The QR code on printed receipts has a low recognition rate

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ming lu

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Dec 15, 2017, 2:28:58 AM12/15/17

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the QR code on printed receipts can not be recognized because the image has any defect. the QR code image like attach. How to increase the recognition rate.

qr.jpg

Sean Owen

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Dec 25, 2017, 7:58:22 PM12/25/17

to zxing

Try a light blur / low-pass filter. The white space between the dots isn't allowed and you need the image to blur over it.

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