Abstract
The propose of this study was to assess the feasibility of using support vector machines in analysing myoelectric signals acquired using an off the shelf device, the Myo armband from Thalmic Lab, when performing hand grasp gestures. Participants (n = 26) took part in the study wearing the armband and producing a series of required gestures. Support vector machines were used to train a model using participant training values, and to classify gestures produced by the same participants. Different Kernel functions and electrode combinations were studied. Also we contrasted different lengths of training values versus different lengths for the classification samples. The overall accuracy was 94.9% with data from 8 electrodes, and 72% where only four of the electrodes were used. The linear kernel outperformed the polynomial, and radial basis function. Exploring the number of training samples versus the achieved classification accuracy, results identified acceptable accuracies (> 90%) for training around 2.5s, and recognising grasp with 0.2s of acquired data. The best recognised grasp was the hand closed (97.6%), followed by cylindrical grasp (96.8%), the lateral grasp (93.2%) and tripod (92%). These results allows us to progress to the next stage of work where the Myo armband is used in the context of robot-mediated stroke rehabilitation and also involves more dynamic interactions as well as gross upper arm movements.
Original language | English |
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Title of host publication | 2017 International Conference on Rehabilitation Robotics (ICORR) |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 111-115 |
Number of pages | 5 |
ISBN (Print) | 978-1-5386-2297-1 |
DOIs | |
Publication status | Published - 20 Jul 2017 |
Event | 2017 International Conference on Rehabilitation Robotics (ICORR) - QEII Center, London, United Kingdom Duration: 17 Jul 2017 → 20 Jul 2017 https://www.ieee-ras.org/component/rseventspro/event/1056-icorr-2017-15th-ieee-international-conference-on-rehabilitation-robotics |
Conference
Conference | 2017 International Conference on Rehabilitation Robotics (ICORR) |
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Country/Territory | United Kingdom |
City | London |
Period | 17/07/17 → 20/07/17 |
Internet address |
Keywords
- Training
- Kernel
- Support vector machines
- Electrodes
- Wrist
- Electromyography
- Performance evaluation