svn-gvsig-desktop / branches / org.gvsig.desktop-2018a / org.gvsig.desktop.library / org.gvsig.raster / org.gvsig.raster.lib / org.gvsig.raster.lib.buffer.impl / src / main / java / org / gvsig / raster / lib / buffer / impl / DefaultKernel.java @ 43803
History | View | Annotate | Download (5.84 KB)
1 |
/* gvSIG. Geographic Information System of the Valencian Government
|
---|---|
2 |
*
|
3 |
* Copyright (C) 2007-2008 Infrastructures and Transports Department
|
4 |
* of the Valencian Government (CIT)
|
5 |
*
|
6 |
* This program is free software; you can redistribute it and/or
|
7 |
* modify it under the terms of the GNU General Public License
|
8 |
* as published by the Free Software Foundation; either version 2
|
9 |
* of the License, or (at your option) any later version.
|
10 |
*
|
11 |
* This program is distributed in the hope that it will be useful,
|
12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
14 |
* GNU General Public License for more details.
|
15 |
*
|
16 |
* You should have received a copy of the GNU General Public License
|
17 |
* along with this program; if not, write to the Free Software
|
18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
19 |
* MA 02110-1301, USA.
|
20 |
*
|
21 |
*/
|
22 |
package org.gvsig.raster.lib.buffer.impl; |
23 |
|
24 |
import org.gvsig.raster.lib.buffer.api.Kernel; |
25 |
import org.gvsig.tools.ToolsLocator; |
26 |
import org.gvsig.tools.dynobject.DynStruct; |
27 |
import org.gvsig.tools.persistence.PersistenceManager; |
28 |
import org.gvsig.tools.persistence.Persistent; |
29 |
import org.gvsig.tools.persistence.PersistentState; |
30 |
import org.gvsig.tools.persistence.exception.PersistenceException; |
31 |
|
32 |
|
33 |
/**
|
34 |
* Clase que representa un kernel de NxN p?xeles para realizar operaciones sobre
|
35 |
* un pixel.
|
36 |
* @author Nacho Brodin (nachobrodin@gmail.com)
|
37 |
* @author fdiaz
|
38 |
*/
|
39 |
public class DefaultKernel implements Persistent, Kernel { |
40 |
private double[][] kernel = null; |
41 |
private double divisor = 0; |
42 |
|
43 |
/**
|
44 |
* This constructor is useful only for persistence
|
45 |
*/
|
46 |
public DefaultKernel() {
|
47 |
} |
48 |
|
49 |
/**
|
50 |
* Constructor. Crea la matriz de datos para el kernel.
|
51 |
* @param k datos del kernel
|
52 |
*/
|
53 |
public DefaultKernel(double[][] k) { |
54 |
this.kernel = k;
|
55 |
|
56 |
for (int i = 0; i < kernel.length; i++) |
57 |
for (int j = 0; j < kernel[0].length; j++) |
58 |
divisor = divisor + kernel[i][j]; |
59 |
} |
60 |
|
61 |
/**
|
62 |
* Constructor. Crea la matriz de datos para el kernel.
|
63 |
* @param k datos del kernel
|
64 |
*/
|
65 |
public DefaultKernel(double[][] k, double divisor) { |
66 |
this.kernel = k;
|
67 |
this.divisor = divisor;
|
68 |
} |
69 |
|
70 |
|
71 |
@Override
|
72 |
public double[][] getKernel() { |
73 |
return this.kernel; |
74 |
} |
75 |
|
76 |
/* (non-Javadoc)
|
77 |
* @see org.gvsig.raster.lib.buffer.impl.operations.Kernel#getDivisor()
|
78 |
*/
|
79 |
@Override
|
80 |
public double getDivisor() { |
81 |
return divisor;
|
82 |
} |
83 |
|
84 |
/* (non-Javadoc)
|
85 |
* @see org.gvsig.raster.lib.buffer.impl.operations.Kernel#setDivisor(double)
|
86 |
*/
|
87 |
@Override
|
88 |
public void setDivisor(double divisor) { |
89 |
this.divisor = divisor;
|
90 |
} |
91 |
|
92 |
/* (non-Javadoc)
|
93 |
* @see org.gvsig.raster.lib.buffer.impl.operations.Kernel#getLado()
|
94 |
*/
|
95 |
@Override
|
96 |
public int getSide() { |
97 |
return kernel.length;
|
98 |
} |
99 |
|
100 |
/* (non-Javadoc)
|
101 |
* @see org.gvsig.raster.lib.buffer.impl.operations.Kernel#kernelOperation(org.gvsig.raster.lib.buffer.impl.operations.DefaultKernel)
|
102 |
*/
|
103 |
@Override
|
104 |
public double kernelOperation(Kernel k) { |
105 |
double res = 0; |
106 |
for (int i = 0; i < kernel.length; i++) |
107 |
for (int j = 0; j < kernel[0].length; j++) |
108 |
res += kernel[i][j] * k.getKernel()[i][j]; |
109 |
return res;
|
110 |
} |
111 |
|
112 |
/* (non-Javadoc)
|
113 |
* @see org.gvsig.raster.lib.buffer.impl.operations.Kernel#convolution(org.gvsig.raster.lib.buffer.impl.operations.DefaultKernel)
|
114 |
*/
|
115 |
@Override
|
116 |
public double convolution(Kernel k) { |
117 |
double res = this.kernelOperation(k); |
118 |
if (this.divisor != 0) |
119 |
res = res / divisor; |
120 |
return res;
|
121 |
} |
122 |
|
123 |
|
124 |
/* (non-Javadoc)
|
125 |
* @see org.gvsig.raster.lib.buffer.impl.operations.Kernel#rgbNormalization()
|
126 |
*/
|
127 |
@Override
|
128 |
public void rgbNormalization() { |
129 |
for (int i = 0; i < kernel.length; i++) |
130 |
for (int j = 0; j < kernel[0].length; j++) |
131 |
kernel[i][j] = ((byte)kernel[i][j]) & 0xff; |
132 |
} |
133 |
|
134 |
public void loadFromState(PersistentState state) |
135 |
throws PersistenceException {
|
136 |
int side = state.getInt("side"); |
137 |
kernel = new double[side][side]; |
138 |
if(side >= 3) { |
139 |
kernel[0] = (double[])state.getDoubleArray("row_0"); |
140 |
kernel[1] = (double[])state.getDoubleArray("row_1"); |
141 |
kernel[2] = (double[])state.getDoubleArray("row_2"); |
142 |
} |
143 |
if(side >= 5) { |
144 |
kernel[3] = (double[])state.getDoubleArray("row_3"); |
145 |
kernel[4] = (double[])state.getDoubleArray("row_4"); |
146 |
} |
147 |
if(side >= 7) { |
148 |
kernel[5] = (double[])state.getDoubleArray("row_5"); |
149 |
kernel[6] = (double[])state.getDoubleArray("row_6"); |
150 |
} |
151 |
} |
152 |
|
153 |
public void saveToState(PersistentState state) throws PersistenceException { |
154 |
if(kernel == null) |
155 |
return;
|
156 |
|
157 |
state.set("row_0", kernel[0]); |
158 |
state.set("row_1", kernel[1]); |
159 |
state.set("row_2", kernel[2]); |
160 |
|
161 |
if(kernel.length == 3) { |
162 |
state.set("side", 3); |
163 |
return;
|
164 |
} |
165 |
|
166 |
state.set("row_3", kernel[3]); |
167 |
state.set("row_4", kernel[4]); |
168 |
|
169 |
if(kernel.length == 5) { |
170 |
state.set("side", 5); |
171 |
return;
|
172 |
} |
173 |
|
174 |
state.set("row_5", kernel[5]); |
175 |
state.set("row_6", kernel[6]); |
176 |
|
177 |
if(kernel.length == 7) { |
178 |
state.set("side", 7); |
179 |
return;
|
180 |
} |
181 |
|
182 |
} |
183 |
|
184 |
public static void registerPersistence() { |
185 |
PersistenceManager manager = ToolsLocator.getPersistenceManager(); |
186 |
DynStruct definition = manager.getDefinition("Kernel_Persistent");
|
187 |
if( definition == null ) { |
188 |
definition = manager.addDefinition( |
189 |
DefaultKernel.class, |
190 |
"Kernel_Persistent",
|
191 |
"Kernel Persistency",
|
192 |
null,
|
193 |
null
|
194 |
); |
195 |
} |
196 |
|
197 |
definition.addDynFieldInt("side").setMandatory(false); |
198 |
definition.addDynFieldList("row_0").setClassOfItems(double.class).setMandatory(false); |
199 |
definition.addDynFieldList("row_1").setClassOfItems(double.class).setMandatory(false); |
200 |
definition.addDynFieldList("row_2").setClassOfItems(double.class).setMandatory(false); |
201 |
definition.addDynFieldList("row_3").setClassOfItems(double.class).setMandatory(false); |
202 |
definition.addDynFieldList("row_4").setClassOfItems(double.class).setMandatory(false); |
203 |
definition.addDynFieldList("row_5").setClassOfItems(double.class).setMandatory(false); |
204 |
definition.addDynFieldList("row_6").setClassOfItems(double.class).setMandatory(false); |
205 |
} |
206 |
} |