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)

Tour of the raspi-config command-line utility

We can configure Raspberry Pi by using one of the following three methods:

  • The Raspberry Pi configuration tool in the Raspbian OS menu
  • By altering the content of /boot/config.txt
  • With the raspi-config command-line utility

We will provide a detailed tour of the raspi-config tool in detail in this section. Open the Raspberry Pi command prompt and run the following command:

sudo raspi-config

This will open the Raspberry Pi configuration tool in Command Prompt, as in the following screenshot:

Figure 13.6 – The main menu of the raspi-config utility

The first option is used to change the password for the pi user. The second option in the main menu, Network Options, has the facility to change the way the Raspberry Pi board is connected to the network:

Figure 13.7 – Network Options

The third option in the main menu (Boot Options) details the booting options...