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)

Working with a USB webcam

Cameras are image sensors. That said, analog cameras and motion film cameras record images on films. Digital cameras have digital sensors to capture the image and these are stored in electronic formats on various types of storage mediums. A subset of digital cameras is USB webcams. These webcams, as their name indicates, can be interfaced to a computer via USB, hence the name, USB webcam. In this section, we will learn about the interfacing of USB webcams with the Raspberry Pi and programming using shell scripts, Python 3, and OpenCV in detail.

Note

All these webcams work with Raspberry Pi boards. However, a few webcams may have issues. The https://elinux.org/RPi_USB_Webcams URL has a list of many webcams and details regarding compatibility.

All the programs in this book are tested with the RPi 4B and a Logitech C310 webcam. You can view its product page at https://www.logitech.com/en-in/product/hd-webcam-c310.

Attach the USB webcam to the RPi...