Android Application Programming with OpenCV

by Joseph Howse

Overview In Detail Take a smartphone from your pocket, and within a few seconds, you can snap a photo, manipulate it, and share it with the world. You have just achieved mass production of image data. With a computer vision library such as OpenCV, you can analyze and transform copious amounts of image data in real time on a mobile device. The upshot to this is that you, as developers, can provide mobile users with many new kinds of images, constantly highlighting certain visual features that are of artistic or practical interest. Android is a convenient platform for such experiments because it uses a high-level language (Java), it provides standardized interfaces for sharing image data between applications, and it is mostly open source, so everyone can study its implementation. Android Application Programming with OpenCV is a practical, hands-on guide that covers the fundamental tasks of computer vision—capturing, filtering, and analyzing images-with step-by-step instructions for writing both an application and reusable library classes. Android Application Programming with OpenCV looks at OpenCV's Java bindings for Android and dispels mysteries such as which version of these bindings to use, how to integrate with standard Android functionality for layout, event handling, and data sharing, and how to integrate with OpenGL for rendering. By following the clear, concise, and modular examples provided in this book, you will develop an application that previews, captures, and shares photos with special effects based on color manipulation, edge detection, image tracking, and 3D rendering.Beneath the application layer, you will develop a small but extensible library that you can reuse in your future projects. This library will include filters for selectively modifying an image based on edge detection, 2D and 3D image trackers, and adapters to convert the Android system's camera specifications into OpenCV and OpenGL projection matrices. If you want a quick start in computer vision for Android, then this is the book for you. By the end of Android Application Programming with OpenCV, you will have developed a computer vision application that integrates OpenCV, Android SDK, and OpenGL. What you will learn from this book

115 pages, Paperback

First published January 1, 2013

About the author

Joseph Howse writes fiction, as well as technical books on computer programming and image analysis. He lives in a Nova Scotian fishing village, where he chats with his cats and nurtures an orchard of hardy fruit trees. His debut novel, The Girl in the Water, has won the 2023 Independent Press Award for Literary Fiction, the 2023 IAN Awards for Outstanding Multicultural Fiction, and the 2023 IPPY Awards Bronze Medal for Best Regional Ebook (Fiction). He is currently working on a sequel.

Reviews

[Adrian · Rating 4 out of 5]

I received a review copy from PacktPub.com
The book does a nice job of introducing the reader to OpenCV under Android. It starts with the basics (installing, setting up the development environment, and compiling), then moves on to capturing images, applying filters/effects, tracking in 2D, tracking in 3D, and finally rendering 3D objects on top of a camera image for Augmented Reality.
The code in the book is provided for easy compiling, and is nicely commented for easy reading.

[Elie De Brauwer · Rating 2 out of 5]

The book is getting a bit old at this moment. Initially it was however a good exercise trying to port some of the exercises to more modern platforms.