NDLI: Detrending knee joint vibration signals with a cascade moving average filter

Content Provider	IEEE Xplore Digital Library
Author	Suxian Cai Yunfeng Wu Ning Xiang Zhangting Zhong Jia He Lei Shi Fang Xu
Copyright Year	2012
Description	Author affiliation: Dept. of Orthopedics, Zhongshan Hosp. Xiamen Univ., Xiamen, China (Lei Shi) \|\| Dept. of Commun. Eng., Xiamen Univ., Xiamen, China (Suxian Cai; Yunfeng Wu; Ning Xiang; Zhangting Zhong; Jia He; Fang Xu)
Abstract	Knee joint vibration signals are very useful for computer-aided analysis of the pathological conditions in the knee. In a vibration arthrometry test, the legs of patients with knee joint disorders may tremble due to the reaction of pain, which causes the baseline wander that may affect the diagnostic decision making in medical study. This paper presents a new type of cascade moving average filter with hierarchical layers to remove the baseline wander in the raw knee joint vibration signals. The first layer of the cascade filter contains two moving averaging operators with the same order. The five tail inputs of the first moving averaging operator are overlapping with the beginning inputs of the successive operator. The piecewise linear trends estimated by the moving average operators in the first layer were smoothed in the final cascade filter output. The simulation results showed that the cascade filter can effectively remove the baseline wander in the raw knee joint vibration signals.
Sponsorship	IEEE Eng. Medicine Biol. Soc.
Starting Page	4357
Ending Page	4360
File Size	531678
Page Count	4
File Format	PDF
ISBN	9781424441198
ISSN	1557170X
e-ISBN	9781457717871
DOI	10.1109/EMBC.2012.6346931
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-08-28
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Joints Knee Vibrations Educational institutions Osteoarthritis Bones X-ray imaging
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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