root / trunk / extensions / extGeoreferencing / src / org / gvsig / georeferencing / GeoOperations.java @ 5952
History | View | Annotate | Download (19.6 KB)
| 1 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
|---|---|
| 2 |
*
|
| 3 |
* Copyright (C) 2006 IVER T.I. and Generalitat Valenciana.
|
| 4 |
*
|
| 5 |
* This program is free software; you can redistribute it and/or
|
| 6 |
* modify it under the terms of the GNU General Public License
|
| 7 |
* as published by the Free Software Foundation; either version 2
|
| 8 |
* of the License, or (at your option) any later version.
|
| 9 |
*
|
| 10 |
* This program is distributed in the hope that it will be useful,
|
| 11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 13 |
* GNU General Public License for more details.
|
| 14 |
*
|
| 15 |
* You should have received a copy of the GNU General Public License
|
| 16 |
* along with this program; if not, write to the Free Software
|
| 17 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
| 18 |
*/
|
| 19 |
package org.gvsig.georeferencing; |
| 20 |
|
| 21 |
import java.awt.geom.Point2D; |
| 22 |
import java.io.BufferedOutputStream; |
| 23 |
import java.io.BufferedReader; |
| 24 |
import java.io.BufferedWriter; |
| 25 |
import java.io.DataOutputStream; |
| 26 |
import java.io.File; |
| 27 |
import java.io.FileInputStream; |
| 28 |
import java.io.FileNotFoundException; |
| 29 |
import java.io.FileOutputStream; |
| 30 |
import java.io.IOException; |
| 31 |
import java.io.InputStreamReader; |
| 32 |
import java.io.OutputStream; |
| 33 |
import java.io.OutputStreamWriter; |
| 34 |
import java.util.zip.DataFormatException; |
| 35 |
|
| 36 |
import org.cresques.io.RasterMetaFileTags; |
| 37 |
import org.gvsig.georeferencing.utils.AffineT; |
| 38 |
import org.gvsig.georeferencing.utils.GeoUtils; |
| 39 |
import org.gvsig.georeferencing.utils.PointT; |
| 40 |
import org.xmlpull.v1.XmlPullParserException; |
| 41 |
import org.xmlpull.v1.XmlPullParserFactory; |
| 42 |
import org.xmlpull.v1.XmlSerializer; |
| 43 |
|
| 44 |
import com.iver.cit.gvsig.fmap.layers.FLyrPoints; |
| 45 |
|
| 46 |
|
| 47 |
/**
|
| 48 |
* Operaciones necesarias para la georreferenciaci?n a partir de la capa de puntos.
|
| 49 |
* En base a unos puntos de control de origen y otros de destino se crea una matriz
|
| 50 |
* de transformaci?n para asignar la nueva posici?n a la imagen y crear ficheros
|
| 51 |
* de georreferenciaci?n en dos formatos: worldfile y rasterMetaFile
|
| 52 |
*
|
| 53 |
* @author Nacho Brodin (brodin_ign@gva.es)
|
| 54 |
*/
|
| 55 |
public class GeoOperations{ |
| 56 |
|
| 57 |
//**********************Vars**********************************
|
| 58 |
private int order = 1; |
| 59 |
private PointT[] src = null; |
| 60 |
private PointT[] dst = null; |
| 61 |
private AffineT affine = null; |
| 62 |
private boolean createWorldFile = false; |
| 63 |
//**********************End Vars******************************
|
| 64 |
|
| 65 |
//**********************Methods*******************************
|
| 66 |
/**
|
| 67 |
* Constructor
|
| 68 |
*/
|
| 69 |
public GeoOperations(){}
|
| 70 |
|
| 71 |
/**
|
| 72 |
* Constructor. Crea las estructuras de puntos y calcula la transformaci?n af?n.
|
| 73 |
* @param lyr
|
| 74 |
*/
|
| 75 |
public GeoOperations(FLyrPoints lyr){
|
| 76 |
FLyrPoints lyrPoints = lyr; |
| 77 |
src = new PointT[lyr.getCountActivePoints()];
|
| 78 |
dst = new PointT[lyr.getCountActivePoints()];
|
| 79 |
int nPoint = 0; |
| 80 |
for(int i = 0; i<lyr.getCountActivePoints(); i++){ |
| 81 |
if(lyr.getPoint(i).active == true){ |
| 82 |
src[nPoint] = new PointT();
|
| 83 |
dst[nPoint] = new PointT();
|
| 84 |
src[nPoint].setX(lyr.getPoint(i).pixelPoint.getX()); |
| 85 |
src[nPoint].setY(lyr.getPoint(i).pixelPoint.getY()); |
| 86 |
src[nPoint].setI(lyr.getCountPoints()); |
| 87 |
dst[nPoint].setX(lyr.getPoint(i).mapPoint.getX()); |
| 88 |
dst[nPoint].setY(lyr.getPoint(i).mapPoint.getY()); |
| 89 |
dst[nPoint].setI(lyr.getCountPoints()); |
| 90 |
nPoint++; |
| 91 |
} |
| 92 |
} |
| 93 |
|
| 94 |
if(lyr.getCountActivePoints() >= 3 * 10) |
| 95 |
order = 3;
|
| 96 |
else if(lyr.getCountActivePoints() >= 3 * 6) |
| 97 |
order = 2;
|
| 98 |
else
|
| 99 |
order = 1;
|
| 100 |
|
| 101 |
affine = new AffineT();
|
| 102 |
|
| 103 |
//Calcular la transformaci?n afin por m?nimos cuadrados
|
| 104 |
affine = computeLeastSquaresAffine(affine, src, dst, order); |
| 105 |
} |
| 106 |
|
| 107 |
/**
|
| 108 |
* A partir de la transformaci?n af?n creada en el construtor
|
| 109 |
* genera un fichero de georreferenciaci?n para la imagen.
|
| 110 |
* @param lyr Capa de puntos
|
| 111 |
* @param order Orden del sistema de ecuaciones
|
| 112 |
* @param widthPx Ancho en pixeles de la imagen a georreferenciar
|
| 113 |
* @param heightPx Alto en pixeles de la imagen a georreferenciar
|
| 114 |
* @param file Nombre del fichero raster a georreferenciar
|
| 115 |
*/
|
| 116 |
public void createGeorefFile(int widthPx, int heightPx, String file){ |
| 117 |
try{
|
| 118 |
File f = new File(file); |
| 119 |
String nameWorldFile = f.getPath().substring(0, f.getPath().lastIndexOf(".")) + getExtensionWorldFile(file); |
| 120 |
if(createWorldFile)
|
| 121 |
createWorldFile(affine, widthPx, heightPx, nameWorldFile); |
| 122 |
createRasterMetaFile(affine, widthPx, heightPx, nameWorldFile.substring(0, nameWorldFile.lastIndexOf("."))+".rmf"); |
| 123 |
}catch(IOException ex){ |
| 124 |
System.err.println("Can't create WorldFile"); |
| 125 |
} |
| 126 |
} |
| 127 |
|
| 128 |
/**
|
| 129 |
* A partir de la transformaci?n af?n calculada en el contructor
|
| 130 |
* transforma los puntos pasados como par?metros.
|
| 131 |
* @param lyr Capa de puntos
|
| 132 |
* @param list Lista de puntos a transformar
|
| 133 |
* @return Lista de puntos transformados
|
| 134 |
*/
|
| 135 |
public Point2D[] transformPoints(Point2D[] list){ |
| 136 |
Point2D[] result = new Point2D[list.length]; |
| 137 |
for(int i = 0; i < list.length;i++){ |
| 138 |
double[] pto = transformPoint((int)list[i].getX(), (int)list[i].getY(), affine); |
| 139 |
result[i] = new Point2D.Double(pto[0], pto[1]); |
| 140 |
} |
| 141 |
return result;
|
| 142 |
} |
| 143 |
|
| 144 |
/**
|
| 145 |
* Crea un fichero de georreferenciaci?n (worldfile) a partir de la transformaci?n af?n. Para
|
| 146 |
* esto necesita obtener las coordenadas reales de la coordenada en pixels (0,0) y calcular
|
| 147 |
* el tama?o de pixel.
|
| 148 |
* @param affine Transformaci?n
|
| 149 |
* @param widthPx Ancho en pixeles de la imagen a georreferenciar
|
| 150 |
* @param heightPx Alto en pixeles de la imagen a georreferenciar
|
| 151 |
* @param nameWordlFile Nombre del fichero de georreferenciaci?n
|
| 152 |
* @throws IOException
|
| 153 |
*/
|
| 154 |
private void createWorldFile(AffineT affine, int widthPx, int heightPx, String nameWordlFile) throws IOException { |
| 155 |
StringBuffer data = new StringBuffer(); |
| 156 |
//double[] begin = transformPoint(0, 0, affine);
|
| 157 |
//double[] end = transformPoint(widthPx, heightPx, affine);
|
| 158 |
//double pixelSizeX = (end[0] - begin[0])/(widthPx - 1);
|
| 159 |
//double pixelSizeY = (end[1] - begin[1])/(heightPx - 1);
|
| 160 |
|
| 161 |
File f = new File(nameWordlFile); |
| 162 |
DataOutputStream dos = new DataOutputStream( new BufferedOutputStream(new FileOutputStream(f)) ); |
| 163 |
|
| 164 |
data.append(affine.getCofX(1)+"\n");//pixelSizeX+"\n"); |
| 165 |
data.append(affine.getCofX(2)+"\n"); |
| 166 |
data.append(affine.getCofY(1)+"\n"); |
| 167 |
data.append(affine.getCofY(2)+"\n");//(-1 * pixelSizeY)+"\n"); |
| 168 |
data.append(affine.getCofX(0)+"\n");//""+begin[0]+"\n"); |
| 169 |
data.append(affine.getCofY(0)+"\n");//""+end[1]+"\n"); |
| 170 |
|
| 171 |
dos.writeBytes(data.toString()); |
| 172 |
dos.close(); |
| 173 |
} |
| 174 |
|
| 175 |
/**
|
| 176 |
* A partir de XmlSerializer se salva la georreferenciaci?n
|
| 177 |
* @param serializer
|
| 178 |
* @param min
|
| 179 |
* @param max
|
| 180 |
* @param widthPx Ancho en pixeles de la imagen a georreferenciar
|
| 181 |
* @param heightPx Alto en pixeles de la imagen a georreferenciar
|
| 182 |
* @throws IOException
|
| 183 |
*/
|
| 184 |
private void serializeGeoreferencing(XmlSerializer serializer, double[] min, double[] max, int widthPx, int heightPx) throws IOException { |
| 185 |
double pixelSizeX = (max[0] - min[0])/(widthPx - 1); |
| 186 |
double pixelSizeY = (max[1] - min[1])/(heightPx - 1); |
| 187 |
|
| 188 |
serializer.startTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.PROJ).text("Projection").endTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.PROJ).text("\n"); |
| 189 |
serializer.startTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.BBOX).text("\n");
|
| 190 |
serializer.startTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.POSX).text(""+min[0]).endTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.POSX).text("\n"); |
| 191 |
serializer.startTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.POSY).text(""+min[1]).endTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.POSY).text("\n"); |
| 192 |
serializer.startTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.PX_SIZE_X).text(""+pixelSizeX).endTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.PX_SIZE_X).text("\n"); |
| 193 |
serializer.startTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.PX_SIZE_Y).text(""+ pixelSizeY).endTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.PX_SIZE_Y).text("\n"); |
| 194 |
serializer.startTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.WIDTH).text(""+(max[0] - min[0])).endTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.WIDTH).text("\n"); |
| 195 |
serializer.startTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.HEIGHT).text(""+(max[1] - min[1])).endTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.HEIGHT).text("\n"); |
| 196 |
serializer.endTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.BBOX).text("\n");
|
| 197 |
serializer.startTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.DIM).text("\n");
|
| 198 |
serializer.startTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.PX_WIDTH).text(""+widthPx).endTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.PX_WIDTH).text("\n"); |
| 199 |
serializer.startTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.PX_HEIGHT).text(""+heightPx).endTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.PX_HEIGHT).text("\n"); |
| 200 |
serializer.endTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.DIM).text("\n");
|
| 201 |
} |
| 202 |
|
| 203 |
/**
|
| 204 |
* Si ya existe un fichero de georreferenciaci?n se ha creado un fichero .tmp con
|
| 205 |
* la nueva georreferenciaci?n. Esta funci?n mezcla este temporal con el .rmf existente
|
| 206 |
* en un nuevo fichero _tmpOutput que ser? renombrado como el nuevo .rmf. Finalmente
|
| 207 |
* elimina el temporal y el _tmpOutput.
|
| 208 |
* @param fileName
|
| 209 |
*/
|
| 210 |
private void mergeFiles(String fileName){ |
| 211 |
try{
|
| 212 |
File rmfFile = new File(fileName); |
| 213 |
File tmpFile = new File(fileName.substring(0, fileName.lastIndexOf("."))+".tmp"); |
| 214 |
File out = new File(rmfFile+"_tmpOutput"); |
| 215 |
|
| 216 |
BufferedReader inRmf = new BufferedReader(new InputStreamReader(new FileInputStream(rmfFile))); |
| 217 |
BufferedReader inTmp = new BufferedReader(new InputStreamReader(new FileInputStream(tmpFile))); |
| 218 |
BufferedWriter outTmp = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(out))); |
| 219 |
|
| 220 |
//Leemos el principio del .rmf
|
| 221 |
String str = inRmf.readLine();
|
| 222 |
while(!str.startsWith("<"+RasterMetaFileTags.MAIN_TAG)){ |
| 223 |
outTmp.write(str+"\n");
|
| 224 |
str = inRmf.readLine(); |
| 225 |
} |
| 226 |
outTmp.write(str+"\n");
|
| 227 |
|
| 228 |
//Leemos la georreferenciaci?n del .tmp
|
| 229 |
while(str != null && !str.startsWith("<"+RasterMetaFileTags.LAYER)) |
| 230 |
str = inTmp.readLine(); |
| 231 |
while(str != null){ |
| 232 |
outTmp.write(str+"\n");
|
| 233 |
str = inTmp.readLine(); |
| 234 |
} |
| 235 |
|
| 236 |
//Saltamos la georreferenciaci?n que ya existia en el .rmf
|
| 237 |
try{
|
| 238 |
str = inRmf.readLine(); |
| 239 |
while(str != null && |
| 240 |
!str.startsWith("</"+RasterMetaFileTags.LAYER) &&
|
| 241 |
!str.startsWith("<"+RasterMetaFileTags.GEOPOINTS) &&
|
| 242 |
!str.startsWith("</"+RasterMetaFileTags.MAIN_TAG))
|
| 243 |
str = inRmf.readLine(); |
| 244 |
}catch(Exception exc){ |
| 245 |
|
| 246 |
} |
| 247 |
|
| 248 |
//Leemos el resto del fichero .rmf
|
| 249 |
if(!str.startsWith("<"+RasterMetaFileTags.GEOPOINTS)) |
| 250 |
str = inRmf.readLine(); |
| 251 |
while(str != null){ |
| 252 |
outTmp.write(str+"\n");
|
| 253 |
str = inRmf.readLine(); |
| 254 |
} |
| 255 |
|
| 256 |
outTmp.close(); |
| 257 |
inRmf.close(); |
| 258 |
inTmp.close(); |
| 259 |
|
| 260 |
//Eliminamos el antiguo .rmf y lo sustituimos
|
| 261 |
rmfFile.delete(); |
| 262 |
out.renameTo(rmfFile); |
| 263 |
tmpFile.delete(); |
| 264 |
|
| 265 |
}catch(FileNotFoundException exc){ |
| 266 |
|
| 267 |
}catch(IOException exc){ |
| 268 |
|
| 269 |
} |
| 270 |
} |
| 271 |
|
| 272 |
/**
|
| 273 |
* Si no existe crea un fichero .rmf con la georreferenciaci?n de la imagen. Si existe este
|
| 274 |
* deber? a?adir o modificar la informaci?n de georreferenciaci?n en el fichero.
|
| 275 |
* Para esto necesita obtener las coordenadas reales de la coordenada en pixels (0,0) y
|
| 276 |
* calcular el tama?o de pixel.
|
| 277 |
* @param affine Transformaci?n
|
| 278 |
* @param widthPx Ancho en pixeles de la imagen a georreferenciar
|
| 279 |
* @param heightPx Alto en pixeles de la imagen a georreferenciar
|
| 280 |
* @param nameWordlFile Nombre del fichero de georreferenciaci?n
|
| 281 |
* @throws IOException
|
| 282 |
*/
|
| 283 |
private void createRasterMetaFile(AffineT affine, int widthPx, int heightPx, String nameWorldFile) throws IOException { |
| 284 |
File file = new File(nameWorldFile); |
| 285 |
double[] min = transformPoint(0, 0, affine); |
| 286 |
double[] max = transformPoint(widthPx, heightPx, affine); |
| 287 |
try{
|
| 288 |
XmlPullParserFactory factory = XmlPullParserFactory.newInstance(System.getProperty(XmlPullParserFactory.PROPERTY_NAME), null); |
| 289 |
XmlSerializer serializer = factory.newSerializer(); |
| 290 |
|
| 291 |
if(file.exists()){
|
| 292 |
file = new File(nameWorldFile.substring(0, nameWorldFile.lastIndexOf("."))+".tmp"); |
| 293 |
serializer.setOutput(new FileOutputStream(file), null); |
| 294 |
serializer.startDocument(null, null); |
| 295 |
serializer.ignorableWhitespace("\n\n");
|
| 296 |
serializer.setPrefix("", RasterMetaFileTags.NAMESPACE);
|
| 297 |
serializer.startTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.LAYER).text("\n");
|
| 298 |
serializeGeoreferencing(serializer, min, max, widthPx, heightPx); |
| 299 |
serializer.endTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.LAYER).text("\n");
|
| 300 |
serializer.endDocument(); |
| 301 |
mergeFiles(nameWorldFile); |
| 302 |
}else{
|
| 303 |
serializer.setOutput(new FileOutputStream(file), null); |
| 304 |
serializer.startDocument(null, null); |
| 305 |
serializer.ignorableWhitespace("\n\n");
|
| 306 |
serializer.setPrefix("", RasterMetaFileTags.NAMESPACE);
|
| 307 |
serializer.startTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.MAIN_TAG).text("\n");
|
| 308 |
serializer.startTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.LAYER).text("\n");
|
| 309 |
serializeGeoreferencing(serializer, min, max, widthPx, heightPx); |
| 310 |
serializer.endTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.LAYER).text("\n");
|
| 311 |
serializer.endTag(RasterMetaFileTags.NAMESPACE, RasterMetaFileTags.MAIN_TAG).text("\n");
|
| 312 |
serializer.endDocument(); |
| 313 |
} |
| 314 |
}catch(XmlPullParserException exc){}
|
| 315 |
} |
| 316 |
|
| 317 |
/**
|
| 318 |
* Calcula la transformaci?n af?n a partir de los puntos introducidos por el m?todo de
|
| 319 |
* m?nimos cuadrados.
|
| 320 |
* @param af Transformaci?n af?n
|
| 321 |
* @param src Puntos de entrada en coordenadas pixel
|
| 322 |
* @param dst Puntos de destino en coordenadas del mundo
|
| 323 |
* @param order Orden del sistema de ecuaciones
|
| 324 |
*/
|
| 325 |
public AffineT computeLeastSquaresAffine(AffineT af, PointT[] src, PointT[] dst, int order){ |
| 326 |
double[] b = new double[dst.length]; |
| 327 |
int i,cofs;
|
| 328 |
|
| 329 |
af.setOrder(order); |
| 330 |
cofs = order <= 2 ? order*3 : 10; |
| 331 |
af.mallocCofs(cofs); |
| 332 |
|
| 333 |
//First compute the X cofs
|
| 334 |
for(i = 0; i < dst.length; i++) { |
| 335 |
b[i] = dst[i].getX(); |
| 336 |
} |
| 337 |
|
| 338 |
af.setCofX(singleLeastSquaresAffine(af.getXcofs(), src, b, order)); |
| 339 |
|
| 340 |
//Now compute the Y cofs
|
| 341 |
for(i = 0; i < dst.length; i++) { |
| 342 |
b[i] = dst[i].getY(); |
| 343 |
} |
| 344 |
|
| 345 |
af.setCofY(singleLeastSquaresAffine(af.getYcofs(), src, b, order)); |
| 346 |
|
| 347 |
return af;
|
| 348 |
} |
| 349 |
|
| 350 |
private double[] singleLeastSquaresAffine(double[] a, PointT[] src, double[] dst, int order){ |
| 351 |
int i,j;
|
| 352 |
int n = dst.length;
|
| 353 |
|
| 354 |
int points = order <= 2 ? order * 3 : 10; |
| 355 |
double[][] combined = new double[points][points + 1]; |
| 356 |
double[][] A = new double[n + 1][points]; |
| 357 |
double[][] b = new double[n + 1][1]; |
| 358 |
|
| 359 |
for(i = 0; i < n; i++) { |
| 360 |
A[i][0] = 1.0; |
| 361 |
A[i][1] = src[i].getX();
|
| 362 |
A[i][2] = src[i].getY();
|
| 363 |
if(order > 1) { |
| 364 |
A[i][3] = src[i].getX() * src[i].getX();
|
| 365 |
A[i][4] = src[i].getX() * src[i].getY();
|
| 366 |
A[i][5] = src[i].getY() * src[i].getY();
|
| 367 |
} |
| 368 |
if(order > 2) { |
| 369 |
A[i][6] = src[i].getX() * src[i].getX() * src[i].getX();
|
| 370 |
A[i][7] = src[i].getX() * src[i].getX() * src[i].getY();
|
| 371 |
A[i][8] = src[i].getX() * src[i].getY() * src[i].getY();
|
| 372 |
A[i][9] = src[i].getY() * src[i].getY() * src[i].getY();
|
| 373 |
} |
| 374 |
b[i][0] = dst[i];
|
| 375 |
} |
| 376 |
|
| 377 |
double[][] Atrans = GeoUtils.transpose(A, n, points); |
| 378 |
double[][] left = GeoUtils.multmatrix(Atrans,A,points,n,points); |
| 379 |
double[][] right = GeoUtils.multmatrix(Atrans,b,points,n,1); |
| 380 |
|
| 381 |
for(i = 0; i < points; i++) { |
| 382 |
combined[i][0] = right[i][0]; |
| 383 |
for(j = 0; j < points; j++) { |
| 384 |
combined[i][j+1] = left[i][j];
|
| 385 |
} |
| 386 |
} |
| 387 |
|
| 388 |
try{
|
| 389 |
combined = solve(combined, points, points+1);
|
| 390 |
}catch(DataFormatException ex){ |
| 391 |
System.err.println("Can't solve matrix"); |
| 392 |
} |
| 393 |
|
| 394 |
for(i = 0; i < points; i++) { |
| 395 |
a[i] = combined[i][0];
|
| 396 |
} |
| 397 |
return a;
|
| 398 |
} |
| 399 |
|
| 400 |
|
| 401 |
private double[][] solve(double[][] mat,int rows,int cols)throws DataFormatException{ |
| 402 |
int i,j,k;
|
| 403 |
double d,tmp;
|
| 404 |
int big;
|
| 405 |
|
| 406 |
for(i = 0; i < rows; i++) { |
| 407 |
// Find largest row
|
| 408 |
big = i; |
| 409 |
for(j = i; j < rows; j++) {
|
| 410 |
if(Math.abs(mat[j][i+1]) > Math.abs(mat[big][i+1])) { |
| 411 |
big = j; |
| 412 |
} |
| 413 |
} |
| 414 |
// swap row i and row big
|
| 415 |
for(k = 0; k < cols ; k++) { |
| 416 |
tmp = mat[i][k]; |
| 417 |
mat[i][k] = mat[big][k]; |
| 418 |
mat[big][k] = tmp; |
| 419 |
} |
| 420 |
if(mat[i][i+1] == 0) |
| 421 |
throw new DataFormatException(); |
| 422 |
|
| 423 |
d = 1.0 / mat[i][i+1]; |
| 424 |
for(j = 0; j < cols ; j++) { |
| 425 |
mat[i][j] *= d; |
| 426 |
//assert(!isnan(mat[i][j]));
|
| 427 |
} |
| 428 |
for(k = 0; k < rows; k++) { |
| 429 |
if(k == i)
|
| 430 |
continue;
|
| 431 |
if(mat[k][i+1] != 0.0) { |
| 432 |
d = mat[k][i+1] / mat[i][i+1]; |
| 433 |
for(j = 0; j < cols ; j++) { |
| 434 |
mat[k][j] -= d*mat[i][j]; |
| 435 |
//assert(!isnan(mat[k][j]));
|
| 436 |
} |
| 437 |
} |
| 438 |
} |
| 439 |
} |
| 440 |
return mat;
|
| 441 |
} |
| 442 |
|
| 443 |
/**
|
| 444 |
* Obtiene las coordenadas de un punto en coordenadas del mundo a partir de una transformaci?n
|
| 445 |
* y el punto de entrada en coordenadas de la imagen.
|
| 446 |
* @param sx Coordenada X del punto de entrada
|
| 447 |
* @param syz Coordenada Y del punto de entrada
|
| 448 |
* @param af Transformaci?n
|
| 449 |
* @return Punto transformado
|
| 450 |
*/
|
| 451 |
public double[] transformPoint(int sx, int sy, AffineT af){ |
| 452 |
double[] p = new double[2]; |
| 453 |
if(af.getOrder() == 1) { |
| 454 |
p[0] = af.getCofX(0) + af.getCofX(1) * sx + af.getCofX(2) * sy; |
| 455 |
p[1] = af.getCofY(0) + af.getCofY(1) * sx + af.getCofY(2) * sy; |
| 456 |
} |
| 457 |
else if(af.getOrder() == 2) { |
| 458 |
p = quadTransformPoint(sx, sy, af); |
| 459 |
} |
| 460 |
else {
|
| 461 |
p = cubicTransformPoint(sx, sy, af); |
| 462 |
} |
| 463 |
return p;
|
| 464 |
} |
| 465 |
|
| 466 |
private static double[] quadTransformPoint(int sx, int sy, AffineT af){ |
| 467 |
double[] p = new double[2]; |
| 468 |
p[0] = af.getCofX(0) + af.getCofX(1) * sx + af.getCofX(2) * sy + |
| 469 |
af.getCofX(3) * sx * sx + af.getCofX(4) * sx * sy + af.getCofX(5) * sy * sy; |
| 470 |
p[1] = af.getCofY(0) + af.getCofY(1) * sx + af.getCofY(2) * sy + |
| 471 |
af.getCofY(3) * sx * sx + af.getCofY(4) * sx * sy + af.getCofY(5) * sy * sy; |
| 472 |
return p;
|
| 473 |
} |
| 474 |
|
| 475 |
private static double[] cubicTransformPoint(int sx, int sy, AffineT af){ |
| 476 |
double[] p = new double[2]; |
| 477 |
p[0] = af.getCofX(0) + af.getCofX(1) * sx + af.getCofX(2) * sy + |
| 478 |
af.getCofX(3) * sx * sx + af.getCofX(4) * sx * sy + af.getCofX(5) * sy * sy + |
| 479 |
af.getCofX(6) * sx * sx * sx + af.getCofX(7) * sx * sx * sy + |
| 480 |
af.getCofX(8)*sx*sy*sy + af.getCofX(9)*sy*sy*sy; |
| 481 |
p[1] = af.getCofY(0) + af.getCofY(1) * sx + af.getCofY(2) * sy + |
| 482 |
af.getCofY(3) * sx * sx + af.getCofY(4) * sx * sy + af.getCofY(5) * sy * sy + |
| 483 |
af.getCofY(6) * sx * sx * sx + af.getCofY(7) * sx * sx * sy + |
| 484 |
af.getCofY(8) * sx * sy * sy + af.getCofY(9) * sy * sy * sy; |
| 485 |
return p;
|
| 486 |
} |
| 487 |
//**********************End Methods***************************
|
| 488 |
|
| 489 |
//**********************Setters & Getters*********************
|
| 490 |
/**
|
| 491 |
* M?todo para notificar si se desea crear o no el fichero de coordenadas .tfw, .wld .jpgw ,...
|
| 492 |
* @param createWorldFile
|
| 493 |
*/
|
| 494 |
public void setCreateWorldFile(boolean createWorldFile) { |
| 495 |
this.createWorldFile = createWorldFile;
|
| 496 |
} |
| 497 |
|
| 498 |
/**
|
| 499 |
* Obtiene la extensi?n del fichero de georreferenciaci?n
|
| 500 |
* @return String con la extensi?n del fichero de georreferenciaci?n dependiendo
|
| 501 |
* del valor del formato obtenido del servidor. Por defecto asignaremos un .wld
|
| 502 |
*/
|
| 503 |
private String getExtensionWorldFile(String file){ |
| 504 |
String ext = file.substring(file.lastIndexOf(".") + 1).toLowerCase(); |
| 505 |
String extWorldFile = ".wld"; |
| 506 |
if(ext.equals("tif") || ext.equals("tiff")) |
| 507 |
extWorldFile = ".tfw";
|
| 508 |
if(ext.equals("jpeg") || ext.equals("jpg")) |
| 509 |
extWorldFile = ".jgw";
|
| 510 |
if(ext.equals("gif")) |
| 511 |
extWorldFile = ".gfw";
|
| 512 |
if(ext.equals("png")) |
| 513 |
extWorldFile = ".pgw";
|
| 514 |
return extWorldFile;
|
| 515 |
} |
| 516 |
|
| 517 |
/**
|
| 518 |
* Obtiene la matriz de transformaci?n
|
| 519 |
* @return AffineT
|
| 520 |
*/
|
| 521 |
public AffineT getAffine() {
|
| 522 |
return affine;
|
| 523 |
} |
| 524 |
//**********************End Setters & Getters*****************
|
| 525 |
|
| 526 |
} |