Unable to scan large aztec code

[rajkshah14]

Hello All,

I am trying to scan Aztec code of Deustche bahn. Sample code can be found here

https://www.nickles.de/user/images/14/b7ac62ccd690c796b461452f0e17edf32c032bb3.jpg

Problem is app is not able to scan it. Any suggestions?

TIA

[srowen]

I'm not sure. Could be that it's small and relatively hard to detect. If you debug it and see a particular decoding problem, let me know. If it's just not detecting, I think that's just how it goes for this detector.

[AndrewSpec]

I've got the same problem. Larger Aztec code can't be decoded (or detected).

[Thomeya]

Has someone been able to solve the problem?
Scanning the Aztec on Android Oreo works, but not on Marshmellow and below.
The ZXing Online Decoder does not recognize the AztecCode either.
Thank you for any hints

[LuciusLuWroc]

I propose so experiment on your PC. Clone ZXing.NET from GitHub repository. Open it at VS (2017/2015/2013). Run WindowsFormsDemo project. when WindowsFormsDemo window is opened, minimalize VS IDE, open any Image Browser, load aztec code image in Image Browser. In WindowsFormsDemo open Decoder tab, in background the window must be opened and maximalized Image Browser with loaded your Aztec Code. Click "Screen Capture" button. If code not detected, try decrease or increase image in Image Browser (zoom in/zoom out) and repeat clicking at "Screen Capture".
My experiences says: at some size of aztec code image, ZXing library can decode aztec code (sometimes) and other sizes the same image are not decoded.
My question is WHY?