Tangible bits: towards seamless interfaces between people, bits and atoms
Proceedings of the ACM SIGCHI Conference on Human factors in computing systems
Issues and techniques in touch-sensitive tablet input
SIGGRAPH '85 Proceedings of the 12th annual conference on Computer graphics and interactive techniques
DiamondTouch: a multi-user touch technology
Proceedings of the 14th annual ACM symposium on User interface software and technology
SmartSkin: an infrastructure for freehand manipulation on interactive surfaces
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Multiple View Geometry in Computer Vision
Multiple View Geometry in Computer Vision
TouchLight: an imaging touch screen and display for gesture-based interaction
Proceedings of the 6th international conference on Multimodal interfaces
Visual touchpad: a two-handed gestural input device
Proceedings of the 6th international conference on Multimodal interfaces
PlayAnywhere: a compact interactive tabletop projection-vision system
Proceedings of the 18th annual ACM symposium on User interface software and technology
Low-cost multi-touch sensing through frustrated total internal reflection
Proceedings of the 18th annual ACM symposium on User interface software and technology
Precise selection techniques for multi-touch screens
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Fluid DTMouse: better mouse support for touch-based interactions
Proceedings of the working conference on Advanced visual interfaces
A multitouch software architecture
Proceedings of the 5th Nordic conference on Human-computer interaction: building bridges
A short guide to modulated light
Proceedings of the 3rd International Conference on Tangible and Embedded Interaction
The design and evaluation of multi-finger mouse emulation techniques
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Supporting casual interactions between board games on public tabletop displays and mobile devices
Personal and Ubiquitous Computing
StitchRV: multi-camera fiducial tracking
Proceedings of the fourth international conference on Tangible, embedded, and embodied interaction
Hand distinction for multi-touch tabletop interaction
Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
BioTISCH: the interactive molecular biology lab bench
CHI '10 Extended Abstracts on Human Factors in Computing Systems
A pinch up gesture on multi-touch table with hover detection
ACM SIGGRAPH ASIA 2010 Posters
SurfaceMouse: supplementing multi-touch interaction with a virtual mouse
Proceedings of the fifth international conference on Tangible, embedded, and embodied interaction
ShadowPuppets: supporting collocated interaction with mobile projector phones using hand shadows
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Integrating touch and near touch interactions for information visualizations
CHI '11 Extended Abstracts on Human Factors in Computing Systems
Improving FTIR based multi-touch sensors with IR shadow tracking
Proceedings of the 3rd ACM SIGCHI symposium on Engineering interactive computing systems
INTERACT'11 Proceedings of the 13th IFIP TC 13 international conference on Human-computer interaction - Volume Part III
Extending interactions into hoverspace using reflected light
Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces
Interactive exploration of geospatial network visualization
CHI '12 Extended Abstracts on Human Factors in Computing Systems
A study on touch & hover based interaction for zooming
CHI '12 Extended Abstracts on Human Factors in Computing Systems
Comparing elicited gestures to designer-created gestures for selection above a multitouch surface
Proceedings of the 2012 ACM international conference on Interactive tabletops and surfaces
Finger and hand detection for multi-touch interfaces based on maximally stable extremal regions
Proceedings of the 2012 ACM international conference on Interactive tabletops and surfaces
Touch tracking with a particle filter
Machine Vision and Applications
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Multi-touch interfaces have been a focus of research in recent years, resulting in development of various innovative UI concepts. Support for existing WIMP interfaces, however, should not be overlooked. Although several approaches exist, there is still room for improvement, particularly regarding implementation of the "hover" state, commonly used in mouse-based interfaces. In this paper, we present a multi-touch system which is designed to address this problem. A multi-touch table based on FTIR (frustrated total internal reflection) is extended with a ceiling-mounted light source to create shadows of hands and arms. By tracking these shadows with the rear-mounted camera which is already present in the FTIR setup, users can control multiple cursors without touching the table and trigger a "click" event by tapping the surface with any finger of the corresponding hand. An informal evaluation with 15 subjects found an improvement in accuracy when compared to an unaugmented touch screen.