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This is the parser library for the PDS4 planetary data standard.
There is a newer version: 2.8.4
// Copyright 2019, California Institute of Technology ("Caltech").
// U.S. Government sponsorship acknowledged.
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions must reproduce the above copyright notice, this list of
// conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
// * Neither the name of Caltech nor its operating division, the Jet Propulsion
// Laboratory, nor the names of its contributors may be used to endorse or
// promote products derived from this software without specific prior written
// permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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package gov.nasa.pds.objectAccess;

import java.awt.image.BufferedImage;
import java.awt.image.WritableRaster;
import java.io.DataInputStream;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;

import javax.imageio.ImageIO;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


/**  Utility class for converting 2D images. */

class ImageConverter {

	private static final Logger LOGGER = LoggerFactory.getLogger(ImageConverter.class);

	// BufferedImage.TYPE_USHORT_GRAY; //NOTE the only rasters that work are byte.
	private static final ImageConverter INSTANCE = new ImageConverter();
	private static final int SCALE_12_TO_8_BITS = 4096 / 256;

	private ImageConverter() {
	}

	public static ImageConverter getInstance() {
		return INSTANCE;
	}

	/**
	 * Converts a 2D array file to a viewable image file. The newly created image file
	 * is written to the same directory and the input file.
	 *
	 * @param inputFilename
	 * @param outputFilename
	 * @param rows
	 * @param cols
	 * @return
	 * @throws IOException
	 */
	public String convert(String inputFilename, String outputFilename, final int rows, final int cols) throws IOException {

		File inputFile = new File(inputFilename);

		// read 2D array
		BufferedImage bi = readToRaster(inputFile.getAbsoluteFile(), rows, cols);

		// ImageIO write
		writeRasterImage(outputFilename, bi);

		return outputFilename;
	}

	BufferedImage readToRaster(File inputFilename, int rows, int cols) 
	    throws MalformedURLException {
	  return readToRaster(inputFilename.toURI().toURL(), rows, cols);
	}
	
	BufferedImage readToRaster(URL inputFile, int rows, int cols) {
		BufferedImage rv =  new BufferedImage(rows, cols, BufferedImage.TYPE_BYTE_GRAY); // TYPE_USHORT_GRAY
		WritableRaster raster= rv.getRaster();
		int countBytes = -1;
		DataInputStream di = null;

		try {
			di = new DataInputStream(inputFile.openStream());

			for (int y = 0; y < cols; y++){
				for(int x = 0; x