Abstract
Virtual keyboard enables user typing on any surface, including a plain paper or your desk. Some virtual keyboards give vibration feedback; some are projected on the typing surface, while others give different kind of visual feedback such as showing it on a smart phone's screen. The user “presses” the virtual keys thus typing the desired input text. In this work we have implemented a single standard camera-based virtual keyboard, by improving shadow-based touch detection. The proposed solution is applicable to any surface. The system has been implemented on an Android phone, operates in real time, and gives excellent results.
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