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 /**
31 *
32 */
33 package org.openimaj.image.segmentation;
34
35 import java.util.List;
36
37 import org.openimaj.image.FImage;
38 import org.openimaj.image.connectedcomponent.ConnectedComponentLabeler;
39 import org.openimaj.image.connectedcomponent.ConnectedComponentLabeler.Algorithm;
40 import org.openimaj.image.pixel.ConnectedComponent;
41 import org.openimaj.image.pixel.ConnectedComponent.ConnectMode;
42 import org.openimaj.image.processor.Processor;
43
44 /**
45 * Simple wrapper to make thresholding algorithms into {@link Segmenter}s by
46 * applying the thresholding operation and then applying connected component
47 * labeling. This class will produce components for both the foreground and
48 * background elements of thresholded input image.
49 *
50 * @author Jonathon Hare (jsh2@ecs.soton.ac.uk)
51 *
52 */
53 public class ConnectedThresholdSegmenter extends ThresholdSegmenter {
54 private ConnectMode mode;
55 private Algorithm algorithm;
56
57 /**
58 * Construct with the given thresholding algorithm implementation and
59 * connection mode.
60 *
61 * @param thresholder
62 * the thresholding algorithm
63 * @param mode
64 * the connection mode
65 */
66 public ConnectedThresholdSegmenter(Processor<FImage> thresholder, ConnectMode mode) {
67 this(thresholder, ConnectedComponentLabeler.Algorithm.TWO_PASS, mode);
68 }
69
70 /**
71 * Construct with the given thresholding algorithm implementation.
72 *
73 * @param thresholder
74 * the thresholding algorithm
75 * @param algorithm
76 * the connected component labeling algorithm to use
77 * @param mode
78 * the connection mode
79 */
80 public ConnectedThresholdSegmenter(Processor<FImage> thresholder, Algorithm algorithm, ConnectMode mode) {
81 super(thresholder);
82 this.mode = mode;
83 this.algorithm = algorithm;
84 }
85
86 @Override
87 public List<ConnectedComponent> segment(FImage image) {
88 final FImage timg = image.process(thresholder);
89
90 return algorithm.findComponents(timg, 0, mode);
91 }
92 }