Book Image

Raspberry Pi Computer Vision Programming - Second Edition

By : Ashwin Pajankar
5 (1)
Book Image

Raspberry Pi Computer Vision Programming - Second Edition

5 (1)
By: Ashwin Pajankar

Overview of this book

Raspberry Pi is one of the popular single-board computers of our generation. All the major image processing and computer vision algorithms and operations can be implemented easily with OpenCV on Raspberry Pi. This updated second edition is packed with cutting-edge examples and new topics, and covers the latest versions of key technologies such as Python 3, Raspberry Pi, and OpenCV. This book will equip you with the skills required to successfully design and implement your own OpenCV, Raspberry Pi, and Python-based computer vision projects. At the start, you'll learn the basics of Python 3, and the fundamentals of single-board computers and NumPy. Next, you'll discover how to install OpenCV 4 for Python 3 on Raspberry Pi, before covering major techniques and algorithms in image processing, manipulation, and computer vision. By working through the steps in each chapter, you'll understand essential OpenCV features. Later sections will take you through creating graphical user interface (GUI) apps with GPIO and OpenCV. You'll also learn to use the new computer vision library, Mahotas, to perform various image processing operations. Finally, you'll explore the Jupyter Notebook and how to set up a Windows computer and Ubuntu for computer vision. By the end of this book, you'll be able to confidently build and deploy computer vision apps.
Table of Contents (15 chapters)

Exploring the Jupyter Notebook for Python 3 programming

The Jupyter Notebook is a web-based interactive interface that works like the interactive mode of Python 3. The Jupyter Notebook has 40 programming languages, including Python 3, R, Scala, and Julia. It provides an interactive environment for programming that can have visualizations, rich text, code, and other components, too.

Jupyter is a fork of the IPython project. All the language-agnostic parts of IPython were moved to Jupyter and the Python-related functionality of Jupyter is provided by an IPython kernel. Let's see how we can install Jupyter on Raspberry Pi:

  1. Run the following commands one by one in Command Prompt:
    sudo pip3 uninstall ipykernel 

    The previous command uninstalls the earlier version of the ipykernel utility.

  2. The following commands install all the required libraries:
    sudo pip3 install ipykernel==4.8.0 
    sudo pip3 install jupyter 
    sudo pip3 install prompt-toolkit==2.0.5

    These commands will install...