Hi
I write an application for Motorola Xoom tablet with Android 3.1 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.
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.
But I'm facing a problem:
1. The ZXing app makes some sort of continous autofocus. It starts
the
autofocus and when it is finished it automatically starts the
autofocus again. But this method somehow makes the camera
brightness
settings too bright, so that the camera cannot recognize the QR
Codes because the image is almost totally white. Disabling the
autofocus solves the problem, but I need autofocus because otherwise
the recognition of the QR Codes is only possible at a certain
distance.
- How can I change the brightness settings of the camera?
- Does somebody know another possibility for autofocus?
Any help is highly appreciated!
Thanks.
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