International Journal of Computer Vision
Gesture VR: vision-based 3D hand interace for spatial interaction
MULTIMEDIA '98 Proceedings of the sixth ACM international conference on Multimedia
DiamondTouch: a multi-user touch technology
Proceedings of the 14th annual ACM symposium on User interface software and technology
ACM Transactions on Computer-Human Interaction (TOCHI)
Computer Vision for Interactive Computer Graphics
IEEE Computer Graphics and Applications
Multiresolution Gray-Scale and Rotation Invariant Texture Classification with Local Binary Patterns
IEEE Transactions on Pattern Analysis and Machine Intelligence
The smart floor: a mechanism for natural user identification and tracking
CHI '00 Extended Abstracts on Human Factors in Computing Systems
Object Recognition from Local Scale-Invariant Features
ICCV '99 Proceedings of the International Conference on Computer Vision-Volume 2 - Volume 2
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
Territoriality in collaborative tabletop workspaces
CSCW '04 Proceedings of the 2004 ACM conference on Computer supported cooperative work
Skin Segmentation Using Color Pixel Classification: Analysis and Comparison
IEEE Transactions on Pattern Analysis and Machine Intelligence
Hand Geometry: A New Approach for Feature Extraction
AUTOID '05 Proceedings of the Fourth IEEE Workshop on Automatic Identification Advanced Technologies
Cooperative gestures: multi-user gestural interactions for co-located groupware
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Identity-Differentiating Widgets for Multiuser Interactive Surfaces
IEEE Computer Graphics and Applications
SIDES: a cooperative tabletop computer game for social skills development
CSCW '06 Proceedings of the 2006 20th anniversary conference on Computer supported cooperative work
A survey of collaborative web search practices
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Speeded-Up Robust Features (SURF)
Computer Vision and Image Understanding
Detecting and leveraging finger orientation for interaction with direct-touch surfaces
Proceedings of the 22nd annual ACM symposium on User interface software and technology
Robust hand detection for augmented reality interface
Proceedings of the 8th International Conference on Virtual Reality Continuum and its Applications in Industry
UIST '10 Proceedings of the 23nd annual ACM symposium on User interface software and technology
The IR ring: authenticating users' touches on a multi-touch display
UIST '10 Proceedings of the 23nd annual ACM symposium on User interface software and technology
HandsDown: hand-contour-based user identification for interactive surfaces
Proceedings of the 6th Nordic Conference on Human-Computer Interaction: Extending Boundaries
IdLenses: dynamic personal areas on shared surfaces
ACM International Conference on Interactive Tabletops and Surfaces
IdWristbands: IR-based user identification on multi-touch surfaces
ACM International Conference on Interactive Tabletops and Surfaces
Medusa: a proximity-aware multi-touch tabletop
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
Bootstrapper: recognizing tabletop users by their shoes
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Permulin: collaboration on interactive surfaces with personal in- and output
CHI '13 Extended Abstracts on Human Factors in Computing Systems
Permulin: personal in- and output on interactive surfaces
CHI '13 Extended Abstracts on Human Factors in Computing Systems
Surround-see: enabling peripheral vision on smartphones during active use
Proceedings of the 26th annual ACM symposium on User interface software and technology
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Interactive surfaces have great potential for co-located collaboration because of their ability to track multiple inputs simultaneously. However, the multi-user experience on these devices could be enriched significantly if touch points could be associated with a particular user. Existing approaches to user identification are intrusive, require users to stay in a fixed position, or suffer from poor accuracy. We present a non-intrusive, high-accuracy technique for mapping touches to their corresponding user in a collaborative environment. By mounting a high-resolution camera above the interactive surface, we are able to identify touches reliably without any extra instrumentation, and users are able to move around the surface at will. Our technique, which leverages the back of users' hands as identifiers, supports walk-up-and-use situations in which multiple people interact on a shared surface.