Java tutorial
/* * 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. */ package opencv; import java.awt.image.BufferedImage; import java.io.ByteArrayInputStream; import java.io.InputStream; import java.util.ArrayList; import java.util.List; import javax.imageio.ImageIO; import javax.swing.ImageIcon; import org.opencv.core.Core; import org.opencv.core.Mat; import org.opencv.core.MatOfByte; import org.opencv.core.MatOfPoint; import org.opencv.core.Rect; import org.opencv.core.Scalar; import org.opencv.core.Size; import org.opencv.imgcodecs.Imgcodecs; import org.opencv.imgproc.Imgproc; import org.opencv.videoio.VideoCapture; /** * * @author Aryandev */ public class CamCapture extends javax.swing.JFrame { /** * Creates new form CamCapture */ int stopflag; private VideoCapture vc; private Thread t; public CamCapture() { stopflag = 0; initComponents(); } /** * 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() { jLabel1 = new javax.swing.JLabel(); jButton1 = new javax.swing.JButton(); jLabel2 = new javax.swing.JLabel(); jLabel3 = new javax.swing.JLabel(); jButton2 = new javax.swing.JButton(); jLabel4 = new javax.swing.JLabel(); jLabel5 = new javax.swing.JLabel(); jLabel1.setText("jLabel1"); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); jButton1.setText("Start"); jButton1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton1ActionPerformed(evt); } }); jLabel2.setText("It's Drjslab Creation"); jLabel3.setBackground(new java.awt.Color(0, 0, 0)); jLabel3.setText("Cam Capture"); jLabel3.setBorder(javax.swing.BorderFactory.createEtchedBorder()); jButton2.setText("Stop & Exit"); jButton2.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton2ActionPerformed(evt); } }); jLabel4.setText("Operation "); jLabel4.setBorder(javax.swing.BorderFactory.createEtchedBorder()); jLabel5.setText("Detacted motion"); jLabel5.setBorder(javax.swing.BorderFactory.createEtchedBorder()); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup().addContainerGap() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 84, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(54, 54, 54).addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 117, javax.swing.GroupLayout.PREFERRED_SIZE)) .addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 300, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel2)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 42, Short.MAX_VALUE) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 300, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel5, javax.swing.GroupLayout.PREFERRED_SIZE, 300, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGap(21, 21, 21))); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup().addContainerGap() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 300, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 300, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup().addGap(16, 16, 16).addGroup(layout .createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jButton1).addComponent(jButton2)) .addPreferredGap( javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addComponent(jLabel2)) .addGroup(layout.createSequentialGroup().addGap(18, 18, 18).addComponent( jLabel5, javax.swing.GroupLayout.PREFERRED_SIZE, 300, javax.swing.GroupLayout.PREFERRED_SIZE))) .addContainerGap(30, Short.MAX_VALUE))); pack(); }// </editor-fold>//GEN-END:initComponents private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed // TODO add your handling code here: stopflag = 1; System.loadLibrary("opencv_java300"); vc = new VideoCapture(0); final int SENSITIVITY_VALUE = 20; final int BLUR_SIZE = 10; final int WIDTH = jLabel3.getHeight(); final int HEIGHT = jLabel3.getWidth(); try { t = new Thread() { Mat previousFrame = new Mat(); Mat currentFrame = new Mat(); Mat grayImage1 = new Mat(); Mat grayImage2 = new Mat(); Mat differenceImage = new Mat(); Mat thresholdImage = new Mat(); @Override public void run() { while (true) { if (vc.isOpened()) { vc.read(previousFrame); Imgproc.resize(previousFrame, previousFrame, new Size(HEIGHT, WIDTH)); Imgproc.cvtColor(previousFrame, grayImage1, Imgproc.COLOR_BGR2GRAY); vc.read(currentFrame); Imgproc.resize(currentFrame, currentFrame, new Size(HEIGHT, WIDTH)); Imgproc.cvtColor(currentFrame, grayImage2, Imgproc.COLOR_BGR2GRAY); //movement Search Core.absdiff(grayImage1, grayImage2, differenceImage); Imgproc.threshold(differenceImage, thresholdImage, SENSITIVITY_VALUE, 255, Imgproc.THRESH_BINARY); Imgproc.blur(thresholdImage, thresholdImage, new Size(BLUR_SIZE, BLUR_SIZE)); Imgproc.threshold(thresholdImage, thresholdImage, SENSITIVITY_VALUE, 255, Imgproc.THRESH_BINARY); jLabel4.setIcon(new ImageIcon(Mat2bufferedImage(thresholdImage))); searchForMovement(thresholdImage, currentFrame); //Previous frame is now this frame grayImage2.copyTo(grayImage1); ImageIcon i = new ImageIcon(Mat2bufferedImage(previousFrame)); jLabel3.setIcon(i); jLabel3.repaint(); if (stopflag == 0) { vc.release(); break; } } else { System.err.println("Cam Error"); } } }; }; } catch (Exception e) { System.err.println(e.toString()); } t.start(); }//GEN-LAST:event_jButton1ActionPerformed private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed // TODO add your handling code here: stopflag = 0; vc.release(); System.exit(0); }//GEN-LAST:event_jButton2ActionPerformed /** * @param args the command line arguments */ public static void main(String args[]) { /* 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(CamCapture.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(CamCapture.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(CamCapture.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(CamCapture.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 CamCapture().setVisible(true); } }); } // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JButton jButton1; private javax.swing.JButton jButton2; private javax.swing.JLabel jLabel1; private javax.swing.JLabel jLabel2; private javax.swing.JLabel jLabel3; private javax.swing.JLabel jLabel4; private javax.swing.JLabel jLabel5; // End of variables declaration//GEN-END:variables private BufferedImage Mat2bufferedImage(Mat m) { MatOfByte bytemat = new MatOfByte(); Imgcodecs.imencode(".jpg", m, bytemat); byte[] bytes = bytemat.toArray(); InputStream in = new ByteArrayInputStream(bytes); BufferedImage img = null; try { img = ImageIO.read(in); } catch (Exception e) { e.printStackTrace(); } return img; } private void searchForMovement(Mat thresholdImage, Mat frame) { List<MatOfPoint> contours = new ArrayList<MatOfPoint>(); Mat hierarchy = new Mat(); Imgproc.findContours(thresholdImage, contours, hierarchy, Imgproc.RETR_EXTERNAL, Imgproc.CHAIN_APPROX_SIMPLE); Rect objectBoundingRectangle = new Rect(0, 0, 0, 0); for (int i = 0; i < contours.size(); i++) { objectBoundingRectangle = Imgproc.boundingRect(contours.get(i)); if (objectBoundingRectangle.area() > 500) Imgproc.rectangle(frame, objectBoundingRectangle.tl(), objectBoundingRectangle.br(), new Scalar(0, 255, 0)); } ImageIcon i2 = new ImageIcon(Mat2bufferedImage(frame)); jLabel5.setIcon(i2); } }