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Performing Realistic Workout Activity Recognition on Consumer Smartphones

Fu, Biying and Kirchbuchner, Florian and Kuijper, Arjan (2020):
Performing Realistic Workout Activity Recognition on Consumer Smartphones.
In: Technologies, 8 (4), p. 17. MDPI, ISSN 2227-7080,
DOI: 10.3390/technologies8040065,
[Article]

Abstract

Smartphones have become an essential part of our lives. Especially its computing power and its current specifications make a modern smartphone a powerful device for human activity recognition tasks. Equipped with various integrated sensors, a modern smartphone can be leveraged for lots of smart applications. We already investigated the possibility of using an unmodified commercial smartphone to recognize eight strength-based exercises. App-based workouts have become popular in the last few years. The advantage of using a mobile device is that you can practice anywhere at anytime. In our previous work, we proved the possibility of turning a commercial smartphone into an active sonar device to leverage the echo reflected from exercising movement close to the device. By conducting a test study with 14 participants, we showed the first results for cross person evaluation and the generalization ability of our inference models on disjoint participants. In this work, we extended another model to further improve the model generalizability and provided a thorough comparison of our proposed system to other existing state-of-the-art approaches. Finally, a concept of counting the repetitions is also provided in this study as a parallel task to classification.

Item Type: Article
Erschienen: 2020
Creators: Fu, Biying and Kirchbuchner, Florian and Kuijper, Arjan
Title: Performing Realistic Workout Activity Recognition on Consumer Smartphones
Language: English
Abstract:

Smartphones have become an essential part of our lives. Especially its computing power and its current specifications make a modern smartphone a powerful device for human activity recognition tasks. Equipped with various integrated sensors, a modern smartphone can be leveraged for lots of smart applications. We already investigated the possibility of using an unmodified commercial smartphone to recognize eight strength-based exercises. App-based workouts have become popular in the last few years. The advantage of using a mobile device is that you can practice anywhere at anytime. In our previous work, we proved the possibility of turning a commercial smartphone into an active sonar device to leverage the echo reflected from exercising movement close to the device. By conducting a test study with 14 participants, we showed the first results for cross person evaluation and the generalization ability of our inference models on disjoint participants. In this work, we extended another model to further improve the model generalizability and provided a thorough comparison of our proposed system to other existing state-of-the-art approaches. Finally, a concept of counting the repetitions is also provided in this study as a parallel task to classification.

Journal or Publication Title: Technologies
Journal volume: 8
Number: 4
Publisher: MDPI
Uncontrolled Keywords: Ultrasonic sensing, Mobile sensors, Human activity recognition, Proximity sensing
Divisions: 20 Department of Computer Science
20 Department of Computer Science > Mathematical and Applied Visual Computing
Date Deposited: 02 Dec 2020 12:17
DOI: 10.3390/technologies8040065
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