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Using FSR based muscule activity monitoring to recognize manipulative arm gestures

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3 Author(s)
Ogris, G. ; Univ. of Passau, Passau ; Kreil, M. ; Lukowicz, P.

We present an experiment that investigates the usefulness of muscle monitoring information from arm mounted force sensitive resistors (FSR) for activity recognition. The paper is motivated by previous work that has demonstrated the feasibility of using FSRs for muscle activity monitoring (on leg muscles) and presented some initial signals related to distinct arm activities. We systematically investigate the performance of an FSR system on 16 different manipulative gestures and 2 subjects. The aim is to test the limits of the system, compare them to established sensing modalities (3D acceleration and gyro), and establish the value of combining FSR with other sensing modalities. We also present a hardware setup that addresses key problems that were identified in previous work: large variations in the attachment force and sensor placement accuracy issues. For all classifiers the overall accuracy of the FSR system is in the middle between the accelerometer (between 5% and 10% better) and the gyro (between 2% and 11% worse). Adding FSRs to another sensor improves the accuracy by 1% to 29%.

Published in:

Wearable Computers, 2007 11th IEEE International Symposium on

Date of Conference:

11-13 Oct. 2007