Linux Software: QR Code Barcode
Showing posts with label QR Code Barcode. Show all posts
Showing posts with label QR Code Barcode. Show all posts

November 23, 2019

Scan Barcode QR Code From Webcam & Image File in Linux

ZBar bar code reader/scanner. Software to Scan Barcode + QR Code From Webcam & Image File in Linux named ZBar. With ZBar you can decode barcode from file, decode barcode from webcam. Inspite of barcode you can also decode QR code from web camera also. This article will inform to you how to install ZBar and review about it.

Scan Barcode + QR Code From Webcam & Image File in Linux

ZBar - Bar Code Reader program 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 39, Interleaved 2 of 5 and QR Code. These are the Python bindings for the library.

The flexible, layered implementation facilitates bar code scanning and decoding for any application: use it stand-alone with the included GUI and command line programs, easily integrate a bar code scanning widget into your Qt, GTK+ or PyGTK GUI application, leverage one of the script or programming interfaces (Python, Perl, C++) ...all the way down to a streamlined C library suitable for embedded use.

How to Install Zbar - Barcode, QR Code Reader for Linux Desktop

ZBar have been added to linux repository so that you can install directly from software center or you can install ZBar from Terminal by executing these:
sudo apt-get install zbar-tools
Wait until installation completed. You can't open ZBar after install because it is a Terminal based applications.

ZBar Review - Software to Scan Barcode QR Code From Camera

Because of its great function, ZBar is used by many platform. It is command line based tool, very lighweight. The facilities as follow:
  1. cross platform - Linux/Unix, Windows, iPhone®, embedded...
  2. high speed - real time scanning from video streams
  3. small memory footprint
  4. small code size - the core scanner and EAN decoder represent under 1K lines of C code
  5. not limited to images
  6. no floating point operations
  7. suitable for embedded applications using inexpensive processors/hardware
  8. modular components can be used together or separately

How to Scan Barcode / QR Code in Linux Using ZBar

We will practice to scan QR code generated from this trial (you can make a trial too or use the QR code image below to scan):
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Save QR code above as "test.png" to follow this experiment!
ZBar has some command to decode QR code or barcode as follow:
  1. man zbarimg  or  man zbarcam , used to show ZBar manual
  2. zbarimg --help  or  zbarcam --help , used to show ZBar help
  3. zbarimg --version atau zbarcam --version , used to show ZBar installed version
Go to directory where to save the "test.png" file, right click on the blank area and choose "Open in Terminal" , then decode it by typing zbarimg test.png -- You will see result as follow
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November 30, 2018

QtQr Software to Create and Scan QR Code in Linux

QtQr Software to Create and Scan QR Code in Linux. This application is used as QR code generator and QR Code scanner in Linux. Read completely these article below it will show you how to install QtQr, how to create QR Code and scan QR Code also review about QtQr.

QtQr Software to Create and Scan QR Code in Linux

Generate QR Code in linux is easy with this software, if you are here searching for a linux application for creating and decoding QR codes please install QtQR from the install section (you can click the External Downloads link below) or add the PPA to your Ubuntu system.

This is a Qt based software which let's you generate QR codes easily, scan an image file for QR codes and decode them or use your webcam to scan a printed one. Sound interesting? This is useful for generating URL QR codes, among other things.

How to Install QtQr in Linux Mint and Ubuntu

For Linux Mint and Ubuntu user can install QtQr by executing linux command from Terminal:
sudo apt-get install qtqr
Wait until install completed! Now you can open QtQr after install by clicking Start/Menu >> Graphics >> QtQr

QtQr Review - Linux Application to Generate QR Code

QtQr is  a small and powerful linux program for creating and scanning QR code. You can generate QR code from text, email, URL adress, phone number, sms, wifi network and many more. With single click to generate QR Code is very easy to use. Recommended QR Code creator for Linux!

How to Create QR Code in Linux With QtQr

This will demonstrate how to create QR code from URL, so that when someone scan the QR code any application will offer to visit the site. Follow these steps:
  1. Open your QtQr (Start/Menu >> Graphics >> QtQr)
  2. On main window of QtQr, Select data type to URL
  3. Enter URL to be encoded, for example use
  4. For large QR code image, adjust the number of "Pixel Size" to 7 or more
  5. Save the QR code to your computer. Done
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How to Scan QR Code in Linux With QtQr, Desktop QR Code Reader

Now it is time to scan QR code from generated QR code above. Follow these steps to decode QR code in Linux:
  1. Run your QtQr software, hit Ctrl+O to open QR code file. Or you can drag and drop your QR code image into the software. OR you can also click the "Decode" button then choose "Decode from file". You can also decode QR Code from web camera if you have printed QR code.
  2. The result is your QtQr software offer to you to visit the website. Done!
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