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New Image-Based System for Vibration Measurement, Specially Developed for Forced Human Vibration Analysis

Authors :
Azadeh Yadollahi
Arash Abadpour
Roya Narimani
Maryam Hoviattalab
Source :
Scopus-Elsevier
Publication Year :
2004
Publisher :
ASMEDC, 2004.

Abstract

The human being in the environments of modern technology has to endure stresses of many and varied kinds of vibrations [1]. Measuring vibration is an important tool in rehabilitation and biomechanical fields of research. We have proposed image processing as a new method to record and determine the frequency response of human body. The subjects were exposed to whole body periodical vibration while standing on a shaking table. Two digital camcorders were used to capture the motion of colored pencil-dot markers on the skin of human body (forehead) and on the edge of the shaking table. After color spotting each frame, the binary image results were processed using new circle factor criteria proposed in this work, for fast finding circles based on second order statistics. The extracted points were calibrated using our own extended version of the direct linear transformation (DLT) method. We subsequently used Borland Delphi 5.0 language to develop useful software for measuring and analyzing human body vibration. As a result, it was clear that the proposed method was lower noise-sensitive in comparison to accelerometer. In order to investigate the validity of the software, the obtained mechanical impedance of the body were compared with other investigations in literature and showed to be compatible. The main advantage of this method is working with a simple user-familiar hardware with no external device attached to the subject and also a user-friendly-software.Copyright © 2004 by ASME

Details

Database :
OpenAIRE
Journal :
Advances in Bioengineering
Accession number :
edsair.doi.dedup.....23605945018055e4d5c06b16f5dcedf3
Full Text :
https://doi.org/10.1115/imece2004-59315