Whether metadata should be read if available.
 * @param readThumbnails Whether thumbnails should be read if available.
 * @param verifyInput Whether to verify the validity of the input source.
 * @param listeners EventListeners to be registered with the ImageReader.
 * @param locale The Locale for the ImageReader to use.
 * @param readParam Java Image I/O read parameter instance.
 * @param reader Java Image I/O reader instance.
 * @param hints Hints possibly including an <code>ImageLayout</code>.
 * @return an image derived from the input source.
 */
public static RenderedOp create(ImageInputStream input, Integer imageChoice, Boolean readMetadata, Boolean readThumbnails, Boolean verifyInput, EventListener[] listeners, Locale locale, EnhancedImageReadParam readParam, ImageReader reader, RenderingHints hints) {
    ParameterBlock args = new ParameterBlock();
    args.add(input);
    args.add(imageChoice);
    args.add(readMetadata);
    args.add(readThumbnails);
    args.add(verifyInput);
    args.add(listeners);
    args.add(locale);
    args.add(readParam);
    args.add(reader);
    return JAI.create(OPERATION_NAME, args, hints);
}

Example 10 with ParameterBlock

use of java.awt.image.renderable.ParameterBlock in project imageio-ext by geosolutions-it.

the class ImageReadPropertyGenerator method createRenderable.

/**
 * Type-safe convenience method for creating a {@link RenderableOp}
 * representing the "ImageRead" operation in renderable mode. The
 * method packs the parameters into a new <code>ParameterBlock</code>
 * and invokes
 * {@link JAI#createRenderable(String,ParameterBlock,RenderingHints)}.
 *
 * @param input The input source.
 * @param imageChoice The indices of the images to read.
 * @param readMetadata Whether metadata should be read if available.
 * @param readThumbnails Whether thumbnails should be read if available.
 * @param verifyInput Whether to verify the validity of the input source.
 * @param listeners EventListeners to be registered with the ImageReader.
 * @param locale The Locale for the ImageReader to use.
 * @param readParam Java Image I/O read parameter instance.
 * @param reader Java Image I/O reader instance.
 * @param hints Hints possibly including an <code>ImageLayout</code>.
 * @return an image capable of rendering an image from those in the
 * input source.
 */
public static RenderableOp createRenderable(ImageInputStream input, int[] imageChoice, Boolean readMetadata, Boolean readThumbnails, Boolean verifyInput, EventListener[] listeners, Locale locale, ImageReadParam readParam, ImageReader reader, RenderingHints hints) {
    ParameterBlock args = new ParameterBlock();
    args.add(input);
    args.add(imageChoice);
    args.add(readMetadata);
    args.add(readThumbnails);
    args.add(verifyInput);
    args.add(listeners);
    args.add(locale);
    args.add(readParam);
    args.add(reader);
    return JAI.createRenderable(OPERATION_NAME, args, hints);
}