title: FaceDetector error exist in btk_FaceFinder_putDCR
body: <p>I am trying to detect a face from a camera picture.</p>
  
  <p>But it always ends up in the following error:</p>
  
  <p>ERROR: Return 0 faces because error exists in btk_FaceFinder_putDCR.</p>
  
  <p>My code:</p>
  
  <pre><code>FaceDetector fd = new FaceDetector(bmp.getWidth(), bmp.getHeight(), 1);
          Face[] faces = new Face[1];
          int nrOfFaces = fd.findFaces(bitmap565, faces);
  </code></pre>
  
  <p>The only problem I see with that code is, that I dont know the 
  Bitmap Config and I dont know ho to convert a Bitmap to the Config.RGB_565 format.</p>
  
  <p>Can anyone help?</p>