Effects of Interaction-Display Offset on User Performance in Surround Screen Virtual Environments

We present a study exploring the effect of positional offset between the user´s interaction and display frame-of-reference in a surround-screen virtual environment (SSVE). In our experiment, users were asked to match a target color using a 3D color widget under three different display-interaction offset conditions: no offset (i.e., collocation), a three inch offset, and a two foot offset. Our results suggest that collocation of the display and interaction frames-of-reference may degrade accuracy in widget-based tasks and that collocation does not necessarily lead the user to spend more time on the task