title: Mobile Vision API new detector frame get Bitmap Image
body: <p>I know similar Question has been asked Before:-
  <a href="https://stackoverflow.com/questions/32299947/mobile-vision-api-concatenate-new-detector-object-to-continue-frame-processing/32314136#32314136">Mobile Vision API - concatenate new detector object to continue frame processing</a></p>
  
  <p>I am receiving the frame but when I call frame.getBitmap() it returns a null object.
  I want to use this bitmap in <a href="https://github.com/tzutalin/dlib-android-app" rel="noreferrer">https://github.com/tzutalin/dlib-android-app</a>
   (Android dlib Library) FaceDet function.</p>