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

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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

# Writing data to the PDF417

Below, we can see a simple example of how to generate a PDF417 barcode.



from pdf417gen import encode, render_image

data = """https://educative.io"""

encoded = encode(data)
image = render_image(encoded)

image.save('output/PDF417_edu.png')

**Line 1:** First, we import the `encode()` and `render_image()` functions from the `pdf417gen` library.

**Line 3:** We then define a variable called `data` with our data. In this case, the `data` is the URL of the Educative website.

**Lines 5–6:** The next step is to encode this `data` using the `encode()` function. Once encoded, we can render the barcode using the `render_image()` function. 

**Line 8:** The resulting image is in the Pillow format, as we have seen before. This image can then be saved as an image file. In this case, we save it as a PNG using the `save()` method.

Learn how to write and read PDF417 codes using Python.

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

Reading and Writing PDF417 Codes

Writing data to the PDF417