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2012-07-06T06:03:05.250
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2012-07-06T06:14:56.040
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<ol> <li>As there are no classes in j2se that can be used to capture video from a webcam, so you need an external library like JMF or JavaCV, to do the same. </li> <li>To install JavaCV you will find instructions on these links: a. ganeshtiwaridotcomdotnp.blogspot.in <a href="http://ganeshtiwaridotcomdotnp.blogspot.in/2011/12/opencv-javacv-eclipse-project.html" rel="nofollow">Link</a> b. code.google.com <a href="http://code.google.com/p/javacv/" rel="nofollow">Link</a></li> <li>The code to capture video in real time from camera: <pre><code>import com.googlecode.javacv.CanvasFrame; import com.googlecode.javacv.FrameGrabber; import com.googlecode.javacv.VideoInputFrameGrabber; import com.googlecode.javacv.cpp.opencv_core.IplImage; import static com.googlecode.javacv.cpp.opencv_core.cvFlip; class GrabberShow implements Runnable { IplImage image; CanvasFrame canvas = new CanvasFrame("Web Cam"); public GrabberShow() { canvas.setDefaultCloseOperation(javax.swing.JFrame.EXIT_ON_CLOSE); } @Override public void run() { FrameGrabber grabber = new VideoInputFrameGrabber(0); // 1 for next camera try { grabber.start(); IplImage img; while (true) { img = grabber.grab(); if (img != null) { cvFlip(img, img, 1);// l-r = 90_degrees_steps_anti_clockwise canvas.showImage(img); } } } catch (Exception e) {} } } public class Main { public static void main(String[] args) { GrabberShow gs = new GrabberShow(); Thread th = new Thread(gs); th.start(); } } </code></pre></li> </ol> hope this helps.
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