Capture From Webcam [eclipse]

Pada pembahasan sebelumnya sudah dibahas cara instalasi javaCV dan menampilkan sebuah file gambar. Pada kali ini kita akan kembangkan contoh program sebelumnya dalam penggunaan library javaCV. Kita akan meng-capture gambar dari webcam dan menampilkan hasil capture pada sebuah JLabel (Hasil Capture).

Buatlah project baru dan import library javaCV ke project tersebut (lihat pembahasan sebelumnya) lalu buatlah sebuah class visual dan tambahkan implements runnable pada class tersebut kemudian buatlah tampilan frame seperti gambar di bawah ini.

Buatlah object/variabel dan method baru pada listing program seperti di bawah ini.
boolean stop = false; int x = 368; int y = 245; int i = 0; IplImage img; ImageIcon gmbr; File file; FrameGrabber grabber = new VideoInputFrameGrabber(0); // 1 for next camera CanvasFrame canvas = new CanvasFrame("WebCam");//frame utk live webcam public void startCam() { Thread th = new Thread(this); th.start(); } public void stopCam(){ Thread th = new Thread(); th.stop(); } public void run() { try { grabber.start(); while (true) { img = grabber.grab(); if (img != null) { cvFlip(img, img, 1);//l --> r = Flip 90_degrees CCW // show image on window canvas.showImage(img); } } } catch (Exception e) { } }

Kemudian buatlah event actionperfomed pada masing-masing button lalu ketikan program di bawah ini untuk masing-masing event-nya.

Button Start Camera

startCam(); canvas.setLocation(x, y); if(stop == true) { try { grabber.start(); stop = false; } catch (com.googlecode.javacv.FrameGrabber.Exception e1) { e1.printStackTrace(); } }
Button Stop Camera
try { stopCam(); grabber.stop(); stop = true; } catch (com.googlecode.javacv.FrameGrabber.Exception e1) { e1.printStackTrace(); }
Button Capture cvSaveImage((i++) + "gambar.jpg", img);//menyimpan hasil capture cvSaveImage("captureImage.jpg", img);//menyimpan hasil capture //Show image in jLabel file = new File(System.getProperty("user.dir"));//mendapatkan path file gmbr = new ImageIcon(file + "/captureImage.jpg");//mengambil file gmbr.getImage().flush();//clear JLabel jLabel.setIcon(gmbr);//menampilkan file gambar di JLabel
Button Close
System.exit(0);

Nah..selesai akhirnya pekerjaan kita, sebelum menjalankan program ini nyalakan terlebih dahulu webcamnya dan file hasil capture akan tersimpan dalam project ini. Untuk listing program lengkapnya dapat dilihat di bawah ini.

source code:

import java.awt.BorderLayout; import javax.swing.Icon; import javax.swing.ImageIcon; import javax.swing.JPanel; import javax.swing.JFrame; import javax.swing.JButton; import com.googlecode.javacv.CanvasFrame; import com.googlecode.javacv.FrameGrabber; import com.googlecode.javacv.VideoInputFrameGrabber; import com.googlecode.javacv.cpp.opencv_core.IplImage; import static com.googlecode.javacv.cpp.opencv_core.cvFlip; import static com.googlecode.javacv.cpp.opencv_highgui.cvLoadImage; import static com.googlecode.javacv.cpp.opencv_highgui.cvSaveImage; import java.awt.Rectangle; import java.awt.Point; import java.awt.Dimension; import java.io.File; import javax.swing.JLabel; import java.awt.GridBagLayout; import javax.swing.BorderFactory; import java.awt.Color; import javax.swing.border.TitledBorder; import java.awt.Font; import java.awt.GridBagConstraints; public class ImageCapture extends JFrame implements Runnable{ private static final long serialVersionUID = 1L; private JPanel jContentPane = null; private JButton jButtonStart = null; private JButton jButtonCapture = null; boolean stop = false; int x = 368; int y = 245; int i = 0; IplImage img; ImageIcon gmbr; File file; FrameGrabber grabber = new VideoInputFrameGrabber(0); // 1 for next camera CanvasFrame canvas = new CanvasFrame("WebCam"); private JButton jButtonStop = null; private JButton jButtonClose = null; private JLabel jLabel = null; private JLabel jLabel1 = null; private JPanel jPanel = null; private JLabel jLabel2 = null; private JLabel jLabel3 = null; private JLabel jLabel4 = null; private JLabel jLabel5 = null; public void startCam() { Thread th = new Thread(this); th.start(); } public void stopCam(){ Thread th = new Thread(); th.stop(); } public void run() { try { grabber.start(); while (true) { img = grabber.grab(); if (img != null) { cvFlip(img, img, 1);// l --> r = Flip 90_degrees CCW // show image on window canvas.showImage(img); } } } catch (Exception e) { } } /** * This is the default constructor */ public ImageCapture() { super(); initialize(); } /** * This method initializes this * * @return void */ private void initialize() { this.setSize(368, 524); this.setContentPane(getJContentPane()); this.setTitle("Capture Image [Live WebCam]"); } /** * This method initializes jContentPane * * @return javax.swing.JPanel */ private JPanel getJContentPane() { if (jContentPane == null) { jLabel2 = new JLabel(); jLabel2.setFont(new Font("Dialog", Font.BOLD, 12)); jLabel2.setForeground(Color.green); jLabel2.setBounds(new Rectangle(11, 17, 293, 16)); jLabel2.setText("File hasil capture tersimpan dalam folder project ini."); jLabel1 = new JLabel(); jLabel1.setText("Hasil Capture"); jLabel1.setLocation(new Point(15, 100)); jLabel1.setSize(new Dimension(118, 16)); jLabel = new JLabel(); jLabel.setText(""); jLabel.setLocation(new Point(15, 118)); jLabel.setSize(new Dimension(318, 254)); jContentPane = new JPanel(); jContentPane.setLayout(null); jContentPane.setBackground(new Color(0, 153, 153)); jContentPane.add(getJButtonStart(), null); jContentPane.add(getJButtonCapture(), null); jContentPane.add(getJButtonStop(), null); jContentPane.add(getJButtonClose(), null); jContentPane.add(jLabel, null); jContentPane.add(jLabel1, null); jContentPane.add(getJPanel(), null); } return jContentPane; } /** * This method initializes jButtonStart * * @return javax.swing.JButton */ private JButton getJButtonStart() { if (jButtonStart == null) { jButtonStart = new JButton(); jButtonStart.setBounds(new Rectangle(15, 16, 119, 28)); jButtonStart.setText("Start Camera"); jButtonStart.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent e) { System.out.println("actionPerformed()"); startCam(); canvas.setLocation(x, y); if(stop == true) { try { grabber.start(); stop = false; } catch (com.googlecode.javacv.FrameGrabber.Exception e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } } }); } return jButtonStart; } /** * This method initializes jButtonCapture * * @return javax.swing.JButton */ private JButton getJButtonCapture() { if (jButtonCapture == null) { jButtonCapture = new JButton(); jButtonCapture.setLocation(new Point(151, 16)); jButtonCapture.setText("Capture"); jButtonCapture.setSize(new Dimension(119, 28)); jButtonCapture.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent e) { System.out.println("actionPerformed()"); cvSaveImage((i++) + "gambar.jpg", img); cvSaveImage("captureImage.jpg", img); //Show image in jLabel file = new File(System.getProperty("user.dir")); gmbr = new ImageIcon(file + "/captureImage.jpg"); gmbr.getImage().flush(); jLabel.setIcon(gmbr); } }); } return jButtonCapture; } protected Icon flush() { // TODO Auto-generated method stub return null; } /** * This method initializes jButtonStop * * @return javax.swing.JButton */ private JButton getJButtonStop() { if (jButtonStop == null) { jButtonStop = new JButton(); jButtonStop.setLocation(new Point(15, 59)); jButtonStop.setText("Stop Camera"); jButtonStop.setSize(new Dimension(119, 28)); jButtonStop.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent e) { System.out.println("actionPerformed()"); try { stopCam(); grabber.stop(); stop = true; } catch (com.googlecode.javacv.FrameGrabber.Exception e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } }); } return jButtonStop; } /** * This method initializes jButtonClose * * @return javax.swing.JButton */ private JButton getJButtonClose() { if (jButtonClose == null) { jButtonClose = new JButton(); jButtonClose.setLocation(new Point(151, 59)); jButtonClose.setText("Close"); jButtonClose.setSize(new Dimension(119, 28)); jButtonClose.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent e) { System.out.println("actionPerformed()"); System.exit(0); } }); } return jButtonClose; } /** * This method initializes jPanel * * @return javax.swing.JPanel */ private JPanel getJPanel() { if (jPanel == null) { jLabel5 = new JLabel(); jLabel5.setForeground(Color.green); jLabel5.setSize(new Dimension(293, 16)); jLabel5.setLocation(new Point(11, 74)); jLabel5.setText("/instalasi-javacv-eclipse-di-windows-7.html"); jLabel4 = new JLabel(); jLabel4.setForeground(Color.green); jLabel4.setLocation(new Point(11, 55)); jLabel4.setSize(new Dimension(293, 16)); jLabel4.setText("http://49012001abdullahsani.blogspot.com/2012/06"); jLabel3 = new JLabel(); jLabel3.setForeground(Color.green); jLabel3.setLocation(new Point(11, 36)); jLabel3.setSize(new Dimension(293, 16)); jLabel3.setText("Project ini menggunakan javaCV, lihat link dibawah"); jPanel = new JPanel(); jPanel.setLayout(null); jPanel.setSize(new Dimension(318, 98)); jPanel.setBorder(BorderFactory.createTitledBorder(BorderFactory.createLineBorder(Color.green, 3), "Keterangan", TitledBorder.DEFAULT_JUSTIFICATION, TitledBorder.DEFAULT_POSITION, new Font("Dialog", Font.BOLD, 12), Color.green)); jPanel.setBackground(Color.black); jPanel.setLocation(new Point(15, 382)); jPanel.add(jLabel2, null); jPanel.add(jLabel3, null); jPanel.add(jLabel4, null); jPanel.add(jLabel5, null); } return jPanel; } } // @jve:decl-index=0:visual-constraint="10,10"