/*
* 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 09:06
*/
package net.semanticmetadata.lire.impl;
import net.semanticmetadata.lire.AbstractDocumentBuilder;
import net.semanticmetadata.lire.DocumentBuilder;
import net.semanticmetadata.lire.imageanalysis.sift.Extractor;
import net.semanticmetadata.lire.imageanalysis.sift.Feature;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.StoredField;
import org.apache.lucene.document.StringField;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.logging.Logger;
/**
* ...
* Date: 23.09.2008
* Time: 12:05:08
*
* @author Mathias Lux, mathias@juggle.at
*/
public class SiftDocumentBuilder extends AbstractDocumentBuilder {
private Logger logger = Logger.getLogger(getClass().getName());
private Extractor extractor;
public SiftDocumentBuilder() {
extractor = new Extractor();
}
@Override
public Field[] createDescriptorFields(BufferedImage image) {
Field[] result = null;
try {
// extract features from image:
List<Feature> features = extractor.computeSiftFeatures(image);
result = new Field[features.size()];
int count = 0;
// create new document:
for (Iterator<Feature> fit = features.iterator(); fit.hasNext(); ) {
Feature f = fit.next();
result[count] = new StoredField(DocumentBuilder.FIELD_NAME_SIFT, f.getByteArrayRepresentation());
count++;
}
} catch (IOException e) {
logger.severe(e.getMessage());
}
return result;
}
public Document createDocument(BufferedImage image, String identifier) {
Document doc = null;
try {
// extract features from image:
List<Feature> features = extractor.computeSiftFeatures(image);
// create new document:
doc = new Document();
for (Iterator<Feature> fit = features.iterator(); fit.hasNext(); ) {
Feature f = fit.next();
// add each feature to the document:
doc.add(new StoredField(DocumentBuilder.FIELD_NAME_SIFT, f.getByteArrayRepresentation()));
}
if (identifier != null)
doc.add(new StringField(DocumentBuilder.FIELD_NAME_IDENTIFIER, identifier, Field.Store.YES));
} catch (IOException e) {
logger.severe(e.getMessage());
}
return doc;
}
}