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Recognition of Human Hand Activities Based on a Single Wrist IMU Using Recurrent Neural Networks

Patricio Rivera 1, Edwin Valarezo 1, 2 Mun-Taek Choi 3, and Tae-Seong Kim 1
1. Dept. of Biomedical Engineering, Kyung Hee University, Republic of Korea
2. Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
3. School of Mechanical Engineering, Sungkyunkwan University, Republic of Korea
Abstract—Recognition of hand activities could provide new information towards daily human activity logging and gesture interface applications. However, there is a technical challenge due to delicate hand motions and complex movement contexts. In this work, we proposed hand activity recognition (HAR) based on a single inertial measurement unit (IMU) sensor at one wrist via deep learning recurrent neural network. The proposed HAR works directly with signals from a tri-axial accelerometer, gyroscope, and magnetometer sensors within one IMU. We evaluated the performance of our HAR with a public human hand activity database for six hand activities including Open Door, Close Door, Open Fridge, Close Fridge, Clean Table and Drink from Cup. Our results show an overall recognition accuracy of 80.09% with discrete standard epochs and 74.92% with noise-added epochs. With continuous time series epochs, the accuracy of 71.75% was obtained. 

Index Terms—hand activity recognition, IMU, wrist sensor, deep learning, RNN

Cite:Patricio Rivera, Edwin Valarezo, Mun-Taek Choi, and Tae-Seong Kim"Recognition of Human Hand Activities Based on a Single Wrist IMU Using Recurrent Neural Networks," International Journal of Pharma Medicine and Biological Sciences, Vol. 6, No. 4, pp. 114-118, October 2017. doi: 10.18178/ijpmbs.6.4.114-118
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