Abstract
We examine radar-based gesture input for interactive computer systems, a technology that has recently grown in terms of commercial availability, affordability, and popularity among researchers and practitioners, where radar sensors are leveraged to detect user input performed in mid-air, on the body, and around physical objects and digital devices. We analyze forty-five academic papers published on this topic between 2010 and 2021, and report results regarding gesture recognition techniques, application types, and evaluation approaches for radar-based gesture input. Our findings reveal that (1) deep learning techniques, such as Convolutional Neural Networks, have been the most popular approach for radar-based gesture recognition, (2) application opportunities for implementing radar gestures have been diverse, but without any clear contender for a game changer in this area, and (3) the gesture sets employed in prior work have been small with a median of just six gesture types. Based on these findings, we draw ten implications for integrating radar-based gesture sensing in ambient intelligence environments.
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The authors acknowledge funding received from Wallonie-Bruxelles International (WBI), Belgium under grant no. SUB/2021/519018 and UEFISCDI, Romania under grant no. PN-III-CEI-BIM-PBE-2020-0001 (1BM/2021).
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Şiean, AI., Pamparău, C., Sluÿters, A. et al. Flexible gesture input with radars: systematic literature review and taxonomy of radar sensing integration in ambient intelligence environments. J Ambient Intell Human Comput 14, 7967–7981 (2023). https://doi.org/10.1007/s12652-023-04606-9
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DOI: https://doi.org/10.1007/s12652-023-04606-9