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Texture Classification and Visualization of Time Series of Gait Dynamics in Patients with Neuro-Degenerative Diseases
Linköpings universitet, Institutionen för medicinsk teknik. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0002-4255-5130
2018 (Engelska)Ingår i: IEEE transactions on neural systems and rehabilitation engineering, ISSN 1534-4320, E-ISSN 1558-0210, Vol. 26, nr 1, s. 188-196Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The analysis of gait dynamics is helpful for predicting and improving the quality of life, morbidity, and mortality in neuro-degenerative patients. Feature extraction of physiological time series and classification between gait patterns of healthy control subjects and patients are usually carried out on the basis of 1-D signal analysis. The proposed approach presented in this paper departs itself from conventional methods for gait analysis by transforming time series into images, of which texture features can be extracted from methods of texture analysis. Here, the fuzzy recurrence plot algorithm is applied to transform gait time series into texture images, which can be visualized to gain insight into disease patterns. Several texture features are then extracted from fuzzy recurrence plots using the gray-level co-occurrence matrix for pattern analysis and machine classification to differentiate healthy control subjects from patients with Parkinson's disease, Huntington's disease, and amyotrophic lateral sclerosis. Experimental results using only the right stride-intervals of the four groups show the effectiveness of the application of the proposed approach.

Ort, förlag, år, upplaga, sidor
Institute of Electrical and Electronics Engineers (IEEE), 2018. Vol. 26, nr 1, s. 188-196
Nationell ämneskategori
Annan medicinteknik
Identifikatorer
URN: urn:nbn:se:liu:diva-139461DOI: 10.1109/TNSRE.2017.2732448ISI: 000422939000021PubMedID: 28767372Scopus ID: 2-s2.0-85029178123OAI: oai:DiVA.org:liu-139461DiVA, id: diva2:1128339
Tillgänglig från: 2017-07-25 Skapad: 2017-07-25 Senast uppdaterad: 2018-09-28Bibliografiskt granskad

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Pham, Tuan
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IEEE transactions on neural systems and rehabilitation engineering
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