IEEE Computer Graphics and Applications
DiamondTouch: a multi-user touch technology
Proceedings of the 14th annual ACM symposium on User interface software and technology
Two-handed interaction on a tablet display
CHI '04 Extended Abstracts on Human Factors in Computing Systems
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
Beyond "social protocols": multi-user coordination policies for co-located groupware
CSCW '04 Proceedings of the 2004 ACM conference on Computer supported cooperative work
Low-cost multi-touch sensing through frustrated total internal reflection
Proceedings of the 18th annual ACM symposium on User interface software and technology
AVI '08 Proceedings of the working conference on Advanced visual interfaces
User-defined gestures for surface computing
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Real-time hand-tracking with a color glove
ACM SIGGRAPH 2009 papers
Detecting and leveraging finger orientation for interaction with direct-touch surfaces
Proceedings of the 22nd annual ACM symposium on User interface software and technology
reacTIVision and TUIO: a tangible tabletop toolkit
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
Investigating multi-touch and pen gestures for diagram editing on interactive surfaces
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
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Manual deskterity: an exploration of simultaneous pen + touch direct input
CHI '10 Extended Abstracts on Human Factors in Computing Systems
Hands-on math: a page-based multi-touch and pen desktop for technical work and problem solving
UIST '10 Proceedings of the 23nd annual ACM symposium on User interface software and technology
Combining multiple depth cameras and projectors for interactions on, above and between surfaces
UIST '10 Proceedings of the 23nd annual ACM symposium on User interface software and technology
Using a depth camera as a touch sensor
ACM International Conference on Interactive Tabletops and Surfaces
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Combining bimanual manipulation and pen-based input for 3D modelling
Proceedings of the Eighth Eurographics Symposium on Sketch-Based Interfaces and Modeling
Evaluating physical/virtual occlusion management techniques for horizontal displays
INTERACT'11 Proceedings of the 13th IFIP TC 13 international conference on Human-computer interaction - Volume Part III
OmniTouch: wearable multitouch interaction everywhere
Proceedings of the 24th annual ACM symposium on User interface software and technology
TapSense: enhancing finger interaction on touch surfaces
Proceedings of the 24th annual ACM symposium on User interface software and technology
Designing user-, hand-, and handpart-aware tabletop interactions with the TouchID toolkit
Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces
KinectTouch: accuracy test for a very low-cost 2.5D multitouch tracking system
Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces
Augmenting touch interaction through acoustic sensing
Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces
Hand occlusion on a multi-touch tabletop
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
See me, see you: a lightweight method for discriminating user touches on tabletop displays
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
A multi-touch notice board fostering social interaction
Proceedings of the Biannual Conference of the Italian Chapter of SIGCHI
An approach for designing and evaluating a plug-in vision-based tabletop touch identification system
Proceedings of the 25th Australian Computer-Human Interaction Conference: Augmentation, Application, Innovation, Collaboration
Left and right hand distinction for multi-touch tabletop interactions
Proceedings of the 19th international conference on Intelligent User Interfaces
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Multitouch surfaces are becoming prevalent, but most existing technologies are only capable of detecting the user's actual points of contact on the surface and not the identity, posture, and handedness of the user. In this paper, we define the concept of extended multitouch interaction as a richer input modality that includes all of this information. We further present a practical solution to achieve this on tabletop displays based on mounting a single commodity depth camera above a horizontal surface. This will enable us to not only detect when the surface is being touched, but also recover the user's exact finger and hand posture, as well as distinguish between different users and their handedness. We validate our approach using two user studies, and deploy the technique in a scratchpad tool and in a pen + touch sketch tool.