title: Better quality for camera preview frame
body: <p>I write an application for Motorola Xoom tablet with Android 3.1 for my master thesis that can scan multiple QR Codes in real time with it's camera and that displays additional information in the display over recognised QR Codes.</p>
  
  <p>The recognition is done with the ZXing android app (http://code.google.com/p/zxing/), I basically just changed the code of the ZXing app so that it can recognise multiple QR Codes at the same time and can do this scan continually, without freezing after a successful scan like the original app does. So my app is basically the ZXing app with continous scanning of multiple QR Codes.</p>
  
  <p>But I'm facing a problem:</p>
  
  <ol>
  <li><p>The recognition rate of QR Codes with the built in camera is not
  very good. The ZXing app uses the pictures that it gets from the
  camera preview. But these pictures do not have a very good quality.
  Is there any possibility to make the camera preview making better
  quality pictures?</p>
  
  <p>P.S. I also tried to make real snapshots with camera.takePicture()
  to get a better quality, but it takes too long to take the picture
  so the real time experience for the user is lost.</p></li>
  </ol>
  
  <p>Any help is highly appreciated!</p>
  
  <p>Thanks.</p>