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.analysis.algorithm;
31
32 import org.openimaj.image.FImage;
33 import org.openimaj.image.analyser.ImageAnalyser;
34
35 /**
36 * Project an image onto the x-axis.
37 *
38 * @author Jonathon Hare (jsh2@ecs.soton.ac.uk)
39 *
40 */
41 public class HorizontalProjection implements ImageAnalyser<FImage> {
42 float [] projection;
43
44 /* (non-Javadoc)
45 * @see org.openimaj.image.analyser.ImageAnalyser#analyseImage(org.openimaj.image.Image)
46 */
47 @Override
48 public void analyseImage(FImage image) {
49 projection = project(image);
50 }
51
52 /**
53 * Project an image onto the x-axis.
54 *
55 * @param image the image
56 * @return the projection
57 */
58 public static float[] project(FImage image) {
59 float [] projection = new float[image.width];
60
61 for (int y=0; y<image.height; y++) {
62 for (int x=0; x<image.width; x++) {
63 projection[x] += image.pixels[y][x];
64 }
65 }
66
67 return projection;
68 }
69
70 /**
71 * @return The projection an an image processed with {@link #analyseImage(FImage)}
72 */
73 public float[] getProjection() {
74 return projection;
75 }
76 }