Hi, I am writing an application to decode large data sets (as much as 4,500 characters) in a QR code. I have successfully been able to decode a QR code with 1,695 characters but when I try to decode a QR code with 1,710 characters (or more) it fails. I am using the IMAQ Read QR Code VI from the Vision Development Module. There is no error message generated from the VI, it simply ouputs an empty data string. The input parameters to the IMAQ Read QR Code VI are the same as when I read the QR code with 1,695 characters. The Matrix Size parameter is set to "Auto Detect" to account for the possibility of a larger matrix size. QR code parameters used when creating the QR code are: Cell size = 3x3 pixels Error Correction = M Data Type = Numeric A version 36 (161x161) QR code with M level error correction should be able to contain 4,588 characters. I would like to be able to decode a QR code of this size. Is the "IMAQ Read QR Code" VI limited to only being able to decode some of the smaller QR codes? Any thoughts as to why I cannot decode larger QR codes? I am attaching the QR code that was not successfully decoded. Thanks, Brooks_LV

LabVIEW

QR Code Reader - Encoding/Decoding Large Data Sets

Brooks,

Sorry for the delay. I requested more information, but I need to follow up again. I'm setting a reminder now, and will report back once I've heard from RnD.

Tanner B.
Systems R&D Engineer - Aerospace, Defense, and Government
National Instruments

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Hi Tanner,

Still waiting to hear from you...

Thanks,

Brooks

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LabVIEW

QR Code Reader - Encoding/Decoding Large Data Sets

Re: QR Code Reader - Encoding/Decoding Large Data Sets

Re: QR Code Reader - Encoding/Decoding Large Data Sets