Qr Code decoder

Question

Is there any way to write a QR-code decoder in C++ from scratch? I have done that already in Python using SimpleCv module to access the webcam.

Thanks

Because I don't know if it's possible to have simple computer vision in C++ — lpostula
– lpostula, Commented May 5, 2012 at 17:11
Before you can decode a QR code, you must first take a picture of one. It's not clear which of these two things your question is about. The QR decode is platform-independent, but interfacing with a camera is 100% platform-dependent, and you don't mention your platform. — David Schwartz
– David Schwartz, Commented May 5, 2012 at 17:40

Simson · Accepted Answer · 2020-03-17 00:16:34Z

8

I'm one of the core SimpleCV developers. We used to support ZXing, but the problem was it was java based and quite slow running outside of it's own application. As of last week I updated the code to support Zbar. It's c++ based, and is very fast and much easier to install and run. They also have examples on how to run your own code and should work with OpenCV if you need much faster speeds.

Hope this helps.

edited Mar 17, 2020 at 0:16

Simson

3,5732 gold badges29 silver badges50 bronze badges

answered Jun 4, 2012 at 23:05

xamox

2,8194 gold badges29 silver badges30 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

lpostula Over a year ago

Hey Xamox, Everytyhing fine? with the GSoC Student? I gonna take a look at those example thanks you

xamox Over a year ago

Yeah, the GSoC students are doing some cool things. A mobile app for android should be out soon. If you do want to use zbar, on ubuntu 12.04 you can install it with just 'sudo apt-get install python-zbar'

vy32 Over a year ago

I have had problems getting ZBar running on macOS

smparkes · Accepted Answer · 2012-05-05 21:59:05Z

5

ZXing has a C++ detector and decoder. All you need to give it is the RGB or luminance image data as a vector.

(Full disclosure: I'm the primary maintainer of the ZXing C++ QR port at this point.)

answered May 5, 2012 at 21:59

smparkes

14.1k5 gold badges39 silver badges63 bronze badges

9 Comments

lpostula Over a year ago

Everybody is talking about ZXing, but There is no proper documentation about how to use it maybe you can send me a link for that or so?

smparkes Over a year ago

Yeah, there's not a lot of documentation. I think most people read the sample apps and the source. They're fairly easy to read. Not ideal, but certainly easier than trying to develop a solution from scratch.

Vikram Ranabhatt Over a year ago

@smparkes I wanted to use QR Code Library for Windows Store App in C++.I want to generate QR Code based on Three Info WiFI SSID,WIFI Security and Password. Plz guide me how to it.I am not able to configure Zxing in my project

kirill_igum Over a year ago

here is an example of using zxing in c++ code wiki.ssrrsummerschool.org/…

smparkes Over a year ago

The version in the zxing repo has been retired. It was an initially-automated translation of the java that was then manually curated. It was removed when the maintainer (me, at the time) moved on. Reading the description of the second repo, it's based on the last C++ commit in the main repo that someone found useful ...

|

technomage · Accepted Answer · 2012-05-05 17:11:24Z

0

I'm using ZXing for Java, but on their website it says they have partial support for C++ http://code.google.com/p/zxing/

answered May 5, 2012 at 17:11

technomage

5254 silver badges15 bronze badges

Collectives™ on Stack Overflow

Qr Code decoder

3 Answers 3

3 Comments

9 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

3 Comments

9 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related