/*
* 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
*/
package net.semanticmetadata.lire.utils;
import net.semanticmetadata.lire.benchmarking.TestGeneral;
import net.semanticmetadata.lire.imageanalysis.utils.ColorConversion;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.awt.image.WritableRaster;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
/**
* Created by mlux on 25.02.2015.
*/
public class HistogramTest extends TestGeneral {
public void testCountHueValues() throws IOException {
int[] histogram = new int[360];
int[] hsv = new int[3];
ArrayList<String> images = FileUtils.getAllImages(new File("testdata/ferrari"), true);
for (Iterator<String> iterator = images.iterator(); iterator.hasNext(); ) {
String s = iterator.next();
BufferedImage image = ImageIO.read(new FileInputStream(s));
WritableRaster raster = image.getRaster();
int[] pixel = new int[3];
for (int i = 0; i < raster.getWidth(); i++) {
for (int j = 0; j < raster.getHeight(); j++) {
raster.getPixel(i, j, pixel);
ColorConversion.rgb2hsv(pixel[0],pixel[1],pixel[2], hsv);
// check for color hue.
if (hsv[1] > 15 && hsv[2] > 15)
histogram[hsv[0]]++;
}
}
}
for (int i = 0; i < histogram.length; i++) {
System.out.printf("%d\t%d\n", i, histogram[i]);
}
}
}