zbarcam | Real time Barcode and QR Code scanner | Barcode Processing library
kandi X-RAY | zbarcam Summary
kandi X-RAY | zbarcam Summary
Real time Barcode and QR Code scanner using the camera. It's built on top of Kivy and works with both pyzbar or zbarlight.
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Top functions reviewed by kandi - BETA
- Decode an image
- Validate the given code types
- Setup the camera
- Remove a shot button
- Invoked when the camera is ready
- Detect QRCode frame
- Decode a QZ barcode frame
- Rotate a pil image
- Returns True if this is an Android instance
- Read file contents
- Run setup
zbarcam Key Features
zbarcam Examples and Code Snippets
#:import ZBarCam kivy_garden.zbarcam.ZBarCam
BoxLayout:
orientation: 'vertical'
ZBarCam:
id: zbarcam
# optional, by default checks all types
code_types: 'QRCODE', 'EAN13'
Label:
size_hint: None, None
make system_dependencies
pip install zbarcam
from kivy_garden.zbarcam import ZBarCam
Community Discussions
Trending Discussions on zbarcam
QUESTION
ANSWER
Answered 2021-Jul-28 at 22:52In order for everything to work correctly and the example below to run, you need to perform the following steps:
On your PC:
QUESTION
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?
...ANSWER
Answered 2020-Nov-14 at 21:36I 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.
Input:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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No vulnerabilities reported
Install zbarcam
You can use zbarcam like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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