Multi-User Virtual Reality

Multi-Ray Jumping is a comprehensible group navigation technique for collocated users wearing head-mounted displays.


Photoportals build on digital photography as a unifying metaphor for reference-based interaction in 3D virtual environments. Virtual photos and videos serve as three dimensional references to objects, places, moments in time and activities of users.


Implementing an immersive telepresence system that allows distributed groups of users to meet in a shared virtual 3D world.


A projection-based stereoscopic display for six users, which employs six customized DLP projectors for fast time-sequential image display in combination with polarization.


Implementing Multi-Viewer Time-Sequential Stereo Displays Based on Shuttered LCD Projectors


We present a combination of a wave field synthesis system with a multi-viewer stereo display.


We present a method for enabling face-to-face discussions in a novel car interface concept.


An architecture for smooth motion in virtual environments


An interactive stereoscopic display system for two or more collocated users


to correct Non-Linear Distortion for Curved Virtual Showcase Displays



The Virtual Showcase is a novel display device for virtual and augmented reality.


We describe our experiences in the application of the object-capability model for access control to object-manipulation tasks common to collaborative virtual environments.