Tensorial analysis of a Fourier-transform profilometric setup devoted to the evaluation of muscular contractions.
We explore the potential use of the Fourier-transform profilometry technique in in vivo studies of muscular contractions through the variation of muscle-group cross sections. Thanks to a tensorial analysis of the technique, a general expression of its sensitivity vector is established. It allows derivation of the expression of the resolution and the limit condition imposed by the spatial sampling of the fringe pattern. Key parameters that maximize the sensitivity are then simulated. A measurement system is accordingly built up and characterized. It is then successfully applied to the evaluation of the deformation of the forearm muscles during grasping exertions.
Hanafi
Abdelmalek
A
Laboratoire d'Optique P.M. Duffieux, Institute of Microtechniques of Franche-Comté, Université de Franche-Comté, Besançon, France. hanafia_j@yahoo.ca
Gharbi
Tijani
T
Cornu
Jean-Yves
JY
D000465:Algorithms; D019412:Anatomy, Cross-Sectional / Q000379:methods*; D001718:Birefringence; D005542:Forearm / Q000033:anatomy & histology / Q000502:physiology; D005583:Fourier Analysis; D018737:Hand Strength / Q000502:physiology; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D009119:Muscle Contraction / Q000502:physiology*; D018482:Muscle, Skeletal / Q000166:cytology* / Q000502:physiology*; D012031:Refractometry / Q000379:methods*