Book Image

Internet of Things with Raspberry Pi 3

By : Maneesh Rao
Book Image

Internet of Things with Raspberry Pi 3

By: Maneesh Rao

Overview of this book

This book is designed to introduce you to IoT and Raspberry Pi 3. It will help you create interesting projects, such as setting up a weather station and measuring temperature and humidity using sensors; it will also show you how to send sensor data to cloud for visualization in real-time. Then we shift our focus to leveraging IoT for accomplishing complex tasks, such as facial recognition using the Raspberry Pi camera module, AWS Rekognition, and the AWS S3 service. Furthermore, you will master security aspects by building a security surveillance system to protect your premises from intruders using Raspberry Pi, a camera, motion sensors, and AWS Cloud. We'll also create a real-world project by building a Wi-Fi – controlled robot car with Raspberry Pi using a motor driver circuit, DC motor, and a web application. This book is a must-have as it provides a practical overview of IoT’s existing architectures, communication protocols, and security threats at the software and hardware levels—security being the most important aspect of IoT.
Table of Contents (11 chapters)

How image recognition works

Image recognition works on the principal of image classification, where classification is pattern matching within the data. Images are data in the form of two-dimensional matrices.

There are four major steps in the image recognition process. The first is gathering data, the second is organizing data, the third is building a predictive model, and the last one is recognizing image.

Gathering data

When the human eye sees any image, it perceives it as signals, which then fall on the visual cortex of the brain through the eyes. The visual cortex then processes these signals, which results in the experience of the scene. These scenes are then compared with the concepts and objects stored in one's...