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Random forest-based classsification and analysis of hemiplegia gait using low-cost depth cameras.
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- Author(s): Luo G;Luo G; Zhu Y; Zhu Y; Wang R; Wang R; Tong Y; Tong Y; Lu W; Lu W; Wang H; Wang H
- Source:
Medical & biological engineering & computing [Med Biol Eng Comput] 2020 Feb; Vol. 58 (2), pp. 373-382. Date of Electronic Publication: 2019 Dec 18.- Publication Type:
Journal Article- Language:
English - Source:
- Additional Information
- Source: Publisher: Springer Country of Publication: United States NLM ID: 7704869 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1741-0444 (Electronic) Linking ISSN: 01400118 NLM ISO Abbreviation: Med Biol Eng Comput Subsets: MEDLINE
- Publication Information: Publication: New York, NY : Springer
Original Publication: Stevenage, Eng., Peregrinus. - Subject Terms: Algorithms* ; Costs and Cost Analysis*; Gait Disorders, Neurologic/*diagnosis ; Gait Disorders, Neurologic/*diagnostic imaging ; Hemiplegia/*diagnostic imaging ; Hemiplegia/*physiopathology ; Photography/*economics ; Photography/*instrumentation; Female ; Hemiplegia/economics ; Humans ; Male ; Middle Aged ; ROC Curve
- Abstract: Hemiplegia is a form of paralysis that typically has the symptom of dysbasia. In current clinical rehabilitations, to measure the level of hemiplegia gaits, clinicians often conduct subject evaluations through observations, which is unreliable and inaccurate. The Microsoft Kinect sensor (MS Kinect) is a widely used, low-cost depth sensor that can be used to detect human behaviors in real time. The purpose of this study is to investigate the usage of the Kinect data for the classification and analysis of hemiplegia gait. We first acquire the gait data by using a MS Kinect and extract a set of gait features including the stride length, gait speed, left/right moving distances, and up/down moving distances. With the gait data of 60 subjects including 20 hemiplegia patients and 40 healthy subjects, we employ a random forest-based classification approach to analyze the importances of different gait features for hemiplegia classification. Thanks to the over-fitting avoidance nature of the random forest approach, we do not need to have a careful control over the percentage of patients in the training data. In our experiments, our approach obtained the averaged classification accuracy of 90.65% among all the combinations of the gait features, which substantially outperformed state-of-the-art methods. The best classification accuracy of our approach is 95.45%, which is superior than all existing methods. Additionally, our approach also correctly reveals the importance of different gait features for hemiplegia classification. Our random forest-based approach outperforms support vector machine-based method and the Bayesian-based method, and can effectively extract gait features of subjects with hemiplegia for the classification and analysis of hemiplegia. Graphical Abstract Random Forest based Classsification and Analysis of Hemiplegia Gait using Low-cost Depth Cameras. Left: Motion capture with MS Kinect; Top-right: Random Forest Classsification based on the extracted gait features; Bottom-right: Sensitivity and specificity evaluation of the proposed classification approach.
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Gait Posture. 2014 Apr;39(4):1062-8. (PMID: 24560691) - Contributed Indexing: Keywords: Depth cameras; Gait analysis; Hemiplegia; Microsoft Kinect; Motion classification; Random forest
- Publication Date: Date Created: 20191220 Date Completed: 20201103 Latest Revision: 20201103
- Publication Date: 20231215
- Accession Number: 10.1007/s11517-019-02079-7
- Accession Number: 31853775
- Source:
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