root / branches / v10 / extensions / extRasterTools / src / org / gvsig / rasterTools / pansharpening / filter / PanSharpeningImageFilter.java @ 10238
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/*
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* Cresques Mapping Suite. Graphic Library for constructing mapping applications.
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*
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* Copyright (C) 2004-5.
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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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* cresques@gmail.com
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*/
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package org.gvsig.rasterTools.pansharpening.filter; |
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import java.awt.Graphics2D; |
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import java.awt.Image; |
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import java.awt.image.BufferedImage; |
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import java.awt.image.PixelGrabber; |
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import org.cresques.filter.ColorSpaceConversion; |
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import org.cresques.geo.ViewPortData; |
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import org.cresques.io.GeoRasterFile; |
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import org.cresques.io.data.RasterBuf; |
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import org.cresques.px.PxRaster; |
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/**
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* Filtro de sharpening que se aplica sobre la vista. Tiene como entradas el objeto Image
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* con las bandas del raster visualizadas en la Vista y la banda pancrom?tica. A partir de
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* estas entradas genera un Image de salida como la que hay pero de resoluci?n igual a la
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* de la pancrom?tica.
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* @author Nacho Brodin (brodin_ign@gva.es)
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*
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*/
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public class PanSharpeningImageFilter extends PanSharpeningFilter { |
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//Variable que dice para cada pixel de la imagen de entrada cuantos de salida hay.
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private int nOutputPixelsPerInputPixel; |
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//Vector con los desplazamientos de los pixeles de salida dentro del vector
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private int[] outKernel; |
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//Kernel aplicado a la pancromatica
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private Kernel kernel = null; |
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private PixelGrabber pgAct = null, pgPrev = null, pgNext = null; |
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int[] bufferPrev = null, bufferAct = null, bufferNext = null; |
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/**
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* Constructor
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*
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*/
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public PanSharpeningImageFilter() {
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super();
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} |
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/**
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* Validamos que haya alguna otra banda adem?s de la pancrom?tica y que la pancrom?tica
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* sea de mayor resoluci?n que las dem?s.
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*/
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private void checkInput(){ |
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exec = true;
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if(heightMultiespec >= heightPancr || widthMultiespec >= widthPancr || heightMultiespec == 0 || widthMultiespec == 0) |
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exec = false;
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for(int i=0;i<files.length;i++){ |
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if(i != posPancromatica){
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if(files[i].getHeight() != heightMultiespec || files[i].getWidth() != widthMultiespec){
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exec = false;
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break;
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} |
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} |
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} |
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} |
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/**
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* Carga los par?metros pasados al filtro en las variables de
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* instancia que corresponde,
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*/
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private void loadParam(){ |
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//Carga de parametros
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this.image = (Image) params.get("raster"); |
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posPancromatica = ((Integer) params.get("pancromatica")).intValue(); |
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files = (GeoRasterFile[]) params.get("files"); |
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bandOrder = (int[]) params.get("order"); |
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alpha = ((Integer) params.get("alpha")).intValue(); |
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method = (String) params.get("method"); |
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coef = ((Double) params.get("coef")).doubleValue(); |
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coefBrovey = ((Integer) params.get("coefBrovey")).intValue(); |
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//Asignamos el nombre de la banda pancrom?tica como par?metro para que cuando
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//volvamos a abrir el dialogo pueda recuperarse y seleccionarse en el cuadro
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pancrName = files[posPancromatica].getName().substring( |
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files[posPancromatica].getName().lastIndexOf("/")+1, |
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files[posPancromatica].getName().length()); |
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this.addParam("pancrName", pancrName); |
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height = image.getHeight(null);
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width = image.getWidth(null);
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heightPancr = files[posPancromatica].getHeight(); |
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widthPancr = files[posPancromatica].getWidth(); |
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for(int i=0;i<files.length;i++){ |
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if(i != posPancromatica){
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heightMultiespec = files[i].getHeight(); |
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widthMultiespec = files[i].getWidth(); |
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} |
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} |
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relX = (int)widthPancr/widthMultiespec;
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relY = (int)heightPancr/heightMultiespec;
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} |
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/* (non-Javadoc)
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* @see org.cresques.io.raster.IRasterFilter#pre()
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*/
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public void pre() { |
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loadParam(); |
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checkInput(); |
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//Creamos el buffer donde se pinta la pancromatica
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imagePancr = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); |
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Graphics2D graphicsPancr = (Graphics2D)imagePancr.getGraphics(); |
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PxRaster rasterPancr = new PxRaster(files[posPancromatica], null, files[posPancromatica].getView()); |
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rasterPancr.setBand(GeoRasterFile.RED_BAND, 0);
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rasterPancr.setBand(GeoRasterFile.GREEN_BAND, 1);
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rasterPancr.setBand(GeoRasterFile.BLUE_BAND, 2);
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ViewPortData vp = (ViewPortData)viewPortData.clone(); |
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vp.zoom(extent); |
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rasterPancr.draw(graphicsPancr, vp); |
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rasterPancr = null;
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//Creamos el buffer donde se pinta la imagen de entrada
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imageMultiespec = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); |
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Graphics2D graphicsMultiespec = (Graphics2D)imageMultiespec.getGraphics(); |
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PxRaster rasterMultiespec = null;
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boolean first = true; |
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for(int i = 0;i<files.length;i++){ |
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if(first){
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rasterMultiespec = new PxRaster(files[i], null, files[posPancromatica].getView()); |
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first = false;
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}else
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rasterMultiespec.addFile(files[i].getName()); |
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} |
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rasterMultiespec.setBand(GeoRasterFile.RED_BAND, bandOrder[0]);
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rasterMultiespec.setBand(GeoRasterFile.GREEN_BAND, bandOrder[1]);
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rasterMultiespec.setBand(GeoRasterFile.BLUE_BAND, bandOrder[2]);
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rasterMultiespec.draw(graphicsMultiespec, vp); |
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rasterMultiespec = null;
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super.pre();
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} |
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/**
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* Aplica la operaci?n de refinamiento sobre el buffer Multiespectral que contiene
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* el RGB que es pasado por par?metro utilizando la pancrom?tica.
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* @param bufferInput Buffer rgb
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* @param length longitud del buffer de la pancromatica utilizado
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* @param iLine l?nea leida de la imagen multiespectral
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* @return buffer con el resultado de la operaci?n
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*/
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private int[] processBrovey(int[] bufferInput, int iLine){ |
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double[] hsl; |
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int[] rgb; |
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PixelGrabber pg = null; |
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//Longitud del buffer de salida
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int widthDst = width * relX;
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//Buffer de salida
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int[] bufferPancr = new int[width]; |
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pg = new PixelGrabber(imagePancr, 0, iLine, width, 1, bufferPancr , 0, width); |
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try {
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pg.grabPixels(); |
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} catch (InterruptedException e) { |
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e.printStackTrace(); |
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} |
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for(int iElem=0; iElem<width; iElem++){ |
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int r = ((bufferInput[iElem] >> 16) & 0xff); |
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int g = ((bufferInput[iElem] >> 8) & 0xff); |
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int b = (bufferInput[iElem] & 0xff); |
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byte i = (byte)((bufferPancr[iElem] >> 16) & 0xff); |
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double scale = (3.0*(i+coefBrovey))/(r+g+b+1.0); |
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r *= scale;g *= scale;b *= scale; |
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bufferPancr[iElem] = ((alpha << 24) & 0xff000000) | |
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((r << 16) & 0x00ff0000)| |
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((g << 8) & 0x0000ff00) | |
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(b & 0x000000ff);
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} |
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return bufferPancr;
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} |
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/**
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* Aplica la operaci?n de refinamiento sobre el buffer Multiespectral que contiene
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* el RGB que es pasado por par?metro utilizando la pancrom?tica.
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* @param bufferInput Buffer rgb
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* @param length longitud del buffer de la pancromatica utilizado
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* @param iLine l?nea leida de la imagen multiespectral
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* @return buffer con el resultado de la operaci?n
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*/
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private int[] processKernel(int[] bufferInput, int iLine){ |
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int[] bufferDst = new int[width]; |
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if(iLine != 0){ |
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bufferPrev = bufferAct; |
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bufferAct = bufferNext; |
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}else{
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bufferPrev = null;
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bufferAct = new int[width]; |
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pgAct = new PixelGrabber(imagePancr, 0, iLine, width, 1, bufferAct , 0, width); |
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try {
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pgAct.grabPixels(); |
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} catch (InterruptedException e) {e.printStackTrace();} |
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} |
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if(iLine != (height - 1)){ |
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bufferNext = new int[width]; |
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pgNext = new PixelGrabber(imagePancr, 0, iLine + 1, width, 1, bufferNext , 0, width); |
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try {
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pgNext.grabPixels(); |
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} catch (InterruptedException e) {e.printStackTrace();} |
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}else
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bufferNext = null;
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for(int iElem=0; iElem<width; iElem++){ |
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int a = ((bufferInput[iElem] >> 24) & 0xff); |
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int r = ((bufferInput[iElem] >> 16) & 0xff); |
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int g = ((bufferInput[iElem] >> 8) & 0xff); |
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int b = (bufferInput[iElem] & 0xff); |
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float[][] op = new float[3][3]; |
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if(bufferPrev != null){ |
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if(iElem != 0)op[0][0] = (bufferPrev[iElem - 1] & 0x000000ff); |
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op[0][1] = (bufferPrev[iElem] & 0x000000ff); |
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if(iElem != (width -1))op[0][2] = (bufferPrev[iElem + 1] & 0x000000ff); |
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} |
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if(iElem != 0)op[1][0] = (bufferAct[iElem - 1] & 0x000000ff); |
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op[1][1] = (bufferAct[iElem] & 0x000000ff); |
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if(iElem != (width -1))op[1][2] = (bufferAct[iElem + 1] & 0x000000ff); |
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if(bufferNext != null){ |
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if(iElem != 0)op[2][0] = (bufferNext[iElem - 1] & 0x000000ff); |
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op[2][1] = (bufferNext[iElem] & 0x000000ff); |
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if(iElem != (width -1))op[2][2] = (bufferNext[iElem + 1] & 0x000000ff); |
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} |
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Kernel operando = new Kernel(op); |
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double i = kernel.kernelOperation(operando) * 0.15; |
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r += i; |
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g += i; |
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b += i; |
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bufferDst[iElem] = ((a << 24) & 0xff000000) | |
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((r << 16) & 0x00ff0000)| |
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((g << 8) & 0x0000ff00) | |
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(b & 0x000000ff);
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} |
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return bufferDst;
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} |
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/**
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* Aplica la operaci?n de refinamiento sobre el buffer Multiespectral que contiene
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* el RGB que es pasado por par?metro utilizando la pancrom?tica.
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* @param bufferInput Buffer rgb
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* @param length longitud del buffer de la pancromatica utilizado
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* @param iLine l?nea leida de la imagen multiespectral
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* @return buffer con el resultado de la operaci?n
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*/
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private int[] processIHS(int[] bufferInput, int iLine){ |
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double[] hsl; |
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int[] rgb; |
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PixelGrabber pg = null; |
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//Buffer de salida
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int[] bufferPancr = new int[width]; |
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pg = new PixelGrabber(imagePancr, 0, iLine, width, 1, bufferPancr , 0, width); |
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try {
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pg.grabPixels(); |
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} catch (InterruptedException e) { |
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e.printStackTrace(); |
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} |
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int[] uvw , tmp = new int[3]; |
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double[] xyz; |
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for(int iElem=0; iElem<width; iElem++){ |
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xyz = ColorSpaceConversion.RGBtoHSL( (bufferInput[iElem] >> 16) & 0x000000ff, |
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(bufferInput[iElem] >> 8) & 0x000000ff, |
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bufferInput[iElem] & 0x000000ff);
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xyz[2] = ((bufferPancr[iElem] & 0x000000ff)/255.0) + coef; |
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tmp[0] = (int)(255.0 * xyz[0] / 360.0 + 0.5); |
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tmp[2] = (int) (xyz[2]*255. + 0.5); |
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tmp[1] = (int) (xyz[1]*255. + 0.5); |
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uvw = ColorSpaceConversion.HSLtoRGB(tmp[ColorSpaceConversion.H], |
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tmp[ColorSpaceConversion.S], |
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tmp[ColorSpaceConversion.L]); |
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bufferPancr[iElem] = ((alpha << 24) & 0xff000000) | |
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((uvw[0] << 16) & 0x00ff0000)| |
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((uvw[1] << 8) & 0x0000ff00) | |
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(uvw[2] & 0x000000ff); |
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} |
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return bufferPancr;
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} |
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/**
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* Aplica el filtro sobre el raster pasado pixel a pixel
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*/
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public void execute() { |
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pre(); |
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if (exec) {
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int[] pRGBArrayMultiesp = new int[width]; |
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int[] pRGBArrayPancr = null; |
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PixelGrabber pg = null; |
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int widthDst = width * relX;
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//Para cada linea leemos los valores RGB del image. Aplicamos el algoritmo
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//y escribimos el resultado.
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if(method.equals("hsl")){ |
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float[][] k = {{-1F, -1F, -1F},{-1F, 8F, -1F},{-1F, -1F, -1F}}; |
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kernel = new Kernel(k); |
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for(int iLine=0;iLine<height ;iLine++){ |
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pg = new PixelGrabber(imageMultiespec, 0, iLine, width, 1, pRGBArrayMultiesp, 0, width); |
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try {
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pg.grabPixels(); |
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} catch (InterruptedException e) {e.printStackTrace();} |
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pRGBArrayPancr = processIHS(pRGBArrayMultiesp, iLine); |
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((BufferedImage)imagePancr).setRGB(0, iLine, width, 1, pRGBArrayPancr, 0, width); |
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} |
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}else{
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for(int iLine=0;iLine<height ;iLine++){ |
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pg = new PixelGrabber(imageMultiespec, 0, iLine, width, 1, pRGBArrayMultiesp, 0, width); |
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try {
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pg.grabPixels(); |
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} catch (InterruptedException e) {e.printStackTrace();} |
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pRGBArrayPancr = processBrovey(pRGBArrayMultiesp, iLine); |
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((BufferedImage)imagePancr).setRGB(0, iLine, width, 1, pRGBArrayPancr, 0, width); |
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} |
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} |
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} |
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post(); |
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} |
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/* (non-Javadoc)
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* @see org.cresques.io.raster.IRasterFilter#process(int, int)
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*/
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public void process(int x, int y) { |
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} |
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/* (non-Javadoc)
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* @see org.cresques.io.raster.IRasterFilter#getInRasterDataType()
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*/
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public int getInRasterDataType() { |
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return RasterBuf.TYPE_IMAGE;
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} |
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/* (non-Javadoc)
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* @see org.cresques.io.raster.IRasterFilter#getOutRasterDataType()
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*/
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public int getOutRasterDataType() { |
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return RasterBuf.TYPE_IMAGE;
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} |
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/* (non-Javadoc)
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* @see org.cresques.io.raster.IRasterFilter#getResult(java.lang.String)
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*/
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public Object getResult(String name) { |
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if (name.equals("raster")) { |
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return (Object) this.imagePancr; |
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} else {
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return null; |
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} |
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} |
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/* (non-Javadoc)
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* @see org.cresques.io.raster.RasterFilter#processLine(int)
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*/
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public void processLine(int y) { |
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} |
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/* (non-Javadoc)
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* @see org.cresques.io.raster.IRasterFilter#post()
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*/
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public void post() { |
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} |
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} |
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