Perceived orientation, spatial layout and the geometry of pictures
Pictorial communication in virtual and real environments
Direction judgement error in computer generated displays and actual scenes
Pictorial communication in virtual and real environments
CHI '93 Proceedings of the INTERACT '93 and CHI '93 Conference on Human Factors in Computing Systems
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
The illusionhole with polarization filters
Proceedings of the ACM symposium on Virtual reality software and technology
Perception of elementary graphical elements in tabletop and multi-surface environments
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Shallow-depth 3d interaction: design and evaluation of one-, two- and three-touch techniques
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
E-conic: a perspective-aware interface for multi-display environments
Proceedings of the 20th annual ACM symposium on User interface software and technology
Bringing physics to the surface
Proceedings of the 21st annual ACM symposium on User interface software and technology
Medical education on an interactive surface
ACM International Conference on Interactive Tabletops and Surfaces
Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces
Direct manipulation and the third dimension: co-planar dragging on 3d displays
Proceedings of the 2012 ACM international conference on Interactive tabletops and surfaces
Use your head: tangible windows for 3D information spaces in a tabletop environment
Proceedings of the 2012 ACM international conference on Interactive tabletops and surfaces
Tangible 3D tabletops: combining tangible tabletop interaction and 3D projection
Proceedings of the 7th Nordic Conference on Human-Computer Interaction: Making Sense Through Design
Deconstructing the touch experience
Proceedings of the 2013 ACM international conference on Interactive tabletops and surfaces
Proceedings of Graphics Interface 2013
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Applications with 3D models are now becoming more common on tabletop displays. Displaying 3D objects on tables, however, presents problems in the way that the 3D virtual scene is presented on the 2D surface; different choices in the way the projection is designed can lead to distorted images and difficulty interpreting angles and orientations. To investigate these problems, we studied people's ability to judge object orientations under different projection conditions. We found that errors increased significantly as the center of projection diverged from the observer's viewpoint, showing that designers must take this divergence into consideration, particularly for multi-user tables. In addition, we found that a neutral center of projection combined with parallel projection geometry provided a reasonable compromise for multi-user situations.