1 /**
2 * Copyright (c) 2011, The University of Southampton and the individual contributors.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * * Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 *
11 * * Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * * Neither the name of the University of Southampton nor the names of its
16 * contributors may be used to endorse or promote products derived from this
17 * software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
26 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30 package org.openimaj.experiment.gmm.retrieval;
31
32 import java.util.HashMap;
33 import java.util.Map;
34 import java.util.Set;
35
36 import org.apache.commons.vfs2.FileObject;
37 import org.apache.commons.vfs2.FileSystemException;
38 import org.apache.commons.vfs2.FileSystemManager;
39 import org.apache.commons.vfs2.VFS;
40 import org.openimaj.data.dataset.GroupedDataset;
41 import org.openimaj.data.dataset.ReadableGroupDataset;
42 import org.openimaj.data.identity.Identifiable;
43 import org.openimaj.io.ObjectReader;
44
45 /**
46 * A {@link GroupedDataset} of {@link UKBenchListDataset}s instances each of an
47 * item in the UKBench experiment.
48 *
49 * UKBench can be provided in any form supported by {@link VFS}
50 *
51 * The UKBench files must be in one flat directory and named "ukbenchXXXXX.jpg"
52 *
53 * @author Jonathon Hare (jsh2@ecs.soton.ac.uk)
54 *
55 * @param <IMAGE>
56 * The type of IMAGE in the dataset
57 */
58 public class UKBenchGroupDataset<IMAGE>
59 extends
60 ReadableGroupDataset<Integer, UKBenchListDataset<IMAGE>, IMAGE, FileObject>
61 implements
62 Identifiable
63 {
64 private static final int UKBENCH_OBJECTS = 2550;
65 private Map<Integer, UKBenchListDataset<IMAGE>> ukbenchObjects;
66 private FileObject base;
67
68 /**
69 * @param path
70 * @param reader
71 */
72 public UKBenchGroupDataset(String path, ObjectReader<IMAGE, FileObject> reader) {
73 super(reader);
74 this.ukbenchObjects = new HashMap<Integer, UKBenchListDataset<IMAGE>>();
75 FileSystemManager manager;
76 try {
77 manager = VFS.getManager();
78 this.base = manager.resolveFile(path);
79 } catch (final FileSystemException e) {
80 throw new RuntimeException(e);
81 }
82
83 for (int i = 0; i < UKBENCH_OBJECTS; i++) {
84 this.ukbenchObjects.put(i, new UKBenchListDataset<IMAGE>(path, reader, i));
85 }
86 }
87
88 @Override
89 public String toString() {
90 return String.format("%s(%d groups with a total of %d instances)", this.getClass().getName(), this.size(),
91 this.numInstances());
92 }
93
94 @Override
95 public String getID() {
96 return base.getName().getBaseName();
97 }
98
99 @Override
100 public Set<java.util.Map.Entry<Integer, UKBenchListDataset<IMAGE>>> entrySet() {
101 return ukbenchObjects.entrySet();
102 }
103
104 }