Java tutorial
/* * 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 08:59 */ package net.semanticmetadata.lire.impl.docbuilder; import java.awt.image.BufferedImage; import java.util.Iterator; import java.util.List; import net.semanticmetadata.lire.AbstractDocumentBuilder; import net.semanticmetadata.lire.DocumentBuilder; import net.semanticmetadata.lire.imageanalysis.SurfFeature; import net.semanticmetadata.lire.indexing.parallel.ImageInfo; import net.semanticmetadata.lire.utils.DocumentUtils; import org.apache.lucene.document.Document; import org.apache.lucene.document.Field; import org.apache.lucene.document.StoredField; import com.stromberglabs.jopensurf.SURFInterestPoint; import com.stromberglabs.jopensurf.Surf; /** * User: mathias@juggle.at * Date: 29.09.2010 * Time: 15:41:28 */ public class SurfDocumentBuilder extends AbstractDocumentBuilder { @Override public Field[] createDescriptorFields(BufferedImage image) { Field[] result = null; Surf s = new Surf(image); List<SURFInterestPoint> interestPoints = s.getFreeOrientedInterestPoints(); result = new Field[interestPoints.size()]; int count = 0; for (Iterator<SURFInterestPoint> sipi = interestPoints.iterator(); sipi.hasNext();) { SURFInterestPoint sip = sipi.next(); SurfFeature sf = new SurfFeature(sip); result[count] = (new StoredField(DocumentBuilder.FIELD_NAME_SURF, sf.getByteArrayRepresentation())); count++; } return result; } public Document createDocument(BufferedImage image, ImageInfo imageInfo) { Document doc = null; Surf s = new Surf(image); List<SURFInterestPoint> interestPoints = s.getFreeOrientedInterestPoints(); doc = new Document(); for (Iterator<SURFInterestPoint> sipi = interestPoints.iterator(); sipi.hasNext();) { SURFInterestPoint sip = sipi.next(); SurfFeature sf = new SurfFeature(sip); doc.add(new StoredField(DocumentBuilder.FIELD_NAME_SURF, sf.getByteArrayRepresentation())); } DocumentUtils.appendImageInfoFields(doc, imageInfo); return doc; } }