Example usage for javax.imageio ImageReader getStreamMetadata

Introduction

In this page you can find the example usage for javax.imageio ImageReader getStreamMetadata.

Prototype

public abstract IIOMetadata getStreamMetadata() throws IOException;

Source Link

Document

Returns an IIOMetadata object representing the metadata associated with the input source as a whole (i.e., not associated with any particular image), or null if the reader does not support reading metadata, is set to ignore metadata, or if no metadata is available.

Usage

From source file:com.occamlab.te.parsers.ImageParser.java

private static Document parse(InputStream source, Element instruction, PrintWriter logger) throws Exception {
    ImageReader reader;
    try {//  w  w  w . j  av  a2s .  c  om
        ImageInputStream iis = ImageIO.createImageInputStream(source);
        reader = ImageIO.getImageReaders(iis).next();
        reader.setInput(iis);
    } catch (Exception e) {
        logger.println("No image handlers available for the data stream. " + e.getMessage());
        throw e;
    }

    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    DocumentBuilder db = dbf.newDocumentBuilder();
    Document doc = db.newDocument();

    TransformerFactory tf = TransformerFactory.newInstance();
    Transformer t = tf.newTransformer();
    t.transform(new DOMSource(instruction), new DOMResult(doc));

    Element new_instruction = doc.getDocumentElement();

    int framesRead = 0;
    boolean containsFrames = false;
    Element framesElement = null;
    Element metadataElement = null;

    NodeList nodes = new_instruction.getChildNodes();
    for (int i = 0; i < nodes.getLength(); i++) {
        Node node = nodes.item(i);
        if (node.getNodeType() == Node.ELEMENT_NODE) {
            // System.out.println(node.getLocalName());
            if (node.getLocalName().equals("type")) {
                node.setTextContent(reader.getFormatName().toLowerCase());
            } else if (node.getLocalName().equals("frames")) {
                framesElement = (Element) node;
                containsFrames = true;
            } else if (node.getLocalName().equals("metadata")) {
                metadataElement = (Element) node;
            } else if (node.getLocalName().equals("frame")) {
                int frame;
                String frameStr = ((Element) node).getAttribute("num");
                if (frameStr.length() == 0) {
                    frame = framesRead;
                    framesRead++;
                    ((Element) node).setAttribute("num", Integer.toString(frame));
                } else {
                    frame = Integer.parseInt(frameStr);
                    framesRead = frame + 1;
                }
                processFrame(reader, frame, node.getChildNodes(), logger);
                containsFrames = true;
            }
        }
    }

    if (containsFrames) {
        if (metadataElement != null) {
            IIOMetadata metadata = reader.getStreamMetadata();
            if (metadata != null) {
                String format = metadataElement.getAttribute("format");
                if (format.length() == 0) {
                    format = metadata.getNativeMetadataFormatName();
                }
                Node tree = metadata.getAsTree(format);
                t.transform(new DOMSource(tree), new DOMResult(metadataElement));
            }
        }
        if (framesElement != null) {
            boolean allowSearch = !reader.isSeekForwardOnly();
            int frames = reader.getNumImages(allowSearch);
            if (frames == -1) {
                try {
                    while (true) {
                        reader.read(framesRead);
                        framesRead++;
                    }
                } catch (Exception e) {
                    jlogger.log(Level.SEVERE, "", e);

                    frames = framesRead + 1;
                }
            }
            framesElement.setTextContent(Integer.toString(frames));
        }
    } else {
        processFrame(reader, 0, nodes, logger);
        framesRead = 1;
    }

    // t.transform(new DOMSource(doc), new StreamResult(System.out));
    return doc;
}

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From source file:org.dcm4che2.tool.dcm2dcm.Dcm2Dcm.java

/**
 * Recodes the images from the source transfer syntax, as read from the src
 * file, to the specified destination syntax.
 *///from   www .  j a  va 2  s . c om
public void recodeImages(File src, File dest) throws IOException {
    ImageReader reader = new DicomImageReaderSpi().createReaderInstance();
    ImageWriter writer = new DicomImageWriterSpi().createWriterInstance();

    DicomStreamMetaData writeMeta = (DicomStreamMetaData) writer.getDefaultStreamMetadata(null);

    DicomObject ds;
    int frames;

    FileImageOutputStream output = null;

    try {
        FileImageInputStream input = new FileImageInputStream(src);

        try {
            reader.setInput(input);
            if (dest.exists())
                dest.delete();
            output = new FileImageOutputStream(dest);
            writer.setOutput(output);
            DicomStreamMetaData streamMeta = (DicomStreamMetaData) reader.getStreamMetadata();
            ds = streamMeta.getDicomObject();

            DicomObject newDs = new BasicDicomObject();
            ds.copyTo(newDs);
            writeMeta.setDicomObject(newDs);
            frames = ds.getInt(Tag.NumberOfFrames, 1);
            newDs.putString(Tag.TransferSyntaxUID, VR.UI, destinationSyntax.uid());
            newDs.putString(Tag.ImplementationClassUID, VR.UI, Implementation.classUID());
            newDs.putString(Tag.ImplementationVersionName, VR.SH, Implementation.versionName());
            if (overwriteObject != null) {
                overwriteObject.copyTo(newDs);
            }
        } finally {
            reader.dispose();
        }
        writer.prepareWriteSequence(writeMeta);
        for (int i = 0; i < frames; i++) {
            FileInputStream inputStream = new FileInputStream(src);
            try {
                WritableRaster r = (WritableRaster) readRaster(inputStream, i);

                ColorModel cm = ColorModelFactory.createColorModel(ds);
                BufferedImage bi = new BufferedImage(cm, r, false, null);
                IIOImage iioimage = new IIOImage(bi, null, null);
                writer.writeToSequence(iioimage, null);
            } catch (NoSuchFieldException ex) {
                System.err.println(ex.toString());
            } catch (IllegalAccessException ex) {
                System.err.println(ex.toString());
            } finally {
                inputStream.close();
            }
        }
        writer.endWriteSequence();
    } finally {
        if (output != null) {
            output.close();
        }
    }
}

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From source file:org.psystems.dicomweb.Dcm2Dcm.java

/**
 * Recodes the images from the source transfer syntax, as read from the src
 * file, to the specified destination syntax.
 *//*w  w w .j av a  2  s  .  co  m*/
public void recodeImages(File src, File dest) throws IOException {

    ImageReader reader = new DicomImageReaderSpi().createReaderInstance();
    ImageWriter writer = new DicomImageWriterSpi().createWriterInstance();
    FileImageInputStream input = new FileImageInputStream(src);
    reader.setInput(input);
    if (dest.exists())
        dest.delete();
    FileImageOutputStream output = new FileImageOutputStream(dest);
    writer.setOutput(output);
    DicomStreamMetaData streamMeta = (DicomStreamMetaData) reader.getStreamMetadata();
    DicomObject ds = streamMeta.getDicomObject();
    DicomStreamMetaData writeMeta = (DicomStreamMetaData) writer.getDefaultStreamMetadata(null);
    DicomObject newDs = new BasicDicomObject();
    ds.copyTo(newDs);
    writeMeta.setDicomObject(newDs);
    int frames = ds.getInt(Tag.NumberOfFrames, 1);
    LookupTable lut = prepareBitStrip(writeMeta, reader);
    newDs.putString(Tag.TransferSyntaxUID, VR.UI, destinationSyntax.uid());
    if (overwriteObject != null) {
        overwriteObject.copyTo(newDs);
    }
    writer.prepareWriteSequence(writeMeta);
    for (int i = 0; i < frames; i++) {
        WritableRaster r = (WritableRaster) reader.readRaster(i, null);
        ColorModel cm = ColorModelFactory.createColorModel(ds);
        BufferedImage bi = new BufferedImage(cm, r, false, null);
        if (lut != null) {
            lut.lookup(bi.getRaster(), bi.getRaster());
        }
        IIOImage iioimage = new IIOImage(bi, null, null);
        writer.writeToSequence(iioimage, null);
    }
    writer.endWriteSequence();
    output.close();
    input.close();
}

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From source file:org.psystems.dicomweb.Dcm2DcmCopy.java

/**
 * Recodes the images from the source transfer syntax, as read from the src
 * file, to the specified destination syntax.
 *///  ww w . j a va  2 s. c o m
public void recodeImages(File src, File dest) throws IOException {
    ImageReader reader = new DicomImageReaderSpi().createReaderInstance();
    ImageWriter writer = new DicomImageWriterSpi().createWriterInstance();
    FileImageInputStream input = new FileImageInputStream(src);
    reader.setInput(input);
    if (dest.exists())
        dest.delete();
    FileImageOutputStream output = new FileImageOutputStream(dest);
    writer.setOutput(output);
    DicomStreamMetaData streamMeta = (DicomStreamMetaData) reader.getStreamMetadata();
    DicomObject ds = streamMeta.getDicomObject();
    DicomStreamMetaData writeMeta = (DicomStreamMetaData) writer.getDefaultStreamMetadata(null);
    DicomObject newDs = new BasicDicomObject();
    ds.copyTo(newDs);
    writeMeta.setDicomObject(newDs);
    int frames = ds.getInt(Tag.NumberOfFrames, 1);
    LookupTable lut = prepareBitStrip(writeMeta, reader);
    newDs.putString(Tag.TransferSyntaxUID, VR.UI, destinationSyntax.uid());
    if (overwriteObject != null) {
        overwriteObject.copyTo(newDs);
    }
    writer.prepareWriteSequence(writeMeta);
    for (int i = 0; i < frames; i++) {
        WritableRaster r = (WritableRaster) reader.readRaster(i, null);
        ColorModel cm = ColorModelFactory.createColorModel(ds);
        BufferedImage bi = new BufferedImage(cm, r, false, null);
        if (lut != null) {
            lut.lookup(bi.getRaster(), bi.getRaster());
        }
        IIOImage iioimage = new IIOImage(bi, null, null);
        writer.writeToSequence(iioimage, null);
    }
    writer.endWriteSequence();
    output.close();
    input.close();
}

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