Book Image

Android Application Programming with OpenCV 3

By : Joseph Howse
Book Image

Android Application Programming with OpenCV 3

By: Joseph Howse

Overview of this book

<p>Android Application Programming with OpenCV 3 is a practical, hands-on guide to computer vision and mobile app development. It shows how to capture, manipulate, and analyze images while building an application that combines photography and augmented reality. To help the reader become a well-rounded developer, the book covers OpenCV (a computer vision library), Android SDK (a mobile app framework), OpenGL ES (a 3D graphics framework), and even JNI (a Java/C++ interoperability layer).</p> <p>Now in its second edition, the book offers thoroughly reviewed code, instructions, and explanations. It is fully updated to support OpenCV 3 and Android 5, as well as earlier versions. Although it focuses on OpenCV's Java bindings, this edition adds an extensive chapter on JNI and C++, so that the reader is well primed to use OpenCV in other environments.</p>
Table of Contents (13 chapters)
Android Application Programming with OpenCV 3
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 6. Mixing Java and C++ via JNI

Our goal in this chapter is to rewrite some of our Java classes so that they become thin wrappers around C++ classes. We will use an intermediary framework, Java Native Interface (JNI), which can expose Java and C++ code to each other. Along the way, we will gain a greater understanding of OpenCV's Java and C++ interfaces.

Note

The complete Eclipse project for this chapter can be downloaded from the author's website. The project has the following two versions:

A version for OpenCV 3.x is located at http://nummist.com/opencv/4598_06.zip.

A version for OpenCV 2.x is located at http://nummist.com/opencv/5206_06.zip.