001/**
002 * Copyright (c) 2011, The University of Southampton and the individual contributors.
003 * All rights reserved.
004 *
005 * Redistribution and use in source and binary forms, with or without modification,
006 * are permitted provided that the following conditions are met:
007 *
008 *   *  Redistributions of source code must retain the above copyright notice,
009 *      this list of conditions and the following disclaimer.
010 *
011 *   *  Redistributions in binary form must reproduce the above copyright notice,
012 *      this list of conditions and the following disclaimer in the documentation
013 *      and/or other materials provided with the distribution.
014 *
015 *   *  Neither the name of the University of Southampton nor the names of its
016 *      contributors may be used to endorse or promote products derived from this
017 *      software without specific prior written permission.
018 *
019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
020 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
021 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
022 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
023 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
025 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
026 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
028 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
029 */
030package org.openimaj.demos;
031
032import java.io.File;
033import java.io.IOException;
034
035import org.openimaj.feature.FloatFV;
036import org.openimaj.feature.local.list.MemoryLocalFeatureList;
037import org.openimaj.image.feature.dense.gradient.dsift.FloatDSIFTKeypoint;
038import org.openimaj.image.feature.local.aggregate.FisherVector;
039import org.openimaj.io.IOUtils;
040import org.openimaj.math.statistics.distribution.MixtureOfGaussians;
041import org.openimaj.util.function.Operation;
042import org.openimaj.util.parallel.Parallel;
043
044import scala.actors.threadpool.Arrays;
045
046public class FVFWFVEncode {
047        /**
048         * @param args
049         * @throws IOException
050         */
051        @SuppressWarnings("unchecked")
052        public static void main(String[] args) throws IOException {
053                final MixtureOfGaussians gmm = IOUtils.readFromFile(new File(
054                                "/Volumes/Raid/face_databases/lfw-centre-affine-pdsift-pca64-augm-gmm512.bin"));
055                final FisherVector<float[]> fisher = new FisherVector<float[]>(gmm, true, true);
056                IOUtils.writeToFile(fisher, new File(
057                                "/Volumes/Raid/face_databases/lfw-centre-affine-pdsift-pca64-augm-gmm512-fisher.bin"));
058
059                final File indir = new File("/Volumes/Raid/face_databases/lfw-centre-affine-pdsift-pca64/");
060                final File outdir = new File("/Volumes/Raid/face_databases/lfw-centre-affine-pdsift-pca64-augm-fv512/");
061
062                Parallel.forEach(Arrays.asList(indir.listFiles()), new Operation<File>() {
063                        @Override
064                        public void perform(File dir) {
065                                if (dir.isDirectory()) {
066                                        for (final File f : dir.listFiles()) {
067                                                if (f.getName().endsWith(".bin")) {
068                                                        try {
069                                                                System.out.println(f);
070
071                                                                final MemoryLocalFeatureList<FloatDSIFTKeypoint> feats = MemoryLocalFeatureList.read(f,
072                                                                                FloatDSIFTKeypoint.class);
073
074                                                                final File outfile = new File(outdir, f.getAbsolutePath().replace(
075                                                                                indir.getAbsolutePath(), ""));
076                                                                outfile.getParentFile().mkdirs();
077
078                                                                final FloatFV fv = fisher.aggregate(feats);
079                                                                IOUtils.writeBinary(outfile, fv);
080                                                        } catch (final Exception e) {
081                                                                e.printStackTrace();
082                                                        }
083                                                }
084                                        }
085                                }
086                        }
087                });
088        }
089}