com.nokia.vikram.lire.LireIndexer.java Source code

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Here is the source code for com.nokia.vikram.lire.LireIndexer.java

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package com.nokia.vikram.lire;
/*
 * This file is part of the LIRE project: http://www.semanticmetadata.net/lire
 * LIRE is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * LIRE is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with LIRE; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * We kindly ask you to refer the any or one of the following publications in
 * any publication mentioning or employing Lire:
 *
 * Lux Mathias, Savvas A. Chatzichristofis. Lire: Lucene Image Retrieval 
 * An Extensible Java CBIR Library. In proceedings of the 16th ACM International
 * Conference on Multimedia, pp. 1085-1088, Vancouver, Canada, 2008
 * URL: http://doi.acm.org/10.1145/1459359.1459577
 *
 * Lux Mathias. Content Based Image Retrieval with LIRE. In proceedings of the
 * 19th ACM International Conference on Multimedia, pp. 735-738, Scottsdale,
 * Arizona, USA, 2011
 * URL: http://dl.acm.org/citation.cfm?id=2072432
 *
 * Mathias Lux, Oge Marques. Visual Information Retrieval using Java and LIRE
 * Morgan & Claypool, 2013
 * URL: http://www.morganclaypool.com/doi/abs/10.2200/S00468ED1V01Y201301ICR025
 *
 * Copyright statement:
 * ====================
 * (c) 2002-2013 by Mathias Lux (mathias@juggle.at)
 *  http://www.semanticmetadata.net/lire, http://www.lire-project.net
 *
 * Updated: 21.04.13 08:13
 */

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;

import javax.imageio.ImageIO;

import net.semanticmetadata.lire.DocumentBuilder;
import net.semanticmetadata.lire.DocumentBuilderFactory;
import net.semanticmetadata.lire.utils.FileUtils;
import net.semanticmetadata.lire.utils.LuceneUtils;

import org.apache.lucene.analysis.core.WhitespaceAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.store.FSDirectory;

import com.nokia.vikram.frames.SimilarFrameEliminator;

/**
 * User: Mathias Lux, mathias@juggle.at
 * Date: 25.05.12
 * Time: 12:04
 */
public class LireIndexer {
    public static final String LireIndexDir = "index";

    public static void main(String[] args) {
        indexImages(SimilarFrameEliminator.ReducedFramesDir, LireIndexer.LireIndexDir);
    }

    public static void indexImages(String inputFramesRootDir, String indexDirectory) {
        try {
            // Getting all images from a directory and its sub directories.
            ArrayList<String> images = FileUtils.getAllImages(new File(inputFramesRootDir), true);

            // Creating a CEDD document builder and indexing all files.
            DocumentBuilder builder = DocumentBuilderFactory.getCEDDDocumentBuilder();

            // Creating an Lucene IndexWriter
            IndexWriterConfig conf = new IndexWriterConfig(LuceneUtils.LUCENE_VERSION,
                    new WhitespaceAnalyzer(LuceneUtils.LUCENE_VERSION));
            conf.setOpenMode(IndexWriterConfig.OpenMode.CREATE_OR_APPEND);

            IndexWriter iw = new IndexWriter(FSDirectory.open(new File(indexDirectory)), conf);

            // Iterating through images building the low level features
            for (Iterator<String> it = images.iterator(); it.hasNext();) {
                String imageFilePath = it.next();
                System.out.println("Indexing image: " + imageFilePath);
                try {
                    BufferedImage img = ImageIO.read(new FileInputStream(imageFilePath));
                    Document document = builder.createDocument(img, imageFilePath);
                    iw.addDocument(document);
                } catch (Exception e) {
                    System.err.println("ERR: Could not read image or index it!");
                    e.printStackTrace();
                }
            }

            // Close the IndexWriter
            iw.close();
            System.out.println("Indexing completed.");
        } catch (IOException e) {
            System.out.println("ERR: IOException while attempting to build index!");
            e.printStackTrace();
        }
    }
}