Book Image

OpenCV 4 for Secret Agents - Second Edition

By : Joseph Howse
Book Image

OpenCV 4 for Secret Agents - Second Edition

By: Joseph Howse

Overview of this book

OpenCV 4 is a collection of image processing functions and computer vision algorithms. It is open source, supports many programming languages and platforms, and is fast enough for many real-time applications. With this handy library, you’ll be able to build a variety of impressive gadgets. OpenCV 4 for Secret Agents features a broad selection of projects based on computer vision, machine learning, and several application frameworks. To enable you to build apps for diverse desktop systems and Raspberry Pi, the book supports multiple Python versions, from 2.7 to 3.7. For Android app development, the book also supports Java in Android Studio, and C# in the Unity game engine. Taking inspiration from the world of James Bond, this book will add a touch of adventure and computer vision to your daily routine. You’ll be able to protect your home and car with intelligent camera systems that analyze obstacles, people, and even cats. In addition to this, you’ll also learn how to train a search engine to praise or criticize the images that it finds, and build a mobile app that speaks to you and responds to your body language. By the end of this book, you will be equipped with the knowledge you need to advance your skills as an app developer and a computer vision specialist.
Table of Contents (16 chapters)
Free Chapter
1
Section 1: The Briefing
4
Section 2: The Chase
9
Section 3: The Big Reveal
12
Making WxUtils.py Compatible with Raspberry Pi
13
Learning More about Feature Detection in OpenCV
14
Running with Snakes (or, First Steps with Python)

Stopping Time and Seeing like a Bee

"You never can tell with bees."
– A. A. Milne, Winnie-the-Pooh (1926)

The silent threat of radiation is everywhere in James Bond's world. Of course, stolen nuclear warheads are one cause for concern, but the excessively sunny weather is almost as bad, exposing the hero and his lovely traveling companions to an overdose of UV rays. Then, in Moonraker (1979), there is a high-budget mission to outer space, where the radiation hazards include cosmic rays, solar flares, and the turquoise lasers that everyone is shooting.

James Bond is not afraid of all this radiation. Perhaps he is able to take a cool, rational view of it by reminding himself that electromagnetic radiation can refer to various kinds of waves that move at the speed of light, including the rainbow-colored range of visible light we all see...