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primary topic: Compensation of large motion sensor displacements during long recordings of limb movements

Compensation of large motion sensor displacements during long recordings of limb movements
type: AcademicArticle
type: Article
abstract: In motion capture applications using electromagnetic tracking systems the process of anatomical calibration as- sociates the technical frames of sensors attached to the skin with the human anatomy. Joint centers and axes are determined relative to these frames. A change of orientation of the sensor relative to the skin renders this calibration faulty. This sensitivity regarding sensor displacement can turn out to be a serious problem with movement recordings of several minutes duration. We propose the “dislocation distance” as a novel method to quantify sensor displacement and to detect gradual and sudden changes of sensor orientation. Furthermore a method to define a so called fixed technical frame is proposed as a robust reference frame which can adapt to a new sensor orientation on the skin. The proposed methods are applied to quantify the effects of sensor displacement of 120 upper and lower limb movement recordings of newborns revealing the need for a method to compensate for sensor displacement. The reliability of the fixed technical frame is quantified and it is shown that trend and dispersion of the dislocation distance can be signif- icantly reduced. A working example illustrates the consequences of sensor displacement on derived angle time series and how they are avoided using the fixed technical frame.
date: 2010
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository
has document: Compensation of large motion sensor displacements during long recordings of limb movements (PDF)
has document: Compensation of large motion sensor displacements during long recordings of limb movements (Other)
subject: 000 Allgemeines, Wissenschaft, Informatik

Compensation of large motion sensor displacements during long recordings of limb movements (PDF)
type: Document
has file: compensation_of_large_sensor_displacements.pdf
has part: compensation_of_large_sensor_displacements.pdf

ournal of Biomechanics
type: Collection

Joachim Pietz
type: Person
given name: Joachim
family name: Pietz

Keun-Sun Kim
type: Person
given name: Keun-Sun
family name: Kim

Heike Philippi
type: Person
given name: Heike
family name: Philippi

Dominik Karch
type: Person
given name: Dominik
family name: Karch

Hartmut Dickhaus
type: Person
given name: Hartmut
family name: Dickhaus

Katarzyna Wochner
type: Person
given name: Katarzyna
family name: Wochner

Compensation of large motion sensor displacements during long recordings of limb movements (Other)
type: Document
is version of: Compensation of large motion sensor displacements during long recordings of limb movements (PDF)
is volatile version of: Compensation of large motion sensor displacements during long recordings of limb movements (PDF)
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has part: indexcodes.txt

Compensation of large motion sensor displacements during long recordings of limb movements (Other)
type: Document
is version of: Compensation of large motion sensor displacements during long recordings of limb movements (PDF)
is volatile version of: Compensation of large motion sensor displacements during long recordings of limb movements (PDF)
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Compensation of large motion sensor displacements during long recordings of limb movements (Other)
type: Document
is version of: Compensation of large motion sensor displacements during long recordings of limb movements (PDF)
is volatile version of: Compensation of large motion sensor displacements during long recordings of limb movements (PDF)
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Compensation of large motion sensor displacements during long recordings of limb movements (Other)
type: Document
is version of: Compensation of large motion sensor displacements during long recordings of limb movements (PDF)
is volatile version of: Compensation of large motion sensor displacements during long recordings of limb movements (PDF)
ismedium thumbnail version of: Compensation of large motion sensor displacements during long recordings of limb movements (PDF)
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Compensation of large motion sensor displacements during long recordings of limb movements (Other)
type: Document
is version of: Compensation of large motion sensor displacements during long recordings of limb movements (PDF)
is volatile version of: Compensation of large motion sensor displacements during long recordings of limb movements (PDF)
issmall thumbnail version of: Compensation of large motion sensor displacements during long recordings of limb movements (PDF)
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HTML Summary of #13600 Compensation of large motion sensor displacements during long recordings of limb movements
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primary topic: Compensation of large motion sensor displacements during long recordings of limb movements

000 Allgemeines, Wissenschaft, Informatik
type: Concept
preferred label: 000 Generalities, Science @en