Visual homing is possible without landmarks: a path integration study in virtual reality
Presence: Teleoperators and Virtual Environments
Distance Perception and the Visual Horizon in Head-Mounted Displays
ACM Transactions on Applied Perception (TAP)
Judging Perceived and Traversed Distance in Virtual Environments
Presence: Teleoperators and Virtual Environments
Analyses of human sensitivity to redirected walking
Proceedings of the 2008 ACM symposium on Virtual reality software and technology
Transitional environments enhance distance perception in immersive virtual reality systems
Proceedings of the 6th Symposium on Applied Perception in Graphics and Visualization
Cognitive transfer of spatial awareness states from immersive virtual environments to reality
ACM Transactions on Applied Perception (TAP)
A conceptual model of the cognitive processing of environmental distance information
COSIT'09 Proceedings of the 9th international conference on Spatial information theory
The effect of stereo and context on memory and awareness states in immersive virtual environments
Proceedings of the 7th Symposium on Applied Perception in Graphics and Visualization
Perceptually-motivated graphics, visualization and 3D displays
ACM SIGGRAPH 2010 Courses
Perception in graphics, visualization, virtual environments and animation
SIGGRAPH Asia 2011 Courses
Effects of scene density and richness on traveled distance estimation in virtual environments
Proceedings of the ACM SIGGRAPH Symposium on Applied Perception in Graphics and Visualization
A multi-resolution approach for massively-parallel hardware-friendly optical flow estimation
Journal of Visual Communication and Image Representation
Parallel architecture for hierarchical optical flow estimation based on FPGA
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Evaluating Mobile Applications in Virtual Environments: A Survey
International Journal of Mobile Human Computer Interaction
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Distance estimation of visually simulated self-motion is difficult, because one has to know or make assumptions about scene layout to judge ego speed. Discrimination of the travel distances of two sequentially simulated self-motions in the same scene can be performed quite accurately (Bremmer and Lappe 1999; Frenz et al., 2003). However, the indication of the perceived distance of a single movement in terms of a spatial interval results in a depth scaling error: Intervals are correlated with the true travel distance, but underestimate travel distance by about 25% (Frenz and Lappe, 2005). Here we investigated whether the inclusion of further depth cues (disparity/motion parallax/figural cues) in the virtual environment allows more veridical interval adjustment. Experiments were conducted on a large single projection screen and in a fully immersive computer-animated virtual environment (CAVE). Forward movements in simple virtual environments were simulated with distances between 1.5 and 13 m with varying speeds. Subjects indicated the perceived distance of each movement in terms of a depth interval on the virtual ground plane. We found good correlation between simulated and indicated distances, indicative of an internal representation of the perceived distance. The slopes of the fitted regression lines revealed an underestimation of distance by about 25% under all conditions. We conclude that estimation of travel distance from optic flow is subject to scaling when compared to static intervals in the environment, irrespective of additional depth cues.