Examples of javax.media.jai.PlanarImage

javax.media.jai.PlanarImage
sun.com/j2se/1.5.0/docs/guide/refobs/"> http://java.sun.com/j2se/1.5.0/docs/guide/refobs/ for more information. These classes include weak references that allow the Garbage Collector (GC) to collect objects they reference, setting the reference to null in the process.
The reference problem requires us to be careful about how we define the reachability of directed acyclic graph (DAG) nodes. If we were to allow nodes to be reached by arbitrary graph traversal, we would be unable to garbage collect any subgraphs of an active graph at all since any node may be reached from any other. Instead, we define the set of reachable nodes as those that may be accessed directly from a reference in user code, or that are the source (not sink) of a reachable node. Reachable nodes are always accessible, whether they are reached by traversing upwards or downwards in the DAG.
A DAG may also contain nodes that are not reachable, that is, they require a downward traversal at some point. For example, assume a node A is reachable, and a call to A.getSinks() yields a Vector containing a reference to a previously unreachable node B. The node B naturally becomes reachable by virtue of the new user reference pointing to it. However, if the user were to relinquish that reference, the node might be garbage collected, and a future call to A.getSinks() might no longer include B in its return value.
Because the set of sinks of a node is inherently unstable, only the getSinks method is provided for external access to the sink vector at a node. A hypothetical method such as getSink or getNumSinks would produce confusing results should a sink be garbage collected between that call and a subsequent call to getSinks. @see java.awt.image.RenderedImage @see java.lang.ref.Reference @see java.lang.ref.WeakReference @see ImageJAI @see OpImage @see RenderedImageAdapter @see SnapshotImage @see TiledImage

    /**
     * Return the number of bits per pixel in the source image.
     * Floating point images are denoted by -32 for float, or -64 for double.
     */
    public int getBitsPerPixel() {
        PlanarImage im = imageProcessor.getSourceImage();
        if (im != null) {
            SampleModel sm = im.getSampleModel();
            int dataType = sm.getDataType();
            int bitpix = sm.getSampleSize(0);
            if (dataType == DataBuffer.TYPE_FLOAT || dataType == DataBuffer.TYPE_DOUBLE) {
                return -bitpix;
            }

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            // try to extract the pixel value under the mouse and display it
            p = new Point2D.Double(e.getX(), e.getY());
            imageDisplay.getCoordinateConverter().screenToUserCoords(p, false);
            float pixel = imageDisplay.getPixelValue(p, 0);


            PlanarImage im = imageProcessor.getRescaledSourceImage();
            if (im != null) {
                SampleModel sampleModel = im.getSampleModel();
                if (sampleModel != null) {
//                    int dataType = sampleModel.getDataType();
                    if (pixel == imageProcessor.getBlank()) {
                        valueValue.setText("blank");
                    } else {

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    public int getImageWidth() {
        if (_fitsImage != null) {
            return _fitsImage.getRealWidth();
        }


        PlanarImage image = getImage();
        if (image != null) {
            return image.getWidth();
        }
        return 0;
    }

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    public int getImageHeight() {
        if (_fitsImage != null) {
            return _fitsImage.getRealHeight();
        }


        PlanarImage image = getImage();
        if (image != null) {
            return image.getHeight();
        }
        return 0;
    }

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            if (!_noInitWCS) {
                _wcs = null;
            }
        } else {            // after loading image
            _affineTransform = getAffineTransform();
            PlanarImage im = getImage();
            if (im != null) {
                // Check if it is a FITS image, and if so, get the FITSImage object,
                // which is needed to initialize WCS and check for FITS extensions.
                Object o = im.getProperty("#fits_image");
                if (o != null && (o instanceof FITSImage)) {
                    _fitsImage = (FITSImage) o;
                    // Check for WCS
                    if (!_noInitWCS) {
                        initWCS();

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     * @param band the bad of the image (0 for FITS files)
     */
    public float getPixelValue(Point2D.Double p, int band) {
        // get the "rescaled" image, so the values displayed are after applying
        // BSCALE and BZERO, if applicable
        PlanarImage im = _imageProcessor.getRescaledSourceImage();
        if (im != null) {
            return _getPixelValue(im, (int) p.getX(), (int) p.getY(),
                    getImageWidth(), getImageHeight(),
                    band);
        }

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     * @param band the band of the image to get
     */
    public float[] getPixelValues(Rectangle region, int band) {
        // get the "rescaled" image, so the values displayed are after applying
        // BSCALE and BZERO, if applicable
        PlanarImage im = _imageProcessor.getRescaledSourceImage();
        if (im != null) {
            float[] ar = new float[region.width * region.height];
            int w = im.getWidth(), h = im.getHeight();
            int n = 0;
            int minX = region.x,
                    minY = region.y,
                    maxX = minX + region.width - 1,
                    maxY = minY + region.height - 1;

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    /**
     * Transform the graphics in the foreground layer according to the current
     * image transformations.
     */
    protected void transformGraphics() {
        PlanarImage im = _imageProcessor.getSourceImage();
        if (im == null) {
            return;
        }


        // need to first reverse previous transform, so that we can move the

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                ri = new RawImage(f);
            } catch (PhotovaultException ex) {
                fail( ex.getMessage() );
            }


            PlanarImage thumbImage = new RenderedImageAdapter( ri.getRenderedImage( 200, 200, true ) );


            JPEGEncodeParam encodeParam = new JPEGEncodeParam();
            ImageEncoder encoder = ImageCodec.createImageEncoder("JPEG", os,
                    encodeParam);
            try {
                encoder.encode( thumbImage );
                os.close();
                // origImage.dispose();
                thumbImage.dispose();
            } catch (Exception e) {
                fail( "Error writing thumbnail: " + e.getMessage() );
            }
        } catch (FileNotFoundException ex) {
            ex.printStackTrace();

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    public void processFile(File file, File newFile) {
        try {
            log("Processing File: " + file.getAbsolutePath());


            FileSeekableStream input = null;
            PlanarImage image = null;
            try {
                input = new FileSeekableStream(file);
                image = JAI.create("stream", input);
                final int size = instructions.size();
                for (int i = 0; i < size; i++) {

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