Java tutorial
import java.awt.Graphics; import java.awt.Image; import java.awt.image.BufferedImage; import java.io.ByteArrayInputStream; import javax.imageio.ImageIO; import javax.swing.JOptionPane; import org.opencv.core.Core; import org.opencv.core.Mat; import org.opencv.core.MatOfByte; import org.opencv.core.MatOfRect; import org.opencv.core.Point; import org.opencv.core.Rect; import org.opencv.core.Scalar; import org.opencv.imgcodecs.Imgcodecs; import org.opencv.imgproc.Imgproc; import org.opencv.objdetect.CascadeClassifier; import org.opencv.videoio.VideoCapture; /* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ /** * * @author Useri */ public class FaceView extends javax.swing.JFrame { private MyThread myThread = null; int count = 0; VideoCapture webSource = null; Mat frame = new Mat(); MatOfByte mem = new MatOfByte(); CascadeClassifier faceDetector = new CascadeClassifier( FaceView.class.getResource("haarcascade_frontalface_alt.xml").getPath().substring(1)); MatOfRect faceDetections = new MatOfRect(); class MyThread 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"); Imgproc.rectangle(frame, new Point(rect.x, rect.y), new Point(rect.x + rect.width, rect.y + rect.height), new Scalar(0, 255, 0)); } 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"); } } } } } } /** * Creates new form FaceView */ public FaceView() { initComponents(); System.out.println(FaceView.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") // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents 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, 722, Short.MAX_VALUE)); jPanel1Layout.setVerticalGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGap(0, 338, 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("Check"); 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().addGroup(layout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup().addGap(300, 300, 300).addComponent(jButton1) .addGap(18, 18, 18).addComponent(jButton2)) .addGroup(layout.createSequentialGroup().addContainerGap().addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))) .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))); layout.setVerticalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup().addGap(16, 16, 16) .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addGap(18, 18, 18) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jButton1).addComponent(jButton2)) .addContainerGap())); pack(); }// </editor-fold>//GEN-END:initComponents private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed webSource = new VideoCapture(0); myThread = new MyThread(); Thread t = new Thread(myThread); t.setDaemon(true); myThread.runnable = true; t.start(); jButton1.setEnabled(false); jButton2.setEnabled(true); }//GEN-LAST:event_jButton1ActionPerformed private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed JOptionPane.showMessageDialog(rootPane, "The recoginizer has uccessfully finished training"); myThread.runnable = false; jButton2.setEnabled(false); jButton1.setEnabled(true); webSource.release(); }//GEN-LAST:event_jButton2ActionPerformed /** * @param args the command line arguments */ public static void main(String args[]) { System.loadLibrary(Core.NATIVE_LIBRARY_NAME); /* Set the Nimbus look and feel */ //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) "> /* 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(FaceView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(FaceView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(FaceView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(FaceView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } //</editor-fold> /* Create and display the form */ java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new FaceView().setVisible(true); } }); } // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JButton jButton1; private javax.swing.JButton jButton2; private javax.swing.JPanel jPanel1; // End of variables declaration//GEN-END:variables }