Gain insights into using Python to read and write optical labels, explore 1D and 2D barcodes, and fiduciary markers for augmented reality, and discover relevant Python libraries and applications.

Reading _ Writing Machine-Readable Optical Labels with Python .jpg

g.tar.gz

Course

Gradio

Gradio-2

Gradio-3

Machine-readable optical labels are visual representations of data that machines can read and interpret. These labels, often composed of simple geometric shapes or lines, are designed to encode various kinds of information, such as product details or reference numbers.

In this course, you’ll be introduced to Python-based reading and writing of 1D and 2D barcodes and fiduciary markers. You’ll then learn the practical applications of barcodes and fiduciary markers in augmented reality and the creation of user interfaces for reading barcodes. Next, you’ll learn about different Python libraries and their usage to process different optical labels.

By the end of the course, you’ll be proficient in using Python for handling barcodes and fiduciary markers. You’ll also have hands-on experience installing and using different Python libraries to manipulate optical labels.

Using Python for Reading and Writing Optical Labels

We will use the `python-barcode` library in this course to implement barcodes in Python.

* Code 39
* Code 128
* PZN7 (aka: PZN)
* ISBN-13
* ISBN-10
* ISSN






* UPC-A
* EAN-8
* EAN-13
* EAN14
* JAN
* GS1-128

For our example here, we’ll create a few labels using the EAN-13 type barcode for some in-store products. As mentioned before, we can set the first two digits to any number between 20 and 29 for this specific purpose. 





The last digit will be a modulo 10 check digit. We are now free to use the remaining 10 digits as we wish. It is also possible to avoid using the last digit as a check code. In this case, the last digit will be set to 0.





Let’s first import our main libraries. We’ll use the `EAN13` class to create our EAN-13 barcodes. The `ImageWriter` and `SVGWriter` are used to output the rendered barcode to an image or to an SVG file, respectively. 


```
from barcode import EAN13  
from barcode.writer import ImageWriter  
from barcode.writer import SVGWriter  
import random
```

We’ll also use the `random` library to create random strings of digits. Let’s do that first:




Learn how to write various kinds of linear barcodes with the python-barcode library.

Introduction to Machine-Readable Optical Labels

An Overview of Barcodes

Reading and Writing 1D Barcodes With Python

Reading and Writing 2D Barcodes With Python

Creating Fiduciary Markers With Python

Reading Fiduciary Markers With Python

Fiduciary Marker Use Cases

Build a User Interface With Gradio For Reading Barcodes

Build a Barcode Writing Application with Python

Roundup

Appendix

Tracking Moving Objects Using Python

Writing Various Barcodes with Python