Oldenburg Computer Science Series

Univ.-Prof. Dr. Susanne Boll,
Univ.-Prof. Dr. Sebastian Lehnhoff (Hrsg.)

Niels Henze

Camera-based Mobile Interaction with Physical Objects

Despite the rise of smartphones and the ubiquity of digital services, interacting with physical media and physical objects, is still essential in daily life. Printed books are more convenient than E-books and points of interests become particularly interesting if one stands in front of them. Digital services, however, enable use cases that physical media fails to offer. While the digital world is increasingly getting dynamic and interactive - physical media remains static. One cannot read the latest gossip about Madonna with just a CD in the hand. Instead we cur-rently use a search engine to find Madonna’s Facebook page for a virtual meet-up with other fans. There is no easily accessible link that closes the gap between physical objects and digital services. Camera-based mobile interaction techniques that exploit computer vision in smartphone applications enable to use physical objects to access digital services.

This book provides a comprehensive investigation of mobile camera-based interaction tech-niques with a focus on the users perspective. It defines the research field described by the notion 'Mobile Interaction with the Real World' and provides a categorization of the state of the art. Camera-based interaction techniques are systemized and analyzed through user studies. The book presents the design, implementation, and evaluation of three interaction tech-niques: Point and Shoot, Continuous Pointing, and handheld Augmented Reality. The interface design of handheld Augmented Reality applications is analyzed through participatory design and controlled experiments. Further, the book provides an investigation of off-screen visuali-zations for handheld Augmented Reality, which is of particular importance for the small screens of mobile devices. Guidelines to develop camera-based applications for smartphones are derived from extensive empirical work. The guidelines enable developers to choose ap-propriate interaction techniques, implement adequate algorithms, and design usable interfaces.

Bd. 23, XIV, 168 S., Edewecht 2013, € 49,80
ISBN-13 978-3-939704-93-5