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Motion cue analysis for parkinsonian gait recognition
Högskolan Dalarna, Akademin Industri och samhälle, Datateknik.ORCID-id: 0000-0002-2752-3712
Högskolan Dalarna, Akademin Industri och samhälle, Datateknik.ORCID-id: 0000-0003-0403-338X
Högskolan Dalarna, Akademin Industri och samhälle, Datateknik.
2013 (engelsk)Inngår i: The open biomedical engineering journal, ISSN 1874-1207, Vol. 7, s. 1-8Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This paper presents a computer-vision based marker-free method for gait-impairment detection in Patients with Parkinson's disease (PWP). The system is based upon the idea that a normal human body attains equilibrium during the gait by aligning the body posture with Axis-of-Gravity (AOG) using feet as the base of support. In contrast, PWP appear to be falling forward as they are less-able to align their body with AOG due to rigid muscular tone. A normal gait exhibits periodic stride-cycles with stride-angle around 45o between the legs, whereas PWP walk with shortened stride-angle with high variability between the stride-cycles. In order to analyze Parkinsonian-gait (PG), subjects were videotaped with several gait-cycles. The subject's body was segmented using a color-segmentation method to form a silhouette. The silhouette was skeletonized for motion cues extraction. The motion cues analyzed were stride-cycles (based on the cyclic leg motion of skeleton) and posture lean (based on the angle between leaned torso of skeleton and AOG). Cosine similarity between an imaginary perfect gait pattern and the subject gait patterns produced 100% recognition rate of PG for 4 normal-controls and 3 PWP. Results suggested that the method is a promising tool to be used for PG assessment in home-environment.

sted, utgiver, år, opplag, sider
2013. Vol. 7, s. 1-8
HSV kategori
Forskningsprogram
Komplexa system - mikrodataanalys, E-MOTIONS, Beslutsstöd för Parkinsonbehandling
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URN: urn:nbn:se:du-11881DOI: 10.2174/1874120701307010001PubMedID: 23407764OAI: oai:DiVA.org:du-11881DiVA, id: diva2:607421
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Tilgjengelig fra: 2013-02-22 Laget: 2013-02-22 Sist oppdatert: 2018-01-11bibliografisk kontrollert

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