root / branches / piloto3d / libraries / libCq CMS for java.old / src / org / cresques / filter / RasterFilter.java @ 9523
History | View | Annotate | Download (7.69 KB)
1 |
/* Cresques Mapping Suite. Graphic Library for constructing mapping applications.
|
---|---|
2 |
*
|
3 |
* Copyright (C) 2004-5.
|
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 |
* For more information, contact:
|
20 |
*
|
21 |
* cresques@gmail.com
|
22 |
*/
|
23 |
package org.cresques.filter; |
24 |
|
25 |
import java.awt.Image; |
26 |
import java.awt.image.BufferedImage; |
27 |
import java.util.Hashtable; |
28 |
|
29 |
import org.cresques.geo.ViewPortData; |
30 |
import org.cresques.io.data.RasterBuf; |
31 |
import org.cresques.io.datastruct.Statistic; |
32 |
import org.cresques.px.Extent; |
33 |
|
34 |
|
35 |
/**
|
36 |
* Filtro para raster. Ancestro de todos los filtros.
|
37 |
* @author Luis W. Sevilla (sevilla_lui@gva.es)
|
38 |
*/
|
39 |
public abstract class RasterFilter implements IRasterFilter { |
40 |
/**
|
41 |
* Nombre del filtro. Este nombre debe asignarlo cada clase de filtro especifico y es necesario
|
42 |
* para leer el nombre en el listado de fitros de la pila.
|
43 |
*/
|
44 |
protected String filterName = ""; |
45 |
protected RasterBuf raster = null; |
46 |
protected Statistic stats = null; |
47 |
protected Image image = null; |
48 |
protected int height = 0; |
49 |
protected int width = 0; |
50 |
protected Hashtable params = new Hashtable(); |
51 |
protected boolean isSupersampling = false; |
52 |
protected ViewPortData viewPortData = null; |
53 |
protected Extent extent = null; |
54 |
/**
|
55 |
* Variable que control la aplicaci?n o no del filtro. Si est? a false aunque est? en
|
56 |
* la pila el filtro no se ejecutar?.
|
57 |
*/
|
58 |
protected boolean exec = true; |
59 |
|
60 |
/**
|
61 |
* Vectores con los pasos usados para el supersampling
|
62 |
*/
|
63 |
protected int[] stepX = null; |
64 |
protected int[] stepY = null; |
65 |
/**
|
66 |
* Posici?n de los vectores de pasos que se est? analizando en un instante dado
|
67 |
*/
|
68 |
protected int contX = -1, contY = -1; |
69 |
|
70 |
/**
|
71 |
* @author Nacho Brodin (brodin_ign@gva.es)
|
72 |
*/
|
73 |
public static class Kernel{ |
74 |
public double[][] kernel = null; |
75 |
protected double divisor = 0; |
76 |
|
77 |
public Kernel(double[][] k){ |
78 |
this.kernel = k;
|
79 |
|
80 |
for (int i=0;i< kernel.length;i++) |
81 |
for (int j=0;j<kernel[0].length;j++) |
82 |
divisor = divisor + kernel[i][j]; |
83 |
} |
84 |
|
85 |
public Kernel(double[][] k,double divisor){ |
86 |
this.kernel = k;
|
87 |
this.divisor = divisor;
|
88 |
} |
89 |
|
90 |
public double kernelOperation(Kernel k){ |
91 |
double res = 0; |
92 |
for (int i=0;i< kernel.length;i++) |
93 |
for (int j=0;j<kernel[0].length;j++) |
94 |
res += kernel[i][j] * k.kernel[i][j]; |
95 |
return res;
|
96 |
} |
97 |
|
98 |
public double convolution (Kernel k){ |
99 |
double res =0; |
100 |
res = this.kernelOperation(k);
|
101 |
if (this.divisor !=0) |
102 |
res = res/divisor; |
103 |
return Math.abs(res); |
104 |
} |
105 |
|
106 |
public double getDivisor() { |
107 |
return divisor;
|
108 |
} |
109 |
|
110 |
public void setDivisor(double divisor) { |
111 |
this.divisor = divisor;
|
112 |
} |
113 |
|
114 |
public int getLado(){ |
115 |
return kernel.length;
|
116 |
} |
117 |
} |
118 |
|
119 |
|
120 |
/**
|
121 |
* Constructor
|
122 |
*/
|
123 |
public RasterFilter() {
|
124 |
} |
125 |
|
126 |
/**
|
127 |
* Aplica el filtro sobre el raster pasado pixel a pixel
|
128 |
*/
|
129 |
public void execute() { |
130 |
pre(); |
131 |
if (exec) {
|
132 |
if(isSupersampling()){
|
133 |
contX = -1;
|
134 |
for (int col = 0; col < width; col += stepX[contX]){ |
135 |
contY = -1;
|
136 |
for (int line = 0; line < height; line += stepY[contY]){ |
137 |
processSuperSampling(col, line); |
138 |
contY ++; |
139 |
} |
140 |
contX ++; |
141 |
} |
142 |
}else{
|
143 |
for (int col = 0; col < width; col += 1) |
144 |
for (int line = 0; line < height; line += 1) |
145 |
process(col, line); |
146 |
} |
147 |
} |
148 |
post(); |
149 |
} |
150 |
|
151 |
/**
|
152 |
* Aplica el filtro sobre el raster pasado por lineas
|
153 |
*/
|
154 |
public void executeLines() { |
155 |
if (exec) {
|
156 |
for (int y = 0; y < height; y++) |
157 |
processLine(y); |
158 |
} |
159 |
} |
160 |
|
161 |
/**
|
162 |
* A?ade un par?metro al filtro
|
163 |
* @param name Clave del par?metro
|
164 |
* @param param Objeto pasado como par?metro
|
165 |
*/
|
166 |
public void addParam(String name, Object param) { |
167 |
params.put(name, param); |
168 |
} |
169 |
|
170 |
/**
|
171 |
* Elimina un par?metro del filtro
|
172 |
* @param name Clave del par?metro a eliminar
|
173 |
*/
|
174 |
public void removeParam(String name){ |
175 |
params.remove(name); |
176 |
} |
177 |
|
178 |
/**
|
179 |
* Obtiene un par?metro a partir de la clave
|
180 |
* @param name Par?metro
|
181 |
* @return Par?metro
|
182 |
*/
|
183 |
public Object getParam(String name){ |
184 |
return params.get(name);
|
185 |
} |
186 |
|
187 |
/**
|
188 |
* Funci?n que contiene el c?digo a ejecutar antes de aplicar el filtro
|
189 |
*/
|
190 |
abstract public void pre(); |
191 |
|
192 |
/**
|
193 |
* Funci?n que contiene el c?digo a ejecutar despues de aplicar el filtro
|
194 |
*/
|
195 |
abstract public void post(); |
196 |
|
197 |
/**
|
198 |
* Ejecuci?n del filtro para un pixel de la imagen
|
199 |
*/
|
200 |
abstract public void process(int x, int y); |
201 |
|
202 |
/**
|
203 |
* Ejecuci?n del filtro para un pixel de la imagen
|
204 |
*/
|
205 |
abstract public void processSuperSampling(int x, int y); |
206 |
|
207 |
/**
|
208 |
* Ejecuci?n del filtro para una l?nea de la imagen
|
209 |
*/
|
210 |
abstract public void processLine(int y); |
211 |
|
212 |
/**
|
213 |
* Obtiene el tipo de datos del raster de entrada
|
214 |
*/
|
215 |
abstract public int getInRasterDataType(); |
216 |
|
217 |
/**
|
218 |
* Obtiene el tipo de datos del raster de salida
|
219 |
*/
|
220 |
abstract public int getOutRasterDataType(); |
221 |
|
222 |
/**
|
223 |
* Obtiene el resultado del filtro despues de su ejecuci?n a trav?s de una clave
|
224 |
* @param name clave para obtener un objeto resultado del filtro.
|
225 |
*/
|
226 |
abstract public Object getResult(String name); |
227 |
|
228 |
/**
|
229 |
* @param viewPortData The viewPortData to set.
|
230 |
*/
|
231 |
public void setViewPortData(ViewPortData viewPortData) { |
232 |
this.viewPortData = viewPortData;
|
233 |
} |
234 |
/**
|
235 |
* @param extent The extent to set.
|
236 |
*/
|
237 |
public void setExtent(Extent extent) { |
238 |
this.extent = extent;
|
239 |
} |
240 |
|
241 |
/**
|
242 |
* Obtiene true si el filtro va a ser ejecutado o false si no va a serlo
|
243 |
* @return
|
244 |
*/
|
245 |
public boolean isExec() { |
246 |
return exec;
|
247 |
} |
248 |
|
249 |
/**
|
250 |
* Asigna el valor a la variable exec. Esta estar? a true si el filtro se ejecutar? la pr?xima
|
251 |
* vez que se repinte o false si no se ejecuta.
|
252 |
* @param exec
|
253 |
*/
|
254 |
public void setExec(boolean exec) { |
255 |
this.exec = exec;
|
256 |
} |
257 |
|
258 |
/**
|
259 |
* Asigna el valor del paso (Solo cuando se hace supersampling).
|
260 |
* @param stepx paso en X
|
261 |
* @param stepy paso en Y
|
262 |
*/
|
263 |
public void setStep(int[] stepX, int[] stepY){ |
264 |
if(stepX != null && stepY != null){ |
265 |
isSupersampling = true;
|
266 |
this.stepX = stepX;
|
267 |
this.stepY = stepY;
|
268 |
}else{
|
269 |
isSupersampling = false;
|
270 |
stepX = stepY = null;
|
271 |
} |
272 |
} |
273 |
|
274 |
/**
|
275 |
* Obtiene si la imagen pasada tiene supersampling o no
|
276 |
* @return true si en el dibujado se ha aplicado supersampling y false si no se ha aplicado.
|
277 |
*/
|
278 |
protected boolean isSupersampling(){ |
279 |
return isSupersampling;
|
280 |
} |
281 |
|
282 |
/**
|
283 |
* Obtiene el nombre del filtro. Este nombre debe asignarlo cada clase
|
284 |
* de filtro especifico y es necesario para leer el nombre en el listado de fitros de la pila.
|
285 |
* @return Cadena que representa el nombre del filtro.
|
286 |
*/
|
287 |
public String getFilterName() { |
288 |
return filterName;
|
289 |
} |
290 |
|
291 |
/**
|
292 |
* ASigna el nombre del filtro.
|
293 |
* @param fName Cadena que representa el identificador del filtro
|
294 |
*/
|
295 |
public void setFilterName(String fName) { |
296 |
filterName = fName; |
297 |
} |
298 |
} |