001/*
002 * *** BEGIN LICENSE BLOCK *****
003 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
004 *
005 * The contents of this file are subject to the Mozilla Public License Version
006 * 1.1 (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 * http://www.mozilla.org/MPL/
009 *
010 * Software distributed under the License is distributed on an "AS IS" basis,
011 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
012 * for the specific language governing rights and limitations under the
013 * License.
014 *
015 * The Original Code is part of dcm4che, an implementation of DICOM(TM) in
016 * Java(TM), hosted at https://github.com/gunterze/dcm4che.
017 *
018 * The Initial Developer of the Original Code is
019 * J4Care.
020 * Portions created by the Initial Developer are Copyright (C) 2015
021 * the Initial Developer. All Rights Reserved.
022 *
023 * Contributor(s):
024 * See @authors listed below
025 *
026 * Alternatively, the contents of this file may be used under the terms of
027 * either the GNU General Public License Version 2 or later (the "GPL"), or
028 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
029 * in which case the provisions of the GPL or the LGPL are applicable instead
030 * of those above. If you wish to allow use of your version of this file only
031 * under the terms of either the GPL or the LGPL, and not to allow others to
032 * use your version of this file under the terms of the MPL, indicate your
033 * decision by deleting the provisions above and replace them with the notice
034 * and other provisions required by the GPL or the LGPL. If you do not delete
035 * the provisions above, a recipient may use your version of this file under
036 * the terms of any one of the MPL, the GPL or the LGPL.
037 *
038 * *** END LICENSE BLOCK *****
039 */
040
041package org.dcm4che3.image;
042
043import java.awt.*;
044import java.awt.color.ColorSpace;
045import java.awt.image.*;
046
047/**
048 * @author Gunter Zeilinger <gunterze@gmail.com>
049 * @since Aug 2015
050 */
051public class BufferedImageUtils {
052
053    private BufferedImageUtils() {}
054
055    public static BufferedImage convertToIntRGB(BufferedImage bi) {
056        ColorModel cm = bi.getColorModel();
057        if (cm instanceof DirectColorModel)
058            return bi;
059
060        if (cm.getNumComponents() != 3)
061            throw new IllegalArgumentException("ColorModel: " + cm);
062
063        WritableRaster raster = bi.getRaster();
064        if (cm instanceof PaletteColorModel)
065            return ((PaletteColorModel) cm).convertToIntDiscrete(raster);
066
067        BufferedImage intRGB = new BufferedImage(bi.getWidth(), bi.getHeight(), BufferedImage.TYPE_INT_RGB);
068        Graphics graphics = intRGB.getGraphics();
069        try {
070            graphics.drawImage(bi, 0, 0, null);
071        } finally {
072            graphics.dispose();
073        }
074        return intRGB;
075    }
076
077}