Touch Screens Now Offer Compelling Uses
IEEE Software
Improving menu placement strategies for pen input
GI '04 Proceedings of the 2004 Graphics Interface Conference
Low-cost multi-touch sensing through frustrated total internal reflection
Proceedings of the 18th annual ACM symposium on User interface software and technology
Informing the Design of Direct-Touch Tabletops
IEEE Computer Graphics and Applications
UIST '06 Proceedings of the 19th annual ACM symposium on User interface software and technology
Shift: a technique for operating pen-based interfaces using touch
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Lucid touch: a see-through mobile device
Proceedings of the 20th annual ACM symposium on User interface software and technology
Hand occlusion with tablet-sized direct pen input
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
User-defined gestures for surface computing
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Occlusion-aware menu design for digital tabletops
CHI '09 Extended Abstracts on Human Factors in Computing Systems
Proceedings of Graphics Interface 2009
Interactions in the air: adding further depth to interactive tabletops
Proceedings of the 22nd annual ACM symposium on User interface software and technology
Analysis of natural gestures for controlling robot teams on multi-touch tabletop surfaces
Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces
Hand distinction for multi-touch tabletop interaction
Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces
ShadowGuides: visualizations for in-situ learning of multi-touch and whole-hand gestures
Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Understanding users' preferences for surface gestures
Proceedings of Graphics Interface 2010
HandsDown: hand-contour-based user identification for interactive surfaces
Proceedings of the 6th Nordic Conference on Human-Computer Interaction: Extending Boundaries
ACM International Conference on Interactive Tabletops and Surfaces
Eden: a professional multitouch tool for constructing virtual organic environments
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
FingerGlass: efficient multiscale interaction on multitouch screens
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Gestures in the wild: studying multi-touch gesture sequences on interactive tabletop exhibits
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Medusa: a proximity-aware multi-touch tabletop
Proceedings of the 24th annual ACM symposium on User interface software and technology
Extended multitouch: recovering touch posture and differentiating users using a depth camera
Proceedings of the 25th annual ACM symposium on User interface software and technology
A case study of object and occlusion management on the eLabBench, a mixed physical/digital tabletop
Proceedings of the 2013 ACM international conference on Interactive tabletops and surfaces
Arpège: learning multitouch chord gestures vocabularies
Proceedings of the 2013 ACM international conference on Interactive tabletops and surfaces
ObjecTop: occlusion awareness of physical objects on interactive tabletops
Proceedings of the 2013 ACM international conference on Interactive tabletops and surfaces
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We examine the shape of hand and forearm occlusion on a multi-touch table for different touch contact types and tasks. Individuals have characteristic occlusion shapes, but with commonalities across tasks, postures, and handedness. Based on this, we create templates for designers to justify occlusion-related decisions and we propose geometric models capturing the shape of occlusion. A model using diffused illumination captures performed well when augmented with a forearm rectangle, as did a modified circle and rectangle model with ellipse "fingers" suitable when only X-Y contact positions are available. Finally, we describe the corpus of detailed multi-touch input data we generated which is available to the community.