Book Image

Augmented Reality for Developers

By : Jonathan Linowes, Krystian Babilinski
Book Image

Augmented Reality for Developers

By: Jonathan Linowes, Krystian Babilinski

Overview of this book

Augmented Reality brings with it a set of challenges that are unseen and unheard of for traditional web and mobile developers. This book is your gateway to Augmented Reality development—not a theoretical showpiece for your bookshelf, but a handbook you will keep by your desk while coding and architecting your first AR app and for years to come. The book opens with an introduction to Augmented Reality, including markets, technologies, and development tools. You will begin by setting up your development machine for Android, iOS, and Windows development, learning the basics of using Unity and the Vuforia AR platform as well as the open source ARToolKit and Microsoft Mixed Reality Toolkit. You will also receive an introduction to Apple's ARKit and Google's ARCore! You will then focus on building AR applications, exploring a variety of recognition targeting methods. You will go through multiple complete projects illustrating key market sectors including business marketing, education, industrial training, and gaming. By the end of the book, you will have gained the necessary knowledge to make quality content appropriate for a range of AR devices, platforms, and intended uses.
Table of Contents (16 chapters)
Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Understanding scale


Let's talk about scale. So far in our discussion we have encountered issues of size and units in several separate situations. Specifically, we are concerned with real-life space, AR device camera views, AR targets, virtual space, and the Unity transform hierarchy. And they are all related.

Real-life scale

Most of us live in the real world, normally (ha ha!). That's the place where things can be measured objectively. With standard units of measurement, we can write specifications and have conversations that are shared, consistent, and repeatable. Standards of measurement are important. And this is good, because human perception is not so reliable. Depending on the context, an object 1 meter long may appear subjectively to be larger or smaller than its actual size until it's measured.

A meter in length is the same whenever and wherever it is used. A caveat is, we must refer to the same units of measurement when sharing numbers. In September 1999, NASA lost its Mars Climate...