Examples with IIOMetadata javax.imageio.metadata.IIOMetadata used on opensource projects

Example 71 with IIOMetadata

use of javax.imageio.metadata.IIOMetadata in project tess4j by nguyenq.

the class ImageIOHelper method setDPIViaAPI.

/**
 * Set DPI using API.
 *
 * @param imageMetadata original IIOMetadata
 * @param dpiX horizontal resolution
 * @param dpiY vertical resolution
 * @return modified IIOMetadata
 * @throws IIOInvalidTreeException
 */
private static IIOMetadata setDPIViaAPI(IIOMetadata imageMetadata, int dpiX, int dpiY) throws IIOInvalidTreeException {
    // Derive the TIFFDirectory from the metadata.
    TIFFDirectory dir = TIFFDirectory.createFromMetadata(imageMetadata);
    // Get {X,Y}Resolution tags.
    BaselineTIFFTagSet base = BaselineTIFFTagSet.getInstance();
    TIFFTag tagXRes = base.getTag(BaselineTIFFTagSet.TAG_X_RESOLUTION);
    TIFFTag tagYRes = base.getTag(BaselineTIFFTagSet.TAG_Y_RESOLUTION);
    // Create {X,Y}Resolution fields.
    TIFFField fieldXRes = new TIFFField(tagXRes, TIFFTag.TIFF_RATIONAL, 1, new long[][] { { dpiX, 1 } });
    TIFFField fieldYRes = new TIFFField(tagYRes, TIFFTag.TIFF_RATIONAL, 1, new long[][] { { dpiY, 1 } });
    // Append {X,Y}Resolution fields to directory.
    dir.addTIFFField(fieldXRes);
    dir.addTIFFField(fieldYRes);
    // Convert to metadata object.
    IIOMetadata metadata = dir.getAsMetadata();
    // Add other metadata.
    IIOMetadataNode root = new IIOMetadataNode("javax_imageio_1.0");
    IIOMetadataNode horiz = new IIOMetadataNode("HorizontalPixelSize");
    horiz.setAttribute("value", Double.toString(25.4f / dpiX));
    IIOMetadataNode vert = new IIOMetadataNode("VerticalPixelSize");
    vert.setAttribute("value", Double.toString(25.4f / dpiY));
    IIOMetadataNode dim = new IIOMetadataNode("Dimension");
    dim.appendChild(horiz);
    dim.appendChild(vert);
    root.appendChild(dim);
    metadata.mergeTree("javax_imageio_1.0", root);
    return metadata;
}

Example 72 with IIOMetadata

use of javax.imageio.metadata.IIOMetadata in project tess4j by nguyenq.

the class ImageIOHelper method getImageByteBuffer.

/**
 * Gets pixel data of an <code>RenderedImage</code> object.
 *
 * @param image an <code>RenderedImage</code> object
 * @return a byte buffer of pixel data
 * @throws IOException
 */
public static ByteBuffer getImageByteBuffer(RenderedImage image) throws IOException {
    // Set up the writeParam
    TIFFImageWriteParam tiffWriteParam = new TIFFImageWriteParam(Locale.US);
    tiffWriteParam.setCompressionMode(ImageWriteParam.MODE_DISABLED);
    // Get tif writer and set output to file
    Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(TIFF_FORMAT);
    if (!writers.hasNext()) {
        throw new RuntimeException(JAI_IMAGE_WRITER_MESSAGE);
    }
    ImageWriter writer = writers.next();
    // Get the stream metadata
    IIOMetadata streamMetadata = writer.getDefaultStreamMetadata(tiffWriteParam);
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    ImageOutputStream ios = ImageIO.createImageOutputStream(outputStream);
    writer.setOutput(ios);
    writer.write(streamMetadata, new IIOImage(image, null, null), tiffWriteParam);
    // writer.write(image);
    writer.dispose();
    // ImageIO.write(image, "tiff", ios); // this can be used in lieu of writer
    ios.seek(0);
    BufferedImage bi = ImageIO.read(ios);
    return convertImageData(bi);
}

Example 73 with IIOMetadata

use of javax.imageio.metadata.IIOMetadata in project tess4j by nguyenq.

the class ImageIOHelper method mergeTiff.

/**
 * Merges multiple images into one multi-page TIFF image.
 *
 * @param imageList a list of <code>IIOImage</code> objects
 * @param outputTiff the output TIFF file
 * @param compressionType valid values: LZW, CCITT T.6, PackBits
 * @throws IOException
 */
public static void mergeTiff(List<IIOImage> imageList, File outputTiff, String compressionType) throws IOException {
    if (imageList == null || imageList.isEmpty()) {
        // if no image
        return;
    }
    Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(TIFF_FORMAT);
    if (!writers.hasNext()) {
        throw new RuntimeException(JAI_IMAGE_WRITER_MESSAGE);
    }
    ImageWriter writer = writers.next();
    // Set up the writeParam
    TIFFImageWriteParam tiffWriteParam = new TIFFImageWriteParam(Locale.US);
    // tiffWriteParam.setCompressionMode(ImageWriteParam.MODE_DISABLED); // comment out to preserve original sizes
    if (compressionType != null) {
        tiffWriteParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
        tiffWriteParam.setCompressionType(compressionType);
    }
    // Get the stream metadata
    IIOMetadata streamMetadata = writer.getDefaultStreamMetadata(tiffWriteParam);
    ImageOutputStream ios = ImageIO.createImageOutputStream(outputTiff);
    writer.setOutput(ios);
    int dpiX = 300;
    int dpiY = 300;
    for (IIOImage iioImage : imageList) {
        // Get the default image metadata.
        ImageTypeSpecifier imageType = ImageTypeSpecifier.createFromRenderedImage(iioImage.getRenderedImage());
        IIOMetadata imageMetadata = writer.getDefaultImageMetadata(imageType, null);
        imageMetadata = setDPIViaAPI(imageMetadata, dpiX, dpiY);
        iioImage.setMetadata(imageMetadata);
    }
    IIOImage firstIioImage = imageList.remove(0);
    writer.write(streamMetadata, firstIioImage, tiffWriteParam);
    int i = 1;
    for (IIOImage iioImage : imageList) {
        writer.writeInsert(i++, iioImage, tiffWriteParam);
    }
    ios.close();
    writer.dispose();
}

Example 74 with IIOMetadata

use of javax.imageio.metadata.IIOMetadata in project CodenameOne by codenameone.

the class AnimationImpl method getPixelOffsets.

public static Point getPixelOffsets(ImageReader reader, int num) throws IOException {
    IIOMetadata meta = reader.getImageMetadata(num);
    Point point = new Point(-1, -1);
    Node root = meta.getAsTree("javax_imageio_1.0");
    // printNodeTree(root);
    for (Node c = root.getFirstChild(); c != null; c = c.getNextSibling()) {
        String name = c.getNodeName();
        if ("Dimension".equals(name)) {
            for (c = c.getFirstChild(); c != null; c = c.getNextSibling()) {
                name = c.getNodeName();
                if ("HorizontalPixelOffset".equals(name))
                    point.x = getValueAttribute(c);
                else if ("VerticalPixelOffset".equals(name))
                    point.y = getValueAttribute(c);
            }
            return point;
        }
    }
    return point;
}

Example 75 with IIOMetadata

use of javax.imageio.metadata.IIOMetadata in project CodenameOne by codenameone.

the class TimelineEditor method getDisposalMethod.

static String getDisposalMethod(ImageReader reader, int num) throws IOException {
    IIOMetadata meta = reader.getImageMetadata(num);
    Node parent = meta.getAsTree("javax_imageio_gif_image_1.0");
    // printNodeTree(parent);
    NodeList root = parent.getChildNodes();
    for (int iter = 0; iter < root.getLength(); iter++) {
        Node n = root.item(iter);
        if (n.getNodeName().equals("GraphicControlExtension")) {
            return n.getAttributes().getNamedItem("disposalMethod").getNodeValue();
        }
    }
    return null;
}