ar-mr - 3D User Interfaces for the Real World Lecture #18:...

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1 Spring 2011 CAP6121 – 3D User Interfaces for Games and Virtual Reality ©Joseph J. LaViola Jr. 3D User Interfaces for the Real World Lecture #18: Augmented/Mixed Reality Spring 2011 Joseph J. LaViola Jr. Special thanks to Ivan Poupyrev CAP6121 – 3D User Interfaces for Games and Virtual Reality ©Joseph J. LaViola Jr. Spring 2011 Definitions Augmented reality : Refers to a system in which the user views and acts within an enhanced version of the real world. The enhancements are virtual (computer- generated), and can include objects or information. Mixed reality : Refers to a system that combines real and virtual objects and information.
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2 CAP6121 – 3D User Interfaces for Games and Virtual Reality ©Joseph J. LaViola Jr. Spring 2011 Mixed Reality Continuum Reality Virtuality Augmented Reality (AR) Augmented Virtuality (AV) Mixed Reality (MR) Milgram (1994) CAP6121 – 3D User Interfaces for Games and Virtual Reality ©Joseph J. LaViola Jr. Spring 2011 AR/MR Application Areas Maintenance Training Tourism / Cultural heritage Design / construction Battlefield information display Entertainment
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3 CAP6121 – 3D User Interfaces for Games and Virtual Reality ©Joseph J. LaViola Jr. Spring 2011 AR/MR Technology - Displays See-through HMDs: Video see-through Optical see-through Handheld displays Projection CAP6121 – 3D User Interfaces for Games and Virtual Reality ©Joseph J. LaViola Jr. Spring 2011 AR/MR Technology - Tracking Optical / vision-based tracking AR toolkit ensures portability large number of tracked objects Registration and low latency are crucial for AR systems
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4 CAP6121 – 3D User Interfaces for Games and Virtual Reality ©Joseph J. LaViola Jr. Spring 2011 AR/MR technology - Tracking Sourceless inertial orientation tracking GPS position tracking enables mobile outdoor AR Markerless tracking CAP6121 – 3D User Interfaces for Games and Virtual Reality ©Joseph J. LaViola Jr. Spring 2011 Mobile outdoor AR “Backpack systems” User wears/carries: Computer HMD Inertial tracker GPS unit/antenna Input device(s)
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5 CAP6121 – 3D User Interfaces for Games and Virtual Reality ©Joseph J. LaViola Jr. Spring 2011 Mixed Reality Interfaces KARMA, Feiner, et al. 1993 Azuma (1997) combine real and virtual objects interactive in real time virtual objects are registered in 3D physical world CAP6121 – 3D User Interfaces for Games and Virtual Reality ©Joseph J. LaViola Jr. Spring 2011 Challenges in AR Interfaces Conflict between real
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ar-mr - 3D User Interfaces for the Real World Lecture #18:...

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