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Fingertip-based interactive projector-camera system
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DOI：10.1016/j.sigpro.2014.08.043.png)
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Most current challenge of hand touch detection in interactive projector system is how to recover the 3D information of fingertips with a single camera. In this paper, a projector-camera system is proposed that enables users to interact with computer by touching on arbitrary surfaces with bare-hand. The realization of touch detection is through a novel vision-based algorithm performing in three steps: (1) foreground extraction based on predicted image generated from geometric and photometric calibration matrix; (2) fingertip detection by the curvature of hand contour points; (3) touch detection by active vision. Extensive experiments on foreground extraction, fingertip detection, and touch judgment are presented to show the robust performance of this system. (C) 2014 Elsevier B.V. All rights reserved.
Keyword:
Hand detection
Fingertip detection
Touch detection
Predicted image
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