Vision-based projected tabletop interface for finger interactions

Authors:
Peng Song;Stefan Winkler;Syed Omer Gilani;ZhiYing Zhou
Affiliations:
Interactive Multimedia Lab, Department of Electrical and Computer Engineering, National University of Singapore, Singapore;Interactive Multimedia Lab, Department of Electrical and Computer Engineering, National University of Singapore, Singapore;Interactive Multimedia Lab, Department of Electrical and Computer Engineering, National University of Singapore, Singapore;Interactive Multimedia Lab, Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Venue:
HCI'07 Proceedings of the 2007 IEEE international conference on Human-computer interaction
Year:
2007

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Abstract

We designed and implemented a vision-based projected table-top interface for finger interaction. The system offers a simple and quick setup and economic design. The projection onto the tabletop provides more comfortable and direct viewing for users, and more natural, intuitive yet flexible interaction than classical or tangible interfaces. Homography calibration techniques are used to provide geometrically compensated projections on the tabletop. A robust finger tracking algorithm is proposed to enable accurate and efficient interactions using this interface. Two applications have been implemented based on this interface.