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I process QR codes with google-vision api, locally (my test device is galaxy s4). Why can I recognise only two, perhaps three at most at a time (during one frame), given more clearly visible in the viewport? Is it because my device allows only so many codes to be processed during a frame? I tried lowering framerate to as low as 5 fps (in CameraSource), to no avail (and it seems it apparently doesn't obey it, as the preview is smooth). I haven't seen any setting related to this, either.

Alireza
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Antek
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1 Answers1

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The Barcode API does have a limit on the number of QR codes it can read within a single frame, as you've found. It has nothing to do with the quality of the image or the device.

pchx
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  • and yeah, even dividing the whole frame into subframes doesn't help either. I will edit the question accordingly. Can you please provide some docs for it? I will accept it as the answer – Antek Jul 20 '17 at 07:15