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arXiv · 2108.02148

Pervasive Hand Gesture Recognition for Smartphones using Non-audible Sound and Deep Learning

Ahmed Ibrahim·Ayman El-Refai·Sara Ahmed·Mariam Aboul-Ela·Hesham M. Eraqi·Mohamed Moustafa
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Abstract

Due to the mass advancement in ubiquitous technologies nowadays, new pervasive methods have come into the practice to provide new innovative features and stimulate the research on new human-computer interactions. This paper presents a hand gesture recognition method that utilizes the smartphone's built-in speakers and microphones. The proposed system emits an ultrasonic sonar-based signal (inaudible sound) from the smartphone's stereo speakers, which is then received by the smartphone's microphone and processed via a Convolutional Neural Network (CNN) for Hand Gesture Recognition. Data augmentation techniques are proposed to improve the detection accuracy and three dual-channel input fusion methods are compared. The first method merges the dual-channel audio as a single input spectrogram image. The second method adopts early fusion by concatenating the dual-channel spectrograms. The third method adopts late fusion by having two convectional input branches processing each of the dual-channel spectrograms and then the outputs are merged by the last layers. Our experimental results demonstrate a promising detection accuracy for the six gestures presented in our publicly available dataset with an accuracy of 93.58\% as a baseline.

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BibTeXRIS

Ahmed Ibrahim, Ayman El-Refai, Sara Ahmed, Mariam Aboul-Ela, Hesham M. Eraqi, Mohamed Moustafa. 2021-08-04. Pervasive Hand Gesture Recognition for Smartphones using Non-audible Sound and Deep Learning. https://arxiv.org/abs/2108.02148

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