Journal
TSINGHUA SCIENCE AND TECHNOLOGY
Volume 26, Issue 5, Pages 692-705Publisher
TSINGHUA UNIV PRESS
DOI: 10.26599/TST.2021.9010017
Keywords
Inertial Measurement Units (IMUs); motion tracking; accelerometer; gyroscope; magnetometer; sensor fusion
Categories
Funding
- National Key R&D Program of China [2018YFB1004800]
- National Natural Science Foundation of China [61932013]
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Motion tracking using Inertial Measurement Units (IMUs) on mobile and wearable devices has gained significant interest recently. Despite the advancements over the past two decades, there are still key challenges in IMU-based motion tracking that require further exploration and solutions. Researchers have been continuously improving IMU technology, from calibration techniques to motion models, in order to address these challenges.
Motion tracking via Inertial Measurement Units (IMUs) on mobile and wearable devices has attracted significant interest in recent years. High-accuracy IMU-tracking can be applied in various applications, such as indoor navigation, gesture recognition, text input, etc. Many efforts have been devoted to improving IMU-based motion tracking in the last two decades, from early calibration techniques on ships or airplanes, to recent arm motion models used on wearable smart devices. In this paper, we present a comprehensive survey on IMU-tracking techniques on mobile and wearable devices. We also reveal the key challenges in IMU-based motion tracking on mobile and wearable devices and possible directions to address these challenges.
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