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.image.feature;
31
32 import org.openimaj.feature.DoubleFV;
33 import org.openimaj.feature.FeatureExtractor;
34 import org.openimaj.image.FImage;
35 import org.openimaj.util.array.ArrayUtils;
36
37 /**
38 * Transform a {@link DoubleFV} into an {@link FImage}. Note: this makes a copy
39 * of the data
40 *
41 * @author Jonathon Hare (jsh2@ecs.soton.ac.uk)
42 *
43 */
44 public class DoubleFV2FImage implements FeatureExtractor<FImage, DoubleFV> {
45 /**
46 * the image width
47 */
48 public int width;
49
50 /**
51 * the image height
52 */
53 public int height;
54
55 /**
56 * Construct the converter with the given image size
57 *
58 * @param width
59 * @param height
60 */
61 public DoubleFV2FImage(int width, int height) {
62 this.width = width;
63 this.height = height;
64 }
65
66 @Override
67 public FImage extractFeature(DoubleFV object) {
68 return new FImage(ArrayUtils.reshapeFloat(object.values, width, height));
69 }
70
71 /**
72 * Transform a {@link DoubleFV} into an {@link FImage}. Note: this makes a
73 * copy of the data.
74 *
75 * @param fv
76 * the feature vector
77 * @param width
78 * the image width
79 * @param height
80 * the image height
81 * @return the image
82 */
83 public static FImage extractFeature(DoubleFV fv, int width, int height) {
84 return new FImage(ArrayUtils.reshapeFloat(fv.values, width, height));
85 }
86 }