Book Image

Raspberry Pi for Python Programmers Cookbook - Second Edition

Book Image

Raspberry Pi for Python Programmers Cookbook - Second Edition

Overview of this book

Raspberry Pi cookbook for Python Programmers is a practical guide for getting the most out of this little computer. This book begins by guiding you through setting up the Raspberry Pi, performing tasks using Python 3 and introduces the first steps to interface with electronics. As you work through each chapter you will build up your skills and knowledge and apply them as you progress throughout the book, delving further and further into the unique abilities and features of the Raspberry Pi. Later, you will learn how to automate tasks by accessing files, build applications using the popular Tkinter library and create games by controlling graphics on screen. You will harness the power of the built-in graphics processor by using Pi3D to generate your own high quality 3D graphics and environments. Connect directly to the Raspberry Pi’s hardware pins to control electronics from switching on LEDs and responding to push buttons right through to driving motors and servos. Learn how to monitor sensors to gather real life data and to use it to control other devices, and view the results over the Internet. Apply what you have learnt by creating your own Pi-Rover or Pi-Hexipod robots. Finally, we will explore using many of the purpose built add-ons available for the Raspberry Pi, as well as interfacing with common household devices in new ways.
Table of Contents (18 chapters)
Raspberry Pi for Python Programmers Cookbook - Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Hardware and Software List
Index

Discover and experiment with OpenCV


The OpenCV library is an extensive library aimed at providing real-time computer vision processing across multiple platforms. Essentially, if you want to do any serious image processing, object recognition, or analysis, then OpenCV is a perfect place to get started.

Fortunately, the latest release of OpenCV (version 3) has added support for interfacing via Python 3. Although performing real-time video processing can often require a computer with a powerful CPU, it will run on relativity limited devices such as the original Raspberry Pi (version 1). Using the more powerful Raspberry Pi 2 is highly recommended for the following recipes.

The concepts and underlying methods behind image and video processing can get rather complicated. This first recipe shall demonstrate how to work with OpenCV and most importantly provide an easy way to visualize various stages that may be used for processing images.

When performing tests with the camera ensure you have suitable...