root / trunk / extensions / extRemoteSensing / src / org / gvsig / remotesensing / principalcomponents / PCImageProcess.java @ 22800
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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.remotesensing.principalcomponents; |
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import java.io.IOException; |
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import org.gvsig.fmap.raster.layers.FLyrRasterSE; |
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import org.gvsig.raster.RasterProcess; |
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import org.gvsig.raster.buffer.BufferFactory; |
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import org.gvsig.raster.buffer.RasterBuffer; |
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import org.gvsig.raster.buffer.RasterBufferInvalidException; |
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import org.gvsig.raster.buffer.WriterBufferServer; |
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import org.gvsig.raster.dataset.GeoRasterWriter; |
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import org.gvsig.raster.dataset.IBuffer; |
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import org.gvsig.raster.dataset.IRasterDataSource; |
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import org.gvsig.raster.dataset.NotSupportedExtensionException; |
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import org.gvsig.raster.dataset.io.RasterDriverException; |
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import org.gvsig.raster.grid.Grid; |
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import org.gvsig.raster.grid.GridException; |
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import org.gvsig.raster.grid.GridExtent; |
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import org.gvsig.raster.util.RasterToolsUtil; |
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import org.gvsig.raster.util.RasterUtilities; |
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import com.iver.andami.PluginServices; |
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import com.iver.cit.gvsig.exceptions.layers.LoadLayerException; |
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/**
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*Proceso de contrucci?n de la imagen resultante del analisis de componentes principales a partir de los
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*componentes seleccionados.
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*
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*@params
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* <LI>FLyrRasterSE "inputRasterLayer": Capa raster de entrada</LI>
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* <LI>PCStatistics "statistics": Estad?sticas del An?lisis de C.P. (ej.: las generadas por PCStatisticsProcess)</LI>
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* <LI>boolean[] "selectedBands": Bandas del raster original que se tienen en cuenta para la transformaci?n</LI>
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* <LI>boolean[] "selectedComponents": Componentes que se usar?n para consturir la imagen transformada</LI>
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* <LI>String "outputPath": Ruta completa al fichero de salida del proceso</LI>
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*
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* @result
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* <LI>FLyrRasterSE: Raster transformado</LI>
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*
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*@author Alejandro Mu?oz Sanchez (alejandro.munoz@uclm.es)
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*@author Diego Guerrero Sevilla (diego.guerrero@uclm.es)
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*@version 19/10/2007
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*/
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public class PCImageProcess extends RasterProcess{ |
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private boolean[] selectedPCs = null; |
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private String layerName = null; |
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private Grid inputGrid = null; |
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private RasterBuffer rasterResult = null; |
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private int percent = 0; |
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private WriterBufferServer writerBufferServer = null;; |
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private FLyrRasterSE inputRasterLayer = null; |
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private FLyrRasterSE outputRasterLayer = null; |
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private boolean[] selectedBands = null; |
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private PCStatistics pcStatistics = null; |
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/**
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* Connstructor
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*/
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public PCImageProcess() {
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} |
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/**
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* @return buffer resultante tras la transformacion
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*/
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public RasterBuffer getBufferResult(){
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return rasterResult;
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} |
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public Object getResult() { |
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return outputRasterLayer;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.gui.beans.incrementabletask.IIncrementable#getLabel()
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*/
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public String getLabel() { |
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return PluginServices.getText(this,"procesando"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.gui.beans.incrementabletask.IIncrementable#getLog()
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*/
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public String getLog() { |
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if (writerBufferServer==null) |
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return PluginServices.getText(this,"generando_pcs")+"..."; |
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else
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return PluginServices.getText(this,"escribiendo_resultado")+"..."; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.gui.beans.incrementabletask.IIncrementable#getPercent()
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*/
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public int getPercent() { |
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if(writerBufferServer==null) |
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return percent;
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return writerBufferServer.getPercent();
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.gui.beans.incrementabletask.IIncrementable#getTitle()
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*/
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public String getTitle() { |
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return PluginServices.getText(this,"principal_components"); |
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} |
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public void init() { |
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inputRasterLayer = (FLyrRasterSE)getLayerParam("inputRasterLayer");
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pcStatistics = (PCStatistics) getParam("statistics");
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selectedBands = (boolean []) getParam("selectedBands"); |
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selectedPCs = (boolean[]) getParam("selectedComponents"); |
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layerName = getStringParam("outputPath");
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buildGrid(); |
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} |
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public void process() throws InterruptedException { |
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// ResultExtent de la primera banda del array
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GridExtent layerExtent = null;
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layerExtent= inputGrid.getGridExtent(); |
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// Se determina el numero de bandas de la imagen resultante, en funcion de la seleccion.
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int numbandas=0; |
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for (int i=0;i<selectedPCs.length;i++) |
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if (selectedPCs[i])numbandas++;
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// Correspondencia entre entre componete seleccionado y banda
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int banda[] = new int[selectedPCs.length]; |
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int band=0; |
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for (int i=0;i<selectedPCs.length;i++) |
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{
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if (selectedPCs[i]){ banda[i]=band; band++;}
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else banda[i]=-1; |
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} |
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// ResultOrden: Orden correcto de autovalores (de mayor a menor)
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int resultOrden[]= new int[pcStatistics.getAutovalues().length]; |
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int cont = pcStatistics.getAutovalues().length-1; |
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int noseleccionados=0; |
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for(int i=0;i<pcStatistics.getAutovalues().length;i++){ |
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if (banda[i]!=-1){ |
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resultOrden[i]=cont; |
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cont--; |
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} |
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else noseleccionados++;
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} |
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for(int i=0;i<pcStatistics.getAutovalues().length;i++){ |
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resultOrden[i]=resultOrden[i]- noseleccionados; |
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} |
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int bandas[]=new int [resultOrden.length -noseleccionados]; |
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for(int i=0; i< bandas.length;i++) |
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bandas[i]=i; |
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// Construccion del buffer para escritura.
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rasterResult=RasterBuffer.getBuffer(IBuffer.TYPE_FLOAT, inputGrid.getLayerNX(), inputGrid.getLayerNY(), bandas.length, true);
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double valor=0; |
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int bandCount= inputGrid.getRasterBuf().getBandCount();
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// BUFFER TYPE BYTE
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if (inputGrid.getRasterBuf().getDataType()== RasterBuffer.TYPE_BYTE){
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// Construccion de la imagen en funcion de los componentes seleccionados.
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for(int i=0; i<layerExtent.getNY();i++ ) { |
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for (int j=0; j<layerExtent.getNX();j++){ |
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for (int k=0; k<bandCount; k++){ |
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if (selectedPCs[k]){
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for(int s=0;s<bandCount;s++) |
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{
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if (selectedPCs[s]){
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inputGrid.setBandToOperate(s); |
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try {
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valor+=(double)inputGrid.getCellValueAsByte(j, i)*pcStatistics.getAutoVectorsMatrix().get(s,resultOrden[k]);
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} catch (GridException e) {
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RasterToolsUtil.messageBoxError(PluginServices.getText(this, "grid_error"), this, e); |
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} |
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} |
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} |
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rasterResult.setElem(i, j, banda[k],(float) valor);
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valor=0;
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} |
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} |
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} |
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percent = i*100/layerExtent.getNX();
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} |
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} // Fin caso RasterBuffer TypeByte
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// BUFFER TYPE SHORT
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if (inputGrid.getRasterBuf().getDataType()== RasterBuffer.TYPE_SHORT){
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for(int i=0; i<layerExtent.getNY();i++ ) { |
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for (int j=0; j<layerExtent.getNX();j++){ |
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for (int k=0; k<bandCount; k++){ |
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if (selectedPCs[k]){
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for(int s=0;s<bandCount;s++) |
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{
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if (selectedPCs[s]){
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inputGrid.setBandToOperate(s); |
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try {
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valor+=(double)inputGrid.getCellValueAsShort(j, i)*pcStatistics.getAutoVectorsMatrix().get(s,resultOrden[k]);
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} catch (GridException e) {
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RasterToolsUtil.messageBoxError(PluginServices.getText(this, "grid_error"), this, e); |
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} |
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} |
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} |
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rasterResult.setElem(i, j, banda[k],(float) valor);
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valor=0;
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} |
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} |
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} |
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percent = i*100/layerExtent.getNX();
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} |
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} // Fin caso RasterBuffer TypeShort
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// BUFFER TYPE INT
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if (inputGrid.getRasterBuf().getDataType()== RasterBuffer.TYPE_INT){
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for(int i=0; i<layerExtent.getNY();i++ ) { |
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for (int j=0; j<layerExtent.getNX();j++){ |
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for (int k=0; k<bandCount; k++){ |
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if (selectedPCs[k]){
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for(int s=0;s<bandCount;s++) |
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{
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if (selectedPCs[s]){
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inputGrid.setBandToOperate(s); |
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try {
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valor+=(double)inputGrid.getCellValueAsInt(j, i)*pcStatistics.getAutoVectorsMatrix().get(s,resultOrden[k]);
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} catch (GridException e) {
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RasterToolsUtil.messageBoxError(PluginServices.getText(this, "grid_error"), this, e); |
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} |
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} |
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} |
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rasterResult.setElem(i, j, banda[k],(float) valor);
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valor=0;
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} |
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} |
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} |
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percent = i*100/layerExtent.getNX();
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} |
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} // Fin caso RasterBuffer TypeInt
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// BUFFER TYPE FLOAT
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if (inputGrid.getRasterBuf().getDataType()== RasterBuffer.TYPE_FLOAT){
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for(int i=0; i<layerExtent.getNY();i++ ) { |
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for (int j=0; j<layerExtent.getNX();j++){ |
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for (int k=0; k<bandCount; k++){ |
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if (selectedPCs[k]){
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for(int s=0;s<bandCount;s++) |
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{
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if (selectedPCs[s]){
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inputGrid.setBandToOperate(s); |
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try {
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valor+=(double)inputGrid.getCellValueAsFloat(j, i)*pcStatistics.getAutoVectorsMatrix().get(s,resultOrden[k]);
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} catch (GridException e) {
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RasterToolsUtil.messageBoxError(PluginServices.getText(this, "grid_error"), this, e); |
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} |
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} |
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} |
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rasterResult.setElem(i, j, banda[k],(float) valor);
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valor=0;
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} |
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} |
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} |
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percent = i*100/layerExtent.getNX();
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} |
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} // Fin caso RasterBuffer TypeFloat
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// BUFFER TYPE DOUBLE
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if (inputGrid.getRasterBuf().getDataType()== RasterBuffer.TYPE_DOUBLE){
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for(int i=0; i<layerExtent.getNY();i++ ) { |
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for (int j=0; j<layerExtent.getNX();j++){ |
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for (int k=0; k<bandCount; k++){ |
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if (selectedPCs[k]){
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for(int s=0;s<bandCount;s++) |
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{
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if (selectedPCs[s]){
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inputGrid.setBandToOperate(s); |
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try {
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valor+=(double)inputGrid.getCellValueAsDouble(j, i)*pcStatistics.getAutoVectorsMatrix().get(s,resultOrden[k]);
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} catch (GridException e) {
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RasterToolsUtil.messageBoxError(PluginServices.getText(this, "grid_error"), this, e); |
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} |
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} |
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} |
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rasterResult.setElem(i, j, banda[k],(float) valor);
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valor=0;
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} |
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} |
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} |
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percent = i*100/layerExtent.getNX();
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} |
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} // Fin caso RasterBuffer TypeDouble
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// escritutra a fichero
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createLayer(); |
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if (externalActions != null) |
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externalActions.end(outputRasterLayer); |
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} |
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/**
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* Escritura del resultado en disco.
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*/
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private void createLayer(){ |
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try{
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// Escritura de los datos a fichero temporal
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if(layerName==null) |
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return;
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String fileName=layerName;
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int endIndex = fileName.lastIndexOf("."); |
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if (endIndex < 0) |
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endIndex = fileName.length(); |
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GeoRasterWriter grw = null;
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writerBufferServer = new WriterBufferServer(rasterResult);
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grw = GeoRasterWriter.getWriter(writerBufferServer, layerName, rasterResult.getBandCount(),inputRasterLayer.getAffineTransform(), rasterResult.getWidth(), rasterResult.getHeight(), rasterResult.getDataType(), GeoRasterWriter.getWriter(layerName).getParams(), null);
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grw.dataWrite(); |
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grw.setWkt(inputRasterLayer.getWktProjection()); |
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grw.writeClose(); |
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outputRasterLayer = FLyrRasterSE.createLayer(RasterUtilities.getFileNameFromCanonical(layerName), |
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layerName, null);
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} catch (NotSupportedExtensionException e) {
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RasterToolsUtil.messageBoxError(PluginServices.getText(this, "error_writer_notsupportedextension"), this, e); |
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} catch (IOException e) { |
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RasterToolsUtil.messageBoxError(PluginServices.getText(this, "error_writer"), this, e); |
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} catch (InterruptedException e) { |
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Thread.currentThread().interrupt();
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} catch (RasterDriverException e) {
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e.printStackTrace(); |
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} catch (LoadLayerException e) {
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RasterToolsUtil.messageBoxError("error_cargar_capa", this, e); |
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} |
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} |
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/**
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* Construye el grid con las bandas seleccionadas
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*/
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private void buildGrid(){ |
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IRasterDataSource dsetCopy = null;
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dsetCopy = inputRasterLayer.getDataSource().newDataset(); |
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BufferFactory bufferFactory = new BufferFactory(dsetCopy);
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if (!RasterBuffer.loadInMemory(dsetCopy))
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bufferFactory.setReadOnly(true);
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int longitud=0; |
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for (int i=0; i<selectedBands.length;i++) |
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if (selectedBands[i]) longitud++;
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int bands[]= new int[longitud]; |
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int j=0; |
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for (int i=0; i<selectedBands.length; i++) |
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if (selectedBands[i])
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{ bands[j]=i;
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j++; |
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} |
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try {
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inputGrid = new Grid(bufferFactory, bands);
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} catch (RasterBufferInvalidException e) {
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e.printStackTrace(); |
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} |
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} |
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} |