QR codes are everywhere these days, but how are they made? You can create your own QR code in Python and even decode QR codes. In this tutorial we will learn about how to generate and decode QR-code (Quick Response Code) using qrcode and python-opencv
pip install qrcode[pil]
pip install python-opencv
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Welcome to my Blog , In this article, you are going to learn the top 10 python tips and tricks.
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Welcome to my Blog, In this article, we will learn python lambda function, Map function, and filter function.
Lambda function in python: Lambda is a one line anonymous function and lambda takes any number of arguments but can only have one expression and python lambda syntax is
Syntax: x = lambda arguments : expression
Now i will show you some python lambda function examples:
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Nowadays QR Code scanners have become popular because of their huge usage. QRcode stores some information in it. We can detect the QRcode from the image and we can decode the data in it. Mostly we can see QR codes are used by all e-payment apps and by their customers and every manufacturing product will have the product description in the form of a QRcode By just scanning the QRcode we will get info of that product. In this article, we will try to generate a QRcode and test a QRcode scanner with a few lines of code using the OpenCV modules pyzbar and qrcode.
Now, we will implement our program on QR Code creation.
import numpy as np
from google.colab.patches import cv2_imshow
Pyzbar is an OpenCV module that is used to decode the QRcode and it is distributed under MIT license. Using this library it illustrates type: whether it is barcode or QRcode, data: the alphanumeric information is hidden in QRcode, and location: edges of the QRcode in the image.
pip install pyzbar
In the below code snippet we are installing the dependencies of the pyzbar library.
!apt install [libzbar](http://libzar/)
Creating a QR code scanner
img = qrcode.make('[https://analyticsindiamag.com/](https://analyticsindiamag.com/)')
image = cv2.imread("/content/qrcode_test.png")
Generated QR codePIN IT
Here we generated a QRcode code and I stored the Analytics India magazine link in this QRcode so that when scanning this QRcode the link appears.
image = cv2.imread("/content/download (13).jpg")
scan = pyzbar.decode(image)
for obj in scan:
print("Data:", obj.data, "\n")
Data = obj.data
Scanning QR codePIN IT
Here you can see we are getting the output type as QRcode and Data is the link we have given in the above snippet and we can try with any QRcode and it scans the information from the QRcode.
In this article, we demonstrated how to generate our own QRcode and how to scan QRcode and display information from it. Using OpenCV modules and a few lines of code in python we implemented the above code snippets.
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Learn Free how to create a virtual pen and eraser with python and OpenCV with source code and complete guide. This entire application is built fundamentally on contour detection. It can be thought of as something like closed color curves on compromises that have the same color or intensity, it’s like a blob. In this project we use color masking to get the binary mask of our target color pen, then we use the counter detection to find the location of this pen and the contour to find it.
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In this tutorial, we will learn how to use
imread() method of OpenCV-Python in detail and different ways to load an image using
Table of Contents
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