Octree generation from object silhouettes in perspective views
Computer Vision, Graphics, and Image Processing
Two-handed gesture in multi-modal natural dialog
UIST '92 Proceedings of the 5th annual ACM symposium on User interface software and technology
Whole-hand input
Interacting with paper on the DigitalDesk
Communications of the ACM - Special issue on computer augmented environments: back to the real world
Reaching for objects in VR displays: lag and frame rate
ACM Transactions on Computer-Human Interaction (TOCHI)
Bricks: laying the foundations for graspable user interfaces
CHI '95 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
How many 2D silhouettes does it take to reconstruct a 3D object?
Computer Vision and Image Understanding
Tangible bits: towards seamless interfaces between people, bits and atoms
Proceedings of the ACM SIGCHI Conference on Human factors in computing systems
Pfinder: Real-Time Tracking of the Human Body
IEEE Transactions on Pattern Analysis and Machine Intelligence
The metaDESK: models and prototypes for tangible user interfaces
Proceedings of the 10th annual ACM symposium on User interface software and technology
Illuminating light: an optical design tool with a luminous-tangible interface
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Automatic Model Construction and Pose Estimation From Photographs Using Triangular Splines
IEEE Transactions on Pattern Analysis and Machine Intelligence
Real-Time American Sign Language Recognition Using Desk and Wearable Computer Based Video
IEEE Transactions on Pattern Analysis and Machine Intelligence
MIND-WARPING: towards creating a compelling collaborative augmented reality game
Proceedings of the 5th international conference on Intelligent user interfaces
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Toward Spontaneous Interaction with the Perceptive Workbench
IEEE Computer Graphics and Applications
Nonparametric Segmentation of Curves into Various Representations
IEEE Transactions on Pattern Analysis and Machine Intelligence
Multimodal interaction techniques for the virtual workbench
CHI '99 Extended Abstracts on Human Factors in Computing Systems
Visual Tracking of High DOF Articulated Structures: an Application to Human Hand Tracking
ECCV '94 Proceedings of the Third European Conference-Volume II on Computer Vision - Volume II
On 3-D Surface Reconstruction Using Shape from Shadows
CVPR '98 Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition
Fast Tracking of Hands and Fingertips in Infrared Images for Augmented Desk Interface
FG '00 Proceedings of the Fourth IEEE International Conference on Automatic Face and Gesture Recognition 2000
Robust Finger Tracking with Multiple Cameras
RATFG-RTS '99 Proceedings of the International Workshop on Recognition, Analysis, and Tracking of Faces and Gestures in Real-Time Systems
Third-Person Navigation of Whole-Planet Terrain in a Head-tracked Stereoscopic Environment
VR '99 Proceedings of the IEEE Virtual Reality
ASL Recognition Based on a Coupling Between HMMs and 3D Motion Analysis
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
The KidsRoom: A Perceptually-Based Interactive and Immersive Story Environment
Presence: Teleoperators and Virtual Environments
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The Perceptive Workbench endeavors to create a spontaneous and unimpeded interface between the physical and virtual worlds. Its vision-based methods for interaction constitute an alternative to wired input devices and tethered tracking. Objects are recognized and tracked when placed on the display surface. By using multiple infrared light sources, the object's 3D shape can be captured and inserted into the virtual interface. This ability permits spontaneity since either preloaded objects or those objects selected at run-time by the user can become physical icons. Integrated into the same vision-based interface is the ability to identify 3D hand position, pointing direction, and sweeping arm gestures. Such gestures can enhance selection, manipulation, and navigation tasks. In previous publications, the Perceptive Workbench has demonstrated its utility for a variety of applications, including augmented reality gaming and terrain navigation. This paper will focus on the implementation and performance aspects and will introduce recent enhancements to the system.