/** * Gets pixel data of an <code>IIOImage</code> object. * * @param image an <code>IIOImage</code> object * @return a byte buffer of pixel data * @throws Exception */ public static ByteBuffer getImageByteBuffer(IIOImage 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); ImageWriter writer = writers.next(); if (writer == null) { throw new RuntimeException( "Need to install JAI Image I/O package.\nhttps://jai-imageio.dev.java.net"); } // 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.getRenderedImage(), null, null), tiffWriteParam); // writer.write(image.getRenderedImage()); writer.dispose(); // ImageIO.write(image.getRenderedImage(), "tiff", ios); // this can be used in lieu of // writer ios.seek(0); BufferedImage bi = ImageIO.read(ios); return convertImageData(bi); }