Saturday 24 September 2016

Face Detection(Java)

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
       
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import org.opencv.core.*;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.imgproc.Imgproc;
import org.opencv.objdetect.CascadeClassifier;
import org.opencv.videoio.VideoCapture;

public class FaceDetection extends javax.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;
                 
}
  
 

If any problem in running code on your PC write a Comment and i will Replay

Written By Technical Manager at highcoder.com

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