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trunk/extensions/extGeoreferencing/src-test/org/gvsig/georeferencing/process/TGeoTransformProcessPixelToMapYTest.java | ||
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana |
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* |
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* Copyright (C) 2006 Instituto de Desarrollo Regional and Generalitat Valenciana. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA. |
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* |
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* For more information, contact: |
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* |
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* Generalitat Valenciana |
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* Conselleria d'Infraestructures i Transport |
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* Av. Blasco Iba?ez, 50 |
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* 46010 VALENCIA |
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* SPAIN |
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* |
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* +34 963862235 |
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* gvsig@gva.es |
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* www.gvsig.gva.es |
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* |
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* or |
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* |
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* Instituto de Desarrollo Regional (Universidad de Castilla La-Mancha) |
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* Campus Universitario s/n |
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* 02071 Alabacete |
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* Spain |
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* |
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* +34 967 599 200 |
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*/ |
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package org.gvsig.georeferencing.process; |
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import java.awt.geom.Point2D; |
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import junit.framework.TestCase; |
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import org.gvsig.georeferencing.process.geotransform.GeoTransformDataResult; |
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import org.gvsig.georeferencing.process.geotransform.GeoTransformProcess; |
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import org.gvsig.raster.datastruct.GeoPoint; |
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import Jama.Matrix; |
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/**Test que prueba la el proceso de geotransfornmcion dados una serie de puntos de |
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* control. Compara los coeficientes obtenidos para el polinomio de transformacion |
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* (de coordenadas pixel a coordenadas mapa para las Y), con los obtenidos |
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* manualmente, resolviendo por el m?todo de Cramer. |
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* |
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* |
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* @author aMu?oz (alejandro.munoz@uclm.es) |
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* */ |
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public class TGeoTransformProcessPixelToMapYTest extends TestCase { |
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private GeoPoint gpcs[] = new GeoPoint[3]; |
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private double geoPoints[][] ={{ 1369.000000 , 2985.750000 }, |
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{ 1673.500000 , 2803.250000 }, |
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{ 2092.500000 , 2933.250000 }, |
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}; |
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private double imagePoints[][]={{ 577.500000 , 2427.500000 }, |
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{ 803.000000 , 2235.500000 }, |
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{ 1165.500000 , 2285.250000 }, |
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}; |
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public void start() { |
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this.testStack(); |
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} |
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public void testStack() { |
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System.err.println("TGeoTransformProcessTest running..."); |
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for(int i=0;i<geoPoints.length;i++) |
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{ |
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Point2D pW = new Point2D.Double(geoPoints[i][0],geoPoints[i][1]); |
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Point2D pP = new Point2D.Double(imagePoints[i][0],imagePoints[i][1]); |
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gpcs[i]= new GeoPoint(pP,pW); |
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} |
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GeoTransformProcess proceso = new GeoTransformProcess(); |
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proceso.addParam("gpcs",gpcs); |
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proceso.addParam("orden", new Integer(1)); |
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proceso.run(); |
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GeoTransformDataResult resultado= (GeoTransformDataResult) proceso.getResult(); |
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resultado.getPixelToMapCoefX(); |
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// Estimacion de los coeficientes de forma manual, siquiento la teoria del manual de Jose Gonzalez |
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// Matriz para el ejmplo correspondiente a la figura 2.20 |
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double M[][]={ |
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{3, 2546, 6948.25}, |
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{2546, 2336705.5, 5860446.625}, |
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{6948.25, 5860446.625, 16112584.0625} |
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}; |
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Matrix m_M = new Matrix(M); |
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double det= m_M.det(); |
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double A0[][]={ |
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{8722.25, 2546, 6948.25}, |
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{7393983.25, 2336705.5, 5860446.625}, |
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{20217783.062, 5860446.625, 16112584.0625} |
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}; |
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Matrix m_A0= new Matrix (A0); |
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double coef0= m_A0.det()/det; |
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double A1[][]={ |
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{3, 8722.25, 6948.25}, |
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{2546, 7393983.25, 5860446.625}, |
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{6948.25, 20217783.062, 16112584.0625} |
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}; |
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Matrix m_A1= new Matrix (A1); |
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double coef1= m_A1.det()/det; |
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double A2[][]={ |
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{3, 2546, 8722.25, }, |
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{2546, 2336705.5, 7393983.25, }, |
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{6948.25, 5860446.625, 20217783.062, } |
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}; |
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Matrix m_A2= new Matrix (A2); |
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double coef2= m_A2.det()/det; |
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// Comprobacion de los coeficientes obtenidos tras el proceso con los determinados de forma manual |
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assertEquals(coef0, resultado.getPixelToMapCoefY()[0],0.1); |
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assertEquals(coef1, resultado.getPixelToMapCoefY()[1],0.1); |
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assertEquals(coef2, resultado.getPixelToMapCoefY()[2],0.1); |
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} |
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} |
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