Face Detection Is The Most Popular Application in Many System Like The Observer or photo editor So i Will Introduce this program in java using Open CV technology
prerequisites 1- Download OpenCV 3.0 Library
2- Download NetBeans IDE
Steps:
1- Add opencv jar file as in the image after right click on libraries
(img 1)
2- go To jar File you already download in bin folder e from opencv extracted download folder
3- add Path of .dl file x86 or x64 from opencv downloaded folder as your machine to NetBeans
like in the image 2
(img 2)
4- Start The Java Code
importjava.awt.Graphics;importjava.awt.Image;importjava.awt.image.BufferedImage;importjava.io.ByteArrayInputStream;importjava.io.InputStream;importjavax.imageio.ImageIO;importjavax.swing.ImageIcon;importjavax.swing.JFrame;importjavax.swing.JLabel;importorg.opencv.core.*;importorg.opencv.imgcodecs.Imgcodecs;importorg.opencv.imgproc.Imgproc;importorg.opencv.objdetect.CascadeClassifier;importorg.opencv.videoio.VideoCapture;public classFaceDetectionextendsjavax.swing.JFrame { private DaemonThread myThread = null; int count = 0; int i1 = 0; VideoCapture webSource = null; Mat frame = new Mat(); MatOfByte mem = new MatOfByte(); CascadeClassifier faceDetector = new CascadeClassifier(FaceDetection.class.getResource("haarcascade_frontalface_alt.xml").getPath().substring(1)); MatOfRect faceDetections = new MatOfRect(); class DaemonThread implements Runnable { protected volatile boolean runnable = false; @Override public void run() { synchronized (this) { while (runnable) { if (webSource.grab()) { try { webSource.retrieve(frame); Graphics g = jPanel1.getGraphics(); faceDetector.detectMultiScale(frame, faceDetections); for (Rect rect : faceDetections.toArray()) { System.out.println("ttt"+i1); showResult(frame); break; } // Highgui.imencode(".bmp", frame, mem); Imgcodecs.imencode(".bmp", frame, mem); Image im = ImageIO.read(new ByteArrayInputStream(mem.toArray())); BufferedImage buff = (BufferedImage) im; if (g.drawImage(buff, 0, 0, getWidth(), getHeight()-150 , 0, 0, buff.getWidth(), buff.getHeight(), null)) { if (runnable == false) { System.out.println("Paused ..... "); this.wait(); } } } catch (Exception ex) { System.out.println("Error"); } } } } } public void showResult(Mat img) { Imgproc.resize(img, img, new Size(640, 480)); MatOfByte matOfByte = new MatOfByte(); Imgcodecs.imencode(".jpg", img, matOfByte); byte[] byteArray = matOfByte.toArray(); BufferedImage bufImage = null; try { InputStream in = new ByteArrayInputStream(byteArray); bufImage = ImageIO.read(in); JFrame frame = new JFrame(); frame.getContentPane().add(new JLabel(new ImageIcon(bufImage))); frame.pack(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } } ///////// /** * Creates new form FaceDetection */ public FaceDetection() { initComponents(); System.out.println(FaceDetection.class.getResource("haarcascade_frontalface_alt.xml").getPath().substring(1)); } /** * This method is called from within the constructor to initialize the form. * WARNING: Do NOT modify this code. The content of this method is always * regenerated by the Form Editor. */ @SuppressWarnings("unchecked") //private void initComponents() { jPanel1 = new javax.swing.JPanel(); jButton1 = new javax.swing.JButton(); jButton2 = new javax.swing.JButton(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1); jPanel1.setLayout(jPanel1Layout); jPanel1Layout.setHorizontalGroup( jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGap(0, 0, Short.MAX_VALUE) ); jPanel1Layout.setVerticalGroup( jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGap(0, 376, Short.MAX_VALUE) ); jButton1.setText("Start"); jButton1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton1ActionPerformed(evt); } }); jButton2.setText("Pause"); jButton2.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton2ActionPerformed(evt); } }); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGap(24, 24, 24) .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addContainerGap()) .addGroup(layout.createSequentialGroup() .addGap(255, 255, 255) .addComponent(jButton1) .addGap(86, 86, 86) .addComponent(jButton2) .addContainerGap(258, Short.MAX_VALUE)) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jButton1) .addComponent(jButton2)) .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) ); pack(); }// private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) { myThread.runnable = false; // stop thread jButton2.setEnabled(false); // activate start button jButton1.setEnabled(true); // deactivate stop button webSource.release(); // stop caturing fron cam } private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { webSource = new VideoCapture(0); // video capture from default cam myThread = new DaemonThread(); //create object of threat class Thread t = new Thread(myThread); t.setDaemon(true); myThread.runnable = true; t.start(); //start thrad jButton1.setEnabled(false); // deactivate start button jButton2.setEnabled(true); // activate stop button } /** * @param args the command line arguments */ public static void main(String args[]) { System.loadLibrary(Core.NATIVE_LIBRARY_NAME); /* Set the Nimbus look and feel */ ///* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel. * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html */ try { for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) { if ("Nimbus".equals(info.getName())) { javax.swing.UIManager.setLookAndFeel(info.getClassName()); break; } } } catch (ClassNotFoundException ex) { java.util.logging.Logger.getLogger(FaceDetection.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(FaceDetection.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(FaceDetection.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(FaceDetection.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new FaceDetection().setVisible(true); } }); } private javax.swing.JButton jButton1; private javax.swing.JButton jButton2; private javax.swing.JPanel jPanel1; }
