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@dulichan
Created December 10, 2012 09:54
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Grabbing a Photo from web cam from Java
package com.test.frame;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.Date;
import java.util.Iterator;
import java.util.Vector;
import javax.media.Buffer;
import javax.media.CannotRealizeException;
import javax.media.CaptureDeviceInfo;
import javax.media.CaptureDeviceManager;
import javax.media.Manager;
import javax.media.NoPlayerException;
import javax.media.Player;
import javax.media.control.FrameGrabbingControl;
import javax.media.format.VideoFormat;
import javax.media.util.BufferToImage;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
/**
This class needs the jmf library to work
*/
public class FrameGrab extends JPanel implements ActionListener {
private Player player = null;
private BufferedImage buffImg = null;
private Timer timer;
private FrameGrabbingControl frameGrabber;
public FrameGrab() {
// Create capture device
Vector devices = CaptureDeviceManager.getDeviceList(null);
CaptureDeviceInfo cdi = null;
for (Iterator i = devices.iterator(); i.hasNext();) {
cdi = (CaptureDeviceInfo) i.next();
/*
* Get the first Video For Windows (VFW) capture device. Use the JMF
* registry tool in the bin directory of the JMF distribution to
* detect available capture devices on your computer.
*/
if (cdi.getName().startsWith("vfw:"))
break;
}
try {
player = Manager.createRealizedPlayer(cdi.getLocator());
player.start();
} catch (NoPlayerException e) {
e.printStackTrace();
} catch (CannotRealizeException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// start the Timer with 3s intervals
new Timer(3000, this).start();
// Grab a frame from the capture device
frameGrabber = (FrameGrabbingControl) player
.getControl("javax.media.control.FrameGrabbingControl");
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
if (buffImg != null) {
g.drawImage(buffImg, 0, 0, this);
}
}
private void grab() {
Buffer buf = frameGrabber.grabFrame();
// Convert frame to an buffered image so it can be processed and saved
Image img = (new BufferToImage((VideoFormat) buf.getFormat())
.createImage(buf));
buffImg = new BufferedImage(img.getWidth(this), img.getHeight(this),
BufferedImage.TYPE_INT_RGB);
Graphics2D g = buffImg.createGraphics();
g.drawImage(img, null, null);
g.setColor(Color.darkGray);
g.setFont(new Font("Tahoma", Font.PLAIN, 12).deriveFont(AffineTransform
.getRotateInstance(1.57)));
g.drawString((new Date()).toString(), 5, 5);
}
public static void createAndShowGui() {
JFrame frame = new JFrame("Frame Grabber");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(new FrameGrab());
frame.setSize(328, 270);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
/*
* (non-Javadoc)
*
* @see
* java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
*/
public void actionPerformed(ActionEvent e) {
grab();
repaint();
}
}
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