The Experts below are selected from a list of 2154 Experts worldwide ranked by ideXlab platform
Gert Pfurtscheller - One of the best experts on this subject based on the ideXlab platform.
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"Virtual Keyboard" Controlled by Spontaneous EEG Activity
IEEE Transactions on Neural Systems and Rehabilitation Engineering, 2003Co-Authors: B. Obermaier, G. R. Müller, Gert PfurtschellerAbstract:A "Virtual Keyboard" (VK) is a letter spelling device operated for example by spontaneous electroencephalogram (EEG), whereby the EEG is modulated by mental hand and leg motor imagery. We report on three able-bodied subjects, operating the VK. The ability in the use of the VK varies between 0.85 and 0.5 letters/min in error-free writing.
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Virtual Keyboard controlled by spontaneous eeg activity
International Conference on Artificial Neural Networks, 2001Co-Authors: B. Obermaier, G. R. Müller, Gert PfurtschellerAbstract:A 'Virtual Keyboard' (VK) is a letter spelling device operated by spontaneous EEG, whereby the EEG is modulated by mental hand and leg motor imagery. We report on a tetraplegic patient initially trained on an EEG-based orthosis control system operating the VK. He achieved an outstanding ability in the use of the VK and can operate it with 0.95 letters per minute.
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ICANN - 'Virtual Keyboard' Controlled by Spontaneous EEG Activity
Artificial Neural Networks — ICANN 2001, 2001Co-Authors: B. Obermaier, Gernot Müller, Gert PfurtschellerAbstract:A 'Virtual Keyboard' (VK) is a letter spelling device operated by spontaneous EEG, whereby the EEG is modulated by mental hand and leg motor imagery. We report on a tetraplegic patient initially trained on an EEG-based orthosis control system operating the VK. He achieved an outstanding ability in the use of the VK and can operate it with 0.95 letters per minute.
B. Obermaier - One of the best experts on this subject based on the ideXlab platform.
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"Virtual Keyboard" Controlled by Spontaneous EEG Activity
IEEE Transactions on Neural Systems and Rehabilitation Engineering, 2003Co-Authors: B. Obermaier, G. R. Müller, Gert PfurtschellerAbstract:A "Virtual Keyboard" (VK) is a letter spelling device operated for example by spontaneous electroencephalogram (EEG), whereby the EEG is modulated by mental hand and leg motor imagery. We report on three able-bodied subjects, operating the VK. The ability in the use of the VK varies between 0.85 and 0.5 letters/min in error-free writing.
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Virtual Keyboard controlled by spontaneous eeg activity
International Conference on Artificial Neural Networks, 2001Co-Authors: B. Obermaier, G. R. Müller, Gert PfurtschellerAbstract:A 'Virtual Keyboard' (VK) is a letter spelling device operated by spontaneous EEG, whereby the EEG is modulated by mental hand and leg motor imagery. We report on a tetraplegic patient initially trained on an EEG-based orthosis control system operating the VK. He achieved an outstanding ability in the use of the VK and can operate it with 0.95 letters per minute.
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ICANN - 'Virtual Keyboard' Controlled by Spontaneous EEG Activity
Artificial Neural Networks — ICANN 2001, 2001Co-Authors: B. Obermaier, Gernot Müller, Gert PfurtschellerAbstract:A 'Virtual Keyboard' (VK) is a letter spelling device operated by spontaneous EEG, whereby the EEG is modulated by mental hand and leg motor imagery. We report on a tetraplegic patient initially trained on an EEG-based orthosis control system operating the VK. He achieved an outstanding ability in the use of the VK and can operate it with 0.95 letters per minute.
Marco Gruteser - One of the best experts on this subject based on the ideXlab platform.
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MobiCom - VibKeyboard: Virtual Keyboard leveraging physical vibration: demo
Proceedings of the 22nd Annual International Conference on Mobile Computing and Networking, 2016Co-Authors: Yingying Chen, Marco GruteserAbstract:VibKeyboard could accurately determine the location of a keystroke on extended surface areas leveraging a single vibration sensor. Unlike capacitive sensing, it does not require conductive materials and compared to audio sensing it is more robust to acoustic noise. In VibKeyboard, the received vibration signals are determined by the location of the touch impact. This allows location discrimination of touches precise enough to enable emerging applications such as Virtual Keyboards on ubiquitous surfaces for mobile devices. VibKeyboard seeks to extract unique features in frequency domain embedded in the vibration signal attenuation and interference and perform fine grained localization. Our experimental results demonstrate that VibKeyboard could accurately recognize keystrokes from close-by keys on a nearby Virtual Keyboard.
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VibKeyboard: Virtual Keyboard leveraging physical vibration
Proceedings of the 22nd Annual International Conference on Mobile Computing and Networking - MobiCom '16, 2016Co-Authors: Jian Liu, Yingying Chen, Marco GruteserAbstract:VibKeyboard could accurately determine the location of a keystroke on extended surface areas leveraging a single vibration sensor. Unlike capacitive sensing, it does not require conductive materials and compared to audio sensing it is more robust to acoustic noise. In VibKeyboard, the received vibration signals are determined by the location of the touch impact. This allows location discrimination of touches precise enough to enable emerging applications such as Virtual Keyboards on ubiquitous surfaces for mobile devices. VibKeyboard seeks to extract unique features in frequency domain embedded in the vibration signal attenuation and interference and perform fine grained localization. Our experimental results demonstrate that VibKeyboard could accurately recognize keystrokes from close-by keys on a nearby Virtual Keyboard. © 2016 Copyright held by the owner/author(s).
Girijesh Prasad - One of the best experts on this subject based on the ideXlab platform.
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EMBC - A multiscript gaze-based assistive Virtual Keyboard
Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and, 2019Co-Authors: Hubert Cecotti, Yogesh Kumar Meena, Ashish Dutta, B. Bhushan, Girijesh PrasadAbstract:The recent development of inexpensive and accurate eye-trackers allows the creation of gazed based Virtual Keyboards that can be used by a large population of disabled people in developing countries. Thanks to eye-tracking technology, gaze-based Virtual Keyboards can be designed in relation to constraints related to the gaze detection accuracy and the considered display device. In this paper, we propose a new multimodal multiscript gaze-based Virtual Keyboard where it is possible to change the layout of the graphical user interface in relation to the script. Traditionally, Virtual Keyboards are assessed for a single language (e.g. English). We propose a multiscript gaze based Virtual Keyboard that can be accessed for people who communicate with the Latin, Bangla, and/or Devanagari scripts. We evaluate the performance of the Virtual Keyboard with two main groups of participants: 28 people who can communicate with both Bangla and English, and 24 people who can communicate with both Devanagari and English. The performance is assessed in relation to the information transfer rate when participants had to spell a sentence using their gaze for pointing to the command, and a dedicated mouth switch for commands selection. The results support the conclusion that the system is efficient, with no difference in terms of information transfer rate between Bangla and Devanagari. However, the performance is higher with English, despite the fact it was the secondary language of the participants.
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Toward Optimization of Gaze-Controlled Human-Computer Interaction: Application to Hindi Virtual Keyboard for Stroke Patients
IEEE Transactions on Neural Systems and Rehabilitation Engineering, 2018Co-Authors: Yogesh Kumar Meena, Hubert Cecotti, Kongfatt Wong-lin, Ashish Dutta, Girijesh PrasadAbstract:IEEE Virtual Keyboard applications and alternative communication devices provide new means of communication to assist disabled people. To date, Virtual Keyboard optimization schemes based on script-specific information along with multimodal input access facility are limited. In this work, we propose a novel method for optimizing the position of the displayed items for gaze-controlled tree-based menu selection systems by considering a combination of letter frequency and command selection time. The optimized graphical user interface (GUI) layout has been designed for a Hindi language Virtual Keyboard based on a menu wherein 10 commands provide access to type 88 different characters along with additional text editing commands. The system can be controlled in two different modes: eye-tracking alone and eye-tracking with an access soft-switch. Five different Keyboard layouts have been presented and evaluated with ten healthy participants. Further, the two best performing Keyboard layouts have been evaluated with eye-tracking alone on ten stroke patients. The overall performance analysis demonstrated significantly superior typing performance, high usability (87% SUS score), and low workload (NASA TLX with 17 scores) for the letter frequency and time-based organization with script specific arrangement design. This work represents the first optimized gaze-controlled Hindi Virtual Keyboard, which can be extended to other languages.
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Toward Optimization of Gaze-Controlled Human–Computer Interaction: Application to Hindi Virtual Keyboard for Stroke Patients
IEEE Transactions on Neural Systems and Rehabilitation Engineering, 2018Co-Authors: Yogesh Kumar Meena, Hubert Cecotti, Ashish Dutta, Kongfatt Wong-lin, Girijesh PrasadAbstract:Virtual Keyboard applications and alternative communication devices provide new means of communication to assist disabled people. To date, Virtual Keyboard optimization schemes based on script-specific information, along with multimodal input access facility, are limited. In this paper, we propose a novel method for optimizing the position of the displayed items for gaze-controlled tree-based menu selection systems by considering a combination of letter frequency and command selection time. The optimized graphical user interface layout has been designed for a Hindi language Virtual Keyboard based on a menu wherein 10 commands provide access to type 88 different characters, along with additional text editing commands. The system can be controlled in two different modes: eye-tracking alone and eye-tracking with an access soft-switch. Five different Keyboard layouts have been presented and evaluated with ten healthy participants. Furthermore, the two best performing Keyboard layouts have been evaluated with eye-tracking alone on ten stroke patients. The overall performance analysis demonstrated significantly superior typing performance, high usability (87% SUS score), and low workload (NASA TLX with 17 scores) for the letter frequency and time-based organization with script specific arrangement design. This paper represents the first optimized gaze-controlled Hindi Virtual Keyboard, which can be extended to other languages.
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Designing a Virtual Keyboard with multi-modal access for people with disabilities
Proceedings of the 2011 World Congress on Information and Communication Technologies WICT 2011, 2011Co-Authors: Vijit Prabhu, Girijesh PrasadAbstract:Virtual Keyboards or on-screen Keyboards are commonly used as a means of augmentative communication by people with severe speech and motion disability. Any such Virtual Keyboard is characterized by keys' layout design and method of access. In this paper we present a Virtual Keyboard that can support multiple modes of access and has an optimum layout based on the frequency of occurrence of alphabet in English text. We have compared our proposed layout against commonly used alphabetical layout, which demonstrates a superior performance of our design.
G. R. Müller - One of the best experts on this subject based on the ideXlab platform.
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"Virtual Keyboard" Controlled by Spontaneous EEG Activity
IEEE Transactions on Neural Systems and Rehabilitation Engineering, 2003Co-Authors: B. Obermaier, G. R. Müller, Gert PfurtschellerAbstract:A "Virtual Keyboard" (VK) is a letter spelling device operated for example by spontaneous electroencephalogram (EEG), whereby the EEG is modulated by mental hand and leg motor imagery. We report on three able-bodied subjects, operating the VK. The ability in the use of the VK varies between 0.85 and 0.5 letters/min in error-free writing.
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Virtual Keyboard controlled by spontaneous eeg activity
International Conference on Artificial Neural Networks, 2001Co-Authors: B. Obermaier, G. R. Müller, Gert PfurtschellerAbstract:A 'Virtual Keyboard' (VK) is a letter spelling device operated by spontaneous EEG, whereby the EEG is modulated by mental hand and leg motor imagery. We report on a tetraplegic patient initially trained on an EEG-based orthosis control system operating the VK. He achieved an outstanding ability in the use of the VK and can operate it with 0.95 letters per minute.
