001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/branches/2.2_testing/src/org/deegree/model/coverage/grid/TiffDEMParser.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2008 by:
006 EXSE, Department of Geography, University of Bonn
007 http://www.giub.uni-bonn.de/deegree/
008 lat/lon GmbH
009 http://www.lat-lon.de
010
011 This library is free software; you can redistribute it and/or
012 modify it under the terms of the GNU Lesser General Public
013 License as published by the Free Software Foundation; either
014 version 2.1 of the License, or (at your option) any later version.
015
016 This library is distributed in the hope that it will be useful,
017 but WITHOUT ANY WARRANTY; without even the implied warranty of
018 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
019 Lesser General Public License for more details.
020
021 You should have received a copy of the GNU Lesser General Public
022 License along with this library; if not, write to the Free Software
023 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
024
025 Contact:
026
027 Andreas Poth
028 lat/lon GmbH
029 Aennchenstr. 19
030 53177 Bonn
031 Germany
032 E-Mail: poth@lat-lon.de
033
034 Prof. Dr. Klaus Greve
035 Department of Geography
036 University of Bonn
037 Meckenheimer Allee 166
038 53115 Bonn
039 Germany
040 E-Mail: greve@giub.uni-bonn.de
041
042 ---------------------------------------------------------------------------*/
043 package org.deegree.model.coverage.grid;
044
045 import java.awt.image.BufferedImage;
046 import java.awt.image.DataBuffer;
047 import java.io.File;
048
049 import org.apache.batik.ext.awt.image.codec.FileCacheSeekableStream;
050 import org.apache.batik.ext.awt.image.codec.tiff.TIFFDecodeParam;
051 import org.apache.batik.ext.awt.image.codec.tiff.TIFFImage;
052
053 /**
054 * Parses 4 channel (32Bit) tiff images as DEM and returns a float matrix containing the DEM heights
055 *
056 *
057 * @version $Revision: 9343 $
058 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
059 * @author last edited by: $Author: apoth $
060 *
061 * @version 1.0. $Revision: 9343 $, $Date: 2007-12-27 14:30:32 +0100 (Do, 27 Dez 2007) $
062 *
063 * @since 2.0
064 */
065 public class TiffDEMParser {
066
067 private DataBuffer db;
068
069 private float scale = 0;
070
071 private float offset = 0;
072
073 private int width = 0;
074
075 private int height = 0;
076
077 /**
078 *
079 * @param dataFile
080 * image containing DEM data instead color information
081 */
082 public TiffDEMParser( File dataFile ) {
083 this( dataFile, 1, 0 );
084 }
085
086 /**
087 *
088 * @param dataFile
089 * image containing DEM data instead color information
090 * @param scale
091 * scale factor; newHeight[i][j] = height[i][j] * scale
092 */
093 public TiffDEMParser( File dataFile, float scale ) {
094 this( dataFile, scale, 0 );
095 }
096
097 /**
098 *
099 * @param dataFile
100 * image containing DEM data instead color information
101 * @param scale
102 * scale factor; newHeight[i][j] = height[i][j] * scale
103 * @param offset
104 * height offset; newHeight[i][j] = height[i][j] + offset
105 */
106 public TiffDEMParser( File dataFile, float scale, float offset ) {
107 try {
108 FileCacheSeekableStream fss = new FileCacheSeekableStream( dataFile.toURL().openStream() );
109 TIFFImage tiff = new TIFFImage( fss, new TIFFDecodeParam(), 0 );
110 db = tiff.getData().getDataBuffer();
111 width = tiff.getWidth();
112 height = tiff.getHeight();
113 } catch ( Exception e ) {
114 e.printStackTrace();
115 }
116 this.scale = scale;
117 this.offset = offset;
118 }
119
120 /**
121 *
122 * @param data
123 * image containing DEM data instead color information
124 */
125 public TiffDEMParser( BufferedImage data ) {
126 this( data, 1, 0 );
127 }
128
129 /**
130 *
131 * @param data
132 * image containing DEM data instead color information
133 * @param scale
134 * scale factor; newHeight[i][j] = height[i][j] * scale
135 */
136 public TiffDEMParser( BufferedImage data, float scale ) {
137 this( data, scale, 0 );
138 }
139
140 /**
141 *
142 * @param data
143 * @param scale
144 * scale factor; newHeight[i][j] = height[i][j] * scale
145 * @param offset
146 * height offset; newHeight[i][j] = height[i][j] + offset
147 */
148 public TiffDEMParser( BufferedImage data, float scale, float offset ) {
149 this.db = data.getRaster().getDataBuffer();
150 this.scale = scale;
151 this.offset = offset;
152 width = data.getWidth();
153 height = data.getHeight();
154 }
155
156 /**
157 * returns the DEM heights as float matrix
158 *
159 * @return the DEM heights as float matrix
160 */
161 public float[][] parse() {
162
163 float[][] terrain = new float[height][width];
164
165 for ( int j = 0; j < height; j++ ) {
166 for ( int i = 0; i < width; i++ ) {
167 terrain[j][i] = db.getElemFloat( width * j + i ) * scale + offset;
168 }
169 }
170
171 return terrain;
172
173 }
174
175 }