1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BoxLayout;
import javax.swing.ImageIcon;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import org.opencv.core.Core;
import org.opencv.core.Mat;
import org.opencv.core.Point;
import org.opencv.core.Size;
import org.opencv.highgui.HighGui;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.imgproc.Imgproc;
public class MorphologyDemo2 {
private static final String[] MORPH_OP = { "Opening", "Closing", "Gradient", "Top Hat", "Black Hat" };
private static final int[] MORPH_OP_TYPE = { Imgproc.MORPH_OPEN, Imgproc.MORPH_CLOSE,
Imgproc.MORPH_GRADIENT, Imgproc.MORPH_TOPHAT, Imgproc.MORPH_BLACKHAT };
private static final String[] ELEMENT_TYPE = { "Rectangle", "Cross", "Ellipse" };
private static final int MAX_KERNEL_SIZE = 21;
private Mat matImgSrc;
private Mat matImgDst = new Mat();
private int morphOpType = Imgproc.MORPH_OPEN;
private int elementType = Imgproc.CV_SHAPE_RECT;
private int kernelSize = 0;
private JFrame frame;
private JLabel imgLabel;
public MorphologyDemo2(String[] args) {
String imagePath = args.length > 0 ? args[0] : "../data/LinuxLogo.jpg";
matImgSrc = Imgcodecs.imread(imagePath);
if (matImgSrc.empty()) {
System.out.println("Empty image: " + imagePath);
System.exit(0);
}
// Create and set up the window.
frame = new JFrame("Morphology Transformations demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Set up the content pane.
Image img = HighGui.toBufferedImage(matImgSrc);
addComponentsToPane(frame.getContentPane(), img);
// Use the content pane's default BorderLayout. No need for
// setLayout(new BorderLayout());
// Display the window.
frame.pack();
frame.setVisible(true);
}
private void addComponentsToPane(Container pane, Image img) {
if (!(pane.getLayout() instanceof BorderLayout)) {
pane.add(new JLabel("Container doesn't use BorderLayout!"));
return;
}
JPanel sliderPanel = new JPanel();
sliderPanel.setLayout(new BoxLayout(sliderPanel, BoxLayout.PAGE_AXIS));
JComboBox<String> morphOpBox = new JComboBox<>(MORPH_OP);
morphOpBox.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
@SuppressWarnings("unchecked")
JComboBox<String> cb = (JComboBox<String>)e.getSource();
morphOpType = MORPH_OP_TYPE[cb.getSelectedIndex()];
update();
}
});
sliderPanel.add(morphOpBox);
JComboBox<String> elementTypeBox = new JComboBox<>(ELEMENT_TYPE);
elementTypeBox.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
@SuppressWarnings("unchecked")
JComboBox<String> cb = (JComboBox<String>)e.getSource();
if (cb.getSelectedIndex() == 0) {
elementType = Imgproc.CV_SHAPE_RECT;
} else if (cb.getSelectedIndex() == 1) {
elementType = Imgproc.CV_SHAPE_CROSS;
} else if (cb.getSelectedIndex() == 2) {
elementType = Imgproc.CV_SHAPE_ELLIPSE;
}
update();
}
});
sliderPanel.add(elementTypeBox);
sliderPanel.add(new JLabel("Kernel size: 2n + 1"));
JSlider slider = new JSlider(0, MAX_KERNEL_SIZE, 0);
slider.setMajorTickSpacing(5);
slider.setMinorTickSpacing(5);
slider.setPaintTicks(true);
slider.setPaintLabels(true);
slider.addChangeListener(new ChangeListener() {
@Override
public void stateChanged(ChangeEvent e) {
JSlider source = (JSlider) e.getSource();
kernelSize = source.getValue();
update();
}
});
sliderPanel.add(slider);
pane.add(sliderPanel, BorderLayout.PAGE_START);
imgLabel = new JLabel(new ImageIcon(img));
pane.add(imgLabel, BorderLayout.CENTER);
}
private void update() {
Mat element = Imgproc.getStructuringElement(elementType, new Size(2 * kernelSize + 1, 2 * kernelSize + 1),
new Point(kernelSize, kernelSize));
Imgproc.morphologyEx(matImgSrc, matImgDst, morphOpType, element);
Image img = HighGui.toBufferedImage(matImgDst);
imgLabel.setIcon(new ImageIcon(img));
frame.repaint();
}
public static void main(String[] args) {
// Load the native OpenCV library
System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
// Schedule a job for the event dispatch thread:
// creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new MorphologyDemo2(args);
}
});
}
}
|
