Abstract
The paper describes the idea of touchless virtual keyboard designed for disabled people with tetraparesis. Each key can be selected by three double eye blinks registered by EMG sensor. EEG signals are used as a support that allows the user to change the input mode of single characters to the mode of predicted words selection. The keyboard was implemented and evaluated during provided experiments. Obtained result (\(WPM=1.11\)) partially confirms the calculated typing speed (\(WPM=1.23\)). It is also found that the keyboard efficiency can be improved by using a list of predicted words, even the number of those words is low and they are short (\(WPM=1.27\)). Provided discuss presents that improved keyboard used by experienced users could achieve the typing efficiency even up to \(WPM=3.15\).
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Publication financed by the Institute of Informatics at Silesian University of Technology, statutory research no. 02/020/BK-16/0077.
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Dobosz, K., Stawski, K. (2018). Touchless Virtual Keyboard Controlled by Eye Blinking and EEG Signals. In: Gruca, A., Czachórski, T., Harezlak, K., Kozielski, S., Piotrowska, A. (eds) Man-Machine Interactions 5. ICMMI 2017. Advances in Intelligent Systems and Computing, vol 659. Springer, Cham. https://doi.org/10.1007/978-3-319-67792-7_6
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