zbar | open source software suite for reading bar codes | QRCode Processing library

 by   mchehab C Version: 0.23.92 License: LGPL-2.1

kandi X-RAY | zbar Summary

kandi X-RAY | zbar Summary

zbar is a C library typically used in Utilities, QRCode Processing applications. zbar has no bugs, it has no vulnerabilities, it has a Weak Copyleft License and it has low support. You can download it from GitHub.

ZBar Bar Code Reader is an open source software suite for reading bar codes from various sources, such as video streams, image files and raw intensity sensors. It supports EAN-13/UPC-A, UPC-E, EAN-8, Code 128, Code 93, Code 39, Codabar, Interleaved 2 of 5, QR Code and SQ Code. Included with the library are basic applications for decoding captured bar code images and using a video device (eg, webcam) as a bar code scanner. For application developers, language bindings are included for C, C++, Python 2 and Perl as well as GUI widgets for Qt, GTK and PyGTK 2.0. Zbar also supports sending the scanned codes via dbus, allowing its integration with other applications.

            kandi-support Support

              zbar has a low active ecosystem.
              It has 706 star(s) with 165 fork(s). There are 30 watchers for this library.
              It had no major release in the last 12 months.
              There are 85 open issues and 70 have been closed. On average issues are closed in 119 days. There are 5 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of zbar is 0.23.92

            kandi-Quality Quality

              zbar has 0 bugs and 0 code smells.

            kandi-Security Security

              zbar has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              zbar code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              zbar is licensed under the LGPL-2.1 License. This license is Weak Copyleft.
              Weak Copyleft licenses have some restrictions, but you can use them in commercial projects.

            kandi-Reuse Reuse

              zbar releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.
              It has 2301 lines of code, 205 functions and 51 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of zbar
            Get all kandi verified functions for this library.

            zbar Key Features

            No Key Features are available at this moment for zbar.

            zbar Examples and Code Snippets

            No Code Snippets are available at this moment for zbar.

            Community Discussions


            Firebase crashlytics not able to read crash reports
            Asked 2022-Apr-11 at 14:08

            I have configured crashlytics as per Firebase Documentation https://firebase.google.com/docs/crashlytics/get-started?platform=android. But crash reports not generated and uploaded to server.

            Kindly refer my build details.

            Here is our project-level build.gradle



            Answered 2022-Apr-11 at 14:08

            There was another utility logger library initialized in the application class that prevented crashlytics from collecting log. https://github.com/hypertrack/hyperlog-android

            Also the initialization & manifest part is not necessary unless you want to explicitly enable/disable crashlytics working.

            Source https://stackoverflow.com/questions/71815836


            Do libraries compiled with MinGW work with MSVC?
            Asked 2022-Jan-26 at 07:37

            I would use a MinGW library in Visual Studio project.

            How my system is built:

            I downloaded ZBar library for my Windows 10 system ( zbar-0.23.91-win_x86_64-DShow.zip
            This is the link: https://linuxtv.org/downloads/zbar/binaries/).

            I have these files in the folder of lib and bin:

            • libzbar.a
            • libzbar.dll.a
            • libzbar.la
            • libzbar-0.dll

            Error when build:
            error LNK2019: unresolved external symbol __mingw_vsnprintf referenced in snprintf

            My question
            Do libraries compiled with MinGW work with MSVC?



            Answered 2021-Nov-23 at 13:05

            The problem is that the libraries have been compiled with mingw while I need to compile them in an mscv project.

            The solution was to rebuild the library with Visual Studio.

            It was possible to use everything without problems.

            Source https://stackoverflow.com/questions/70022460


            Fragment not working properly after enable the progaurd
            Asked 2021-Aug-18 at 10:41

            I have fragment which contain recyclerview. if progaurd was not enabled everything works fine. if i enable the progaurd then data coming from API is not setting. if i put breakpoint it's not reaching the constructor but fragment is setting,recyclerview showing null data.

            I have added progaurd rules also please check



            Answered 2021-Aug-18 at 10:41

            i found the issue. and its resolved. when progaurd is enabled firebase class files are deleted so i added one rule and then its resolved.

            Source https://stackoverflow.com/questions/68768166


            Pyzbar recognizes EAN-13 barcode as PDF417?
            Asked 2021-May-07 at 13:57

            I'm trying to build a realtime barcode reader using pyzbar. I have only EAN-13 barcodes and some of them are read properly but some are recognized as PDF417 and I get this message: WARNING: .\zbar\decoder\pdf417.c:89: : Assertion "g[0] >= 0 && g[1] >= 0 && g[2] >= 0" failed How to increase efficiency? Maybe there is another python library which I can use?

            This is my code:



            Answered 2021-May-07 at 13:57

            If you only have EAN-13, you could specify that so pyzbar would only check for EAN-13. You can specify the desired codes in a list to the parameter symbols when calling decode(...).

            Source https://stackoverflow.com/questions/67436051


            reading decoded zbar element messages from gst pipeline bus
            Asked 2021-Mar-17 at 23:14

            Using the example CLI (command-line-interface) pipeline from the documentation:



            Answered 2021-Mar-17 at 23:14

            After not finding anything, anywhere online, I decided to read the manual again to get a better understanding of the mechanisms behind. The answer was quite simple: message.get_structure().to_string()

            Also we can probe when this is triggered by seeing when t == Gst.MessageType.ELEMENT

            Source https://stackoverflow.com/questions/66573365


            QR code detection with ZBar from console fails for valid QR codes (ZBarCam from camera detects them fine)
            Asked 2020-Nov-14 at 21:36

            I used Zbar (and ZXing) to read the QR code in many images like the below one, but both failed to detect it. I think I need some transformation, because when I use ZBarImg from console, it fails. On the other side, when I use ZBarCam and I put the document in front of the webcam on my laptop, it detects and decodes QR code instantly.

            There are images that QR is detected correctly and images really similar to the successful ones that fail.

            I tried to use ImageMagick to resize the image, remove borders, greyscale, blur it, deskew, multiple scripts from @fmw42 "Fred's ImageMagick Scripts" (unperspective...). Nothing helped. I judge it has to be some simple transformation, because ZBarCam does it almost instantly.

            Do you have any idea?



            Answered 2020-Nov-14 at 21:36

            I am not sure what you have tried in Imagemagick, but my unperspective will not help this image. It will not correct for wrinkles.

            But here is what I would do. First threshold, then apply morphology. The use connected components to get get the bounding box of QR code block. The crop the QR code out of the original image and use morphology to make the black regions more distinct.


            Source https://stackoverflow.com/questions/64831824


            Overaly image functionality for cn1-codescan lib
            Asked 2020-Oct-30 at 06:04

            I am using this lib https://github.com/codenameone/cn1-codescan to scan QR codes in my application. As I understand there is no functionality to change scanning/camera view right now in this lib

            Currently, scanning view for Android it is just fullscreen camera view and for iOS smth like this http://zbar.sourceforge.net/iphone/userguide/scanning.html

            Is there any way to add an overall image or change that camera view? Or is there any plans to add some LayredPane to the camera view in this lib?



            Answered 2020-Oct-30 at 06:04

            This won't work for cn1-codescan since that library is implemented as an external native view. So we're effectively leaving Codename One to perform the scan. You can implement this natively within the library.

            Alternatively you can build a library that uses a widget approach instead of moving to a separate activity/view like the current solution. If it uses a peer component (like the camera kit or the Google Maps cn1libs) then you can implement overlays in Codename One.

            Notice that we only use zbar on iOS and on Android we use an activity which uses an external app to do the scanning. There's a 3rd party QR scanner (from Little Monkey) which embeds an Android implementation into the cn1lib. I'm not sure about the overlay implementation there.

            Source https://stackoverflow.com/questions/64598505


            Decode a qr-code in Python 3.6 in Anaconda 4.8.3 on 64 bit Windows?
            Asked 2020-Aug-20 at 16:29

            How can I decode a qr code in python 3.6 in Anaconda 4.8.3 a Windows 10 Pro N 64 bit installation?

            Most solutions require Pillow with zbar. However, it appears zbar is only available on 32bit windows installations. Furthermore, pip install zbarlight yields:

            ERROR: No matching distribution found for pyzbarlight

            To try and decode a qr code in python 3.6 in Anaconda 4.8.3 on a Windows 10 Pro N 64 bit device, I tried the following code:



            Answered 2020-Aug-07 at 09:41

            Windows error message

            If you see an ugly ImportError when importing pyzbar on Windows you will most likely need the Visual C++ Redistributable Packages for Visual Studio 2013. Install vcredist_x64.exe if using 64-bit Python, vcredist_x86.exe if using 32-bit Python.

            visit and read please here https://pypi.org/project/pyzbar/ or github homepage https://github.com/NaturalHistoryMuseum/pyzbar

            I use Ubuntu for my purposes, so I cannot check this out, but in home project README they give information about ugly ImportError. If they talk about 64 bit installation, then pyazbar works on 64-bit Windows, please doublecheck that Visual C++ Redistributable Packages for Visual Studio 2013 is properly installed and other requirements are satisfied also.

            Source https://stackoverflow.com/questions/63296571


            How to get Zxing in python working with Heroku?
            Asked 2020-Aug-09 at 12:50

            I am deploying a python flask app to heroku which uses Zxing to read qr codes(scan them) and give out the data on them, however Zxing requires Java on the heroku environment.

            Zxing : https://github.com/dlenski/python-zxing

            Error with Zxing



            Answered 2020-Aug-09 at 12:50

            I have managed to solve my error by adding the buildpack

            Source https://stackoverflow.com/questions/63324973


            import pyzbar.pyzbar - Unable to find zbar shared library
            Asked 2020-Aug-03 at 04:49

            I want to make a script for detecting and reading QR codes from photos. I would like to use PyZbar for that, but I have a problem with some errors.

            I'm working in google colaboratory



            Answered 2020-Aug-03 at 04:49

            Before you can !pip install pyzbar, you need to install libzbar with this command.

            Source https://stackoverflow.com/questions/63217735

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install zbar

            You can download it from GitHub.


            Bugs can be reported on the project page:.
            Find more information at:

            Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items

            Find more libraries

            Stay Updated

            Subscribe to our newsletter for trending solutions and developer bootcamps

            Agree to Sign up and Terms & Conditions

            Share this Page

            share link

            Explore Related Topics

            Consider Popular QRCode Processing Libraries


            by Tamsiree


            by x-hw


            by claudiodangelis


            by sylnsfar


            by bingoogolapple

            Try Top Libraries by mchehab


            by mchehabC


            by mchehabShell


            by mchehabJavaScript