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        Application of support vector machines in detecting hand grasp gestures using a commercially off the shelf wireless myoelectric armband

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        Author
        Amirabdollahian, Farshid
        Walters, Michael L.
        Attention
        2299/25353
        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.
        Publication date
        2017-07-20
        Published in
        2017 International Conference on Rehabilitation Robotics (ICORR)
        Published version
        https://doi.org/10.1109/ICORR.2017.8009231
        License
        Unspecified
        Other links
        http://hdl.handle.net/2299/25353
        Relations
        School of Physics, Engineering & Computer Science
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