A Flexible New Technique for Camera Calibration
IEEE Transactions on Pattern Analysis and Machine Intelligence
Visuo-Haptic Systems: Half-Mirrors Considered Harmful
WHC '07 Proceedings of the Second Joint EuroHaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems
A Palm-Worn Haptic Display for Bimanual Operations in Virtual Environments
EuroHaptics '08 Proceedings of the 6th international conference on Haptics: Perception, Devices and Scenarios
Parallel Tracking and Mapping for Small AR Workspaces
ISMAR '07 Proceedings of the 2007 6th IEEE and ACM International Symposium on Mixed and Augmented Reality
Initializing Markerless Tracking Using a Simple Hand Gesture
ISMAR '07 Proceedings of the 2007 6th IEEE and ACM International Symposium on Mixed and Augmented Reality
Real-time hand-tracking with a color glove
ACM SIGGRAPH 2009 papers
Wearable haptic device to present contact sensation based on cutaneous sensation using thin wire
Proceedings of the International Conference on Advances in Computer Enterntainment Technology
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We propose a new haptic device for rendering contact sensation of virtual objects in camera-based Augmented Reality (AR) environments. Haptic feedback can help a user to intuitively sense virtual objects. For vision-impaired users, it also means a transfer from optical information observed in the cameras to haptic information. In our system, the contact between the virtual objects and the user's hand is detected with cameras. Therefore, when presenting the contact sensation, optical markers on the hand should not be occluded from the cameras so as to avoid disturbing the estimation of 3D position and posture of the hand. To fulfill such a requirement, we used BioMetal, a promising and versatile light and thin material that shrinks when electric current is applied, which provides the haptic feedback. Strings of BioMetal were stitched onto our proposed BioMetal glove. Because BioMetal does not shrink instantly when energized, a major challenge is how to deal with the time lag. We address this problem by setting buffering regions for pre-heating the BioMetal strings.