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PNG2ARFF.java

gehe zur Dokumentation dieser Datei

/*
 * $Source: /shared/cvsroot/diplom/app/src/java/de/picana/converter/PNG2ARFF.java,v $
 * $Author: mstolpe $
 * $Date: 2003/04/22 09:51:28 $
 * $Revision: 1.8 $
 * $Release$
 *
 * Created on 08. November 2002, 22:09
 * 
 * Copyright 2002 by Marco Stolpe 
 */

package de.picana.converter;

import de.picana.control.*;
import de.picana.logging.*;

import java.util.*;
import java.io.*;
import java.awt.image.*;
import javax.imageio.*;


public class PNG2ARFF extends Task {

    private String in_filename;
    private String out_filename;
    private int upperLeftX;
    private int upperLeftY;
    private int lowerRightX;
    private int lowerRightY;
    
    
    public PNG2ARFF() {   
    }

    public void init(ParameterSet params, Logger logger) {
        
        super.init(params, logger);
        
        upperLeftX = 0;
        upperLeftY = 0;
        lowerRightX = -1;
        lowerRightY = -1;
        int width = 0;
        int height = 0;
        
        in_filename = (String)params.getParameter("in");
        out_filename = (String)params.getParameter("out");
        
        try {
            upperLeftX = Integer.parseInt((String)params.getParameter("upperLeftX"));
        } catch (NumberFormatException nfe) {}
        
        try {
            upperLeftY = Integer.parseInt((String)params.getParameter("upperLeftY"));
        } catch (NumberFormatException nfe) {}
        
        if ((String)params.getParameter("width") != null) {
            try {
                width = Integer.parseInt((String)params.getParameter("width"));
            } catch (NumberFormatException nfe) {}
            lowerRightX += width;
        }
        
        if ((String)params.getParameter("height") != null) {
            try {
                height = Integer.parseInt((String)params.getParameter("height"));
            } catch (NumberFormatException nfe) {}
            lowerRightY += height;
        }
        
        if (lowerRightX == -1) {
            try {
                lowerRightX = Integer.parseInt((String)params.getParameter("lowerRightX"));
            } catch (NumberFormatException nfe) {}
        }
        
        if (lowerRightY == -1) {
            try {
                lowerRightY = Integer.parseInt((String)params.getParameter("lowerRightY"));
            } catch (NumberFormatException nfe) {}
        }
    }
    
    public void start() throws TaskException {
        
        try { 
            File infile = new File(in_filename);
            File outfile = new File(out_filename);
            
            if (!outfile.exists()
                || (outfile.exists() && (outfile.lastModified() <= infile.lastModified()))) {
            
                logger.info(LOGSRC, "Started.");
            
                FileInputStream input = new FileInputStream(infile);
                FileOutputStream output = new FileOutputStream(outfile);
                PrintWriter pw = new PrintWriter(output);
            
                pw.println("% ARFF file for picture data from PNG files");
                pw.println("%");
                pw.println("@relation colour");
                pw.println();
                pw.println("@attribute red numeric");
                pw.println("@attribute green numeric");
                pw.println("@attribute blue numeric");
                pw.println();
                pw.println("@data");
                pw.println("%");
                pw.println("% x instances");
                pw.println("%");
            
                BufferedImage image = ImageIO.read(input);
            
                int x, y;
            
                if ((upperLeftX < 0) || (upperLeftX >= image.getWidth()))
                    upperLeftX = 0;
            
                if ((upperLeftY < 0) || (upperLeftY >= image.getHeight()))
                    upperLeftY = 0;
            
                if ((lowerRightX < 0) || (lowerRightX >= image.getWidth()))
                    lowerRightX = image.getWidth()-1;
            
                if ((lowerRightY < 0) || (lowerRightY >= image.getHeight()))
                    lowerRightY = image.getHeight()-1;
            
            
                for (y=upperLeftY; y <= lowerRightY; y++) {
                 
                    for (x=upperLeftX; x <= lowerRightX; x++) {

                        int rgb = image.getRGB(x,y);
                        int red =   (rgb & 0x00ff0000) >> 16;
                        int green = (rgb & 0x0000ff00) >> 8;
                        int blue =  (rgb & 0x000000ff);
                    
                        pw.print((red / 256.0) + ", ");
                        pw.print((green / 256.0) + ", ");
                        pw.print((blue / 256.0));
                        pw.println();
                    }
                }

                pw.close();
                input.close();
            
                logger.info(LOGSRC, "Stopped.");
            }

        } catch (Exception e) {
            throw new TaskException(e.toString());    
        }
    }
    
    public void stop() {
        
    }
    
    public void pause() {
        
    }
    
    public void resume() {
        
    }
}

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