Assessment of a three-dimensional robotic model for biomechanical-data acquisition of human movement.
The use of a kinematic robotic model has not been implemented in the biomechanical-data acquisition protocol, as it has in workplace analysis, ergonomics and design. The purpose of this paper was to assess the use of a kinematic model to retrieve frames of human movements from data obtained at a low sampling frequency. From experimental trials with an original sampling frequency of 60 Hz, the data were sampled again at two lower frequencies, 5 Hz and 10 Hz. The model was then used to reconstitute the data to its original frequency (60 Hz). The results demonstrated that it was possible to retrieve a full 3-D human movement from a sampling rate lower than normal without sacrificing accuracy. It was observed from both reduced sampling frequencies that the error level was comparable to the usual accuracy of a DLT 3-D reconstruction technique. It was therefore concluded that the data retrieved from these two frequencies were very similar to the original data sampled at 60 Hz.
Desjardins
P
P
Laboratoire de biomécanique, Département de kinésiologie, Université de Montréal, Montréal, Québec, Canada. pierre.desjardins@umontreal.ca
Plamondon
A
A
Gagnon
M
M
D000203:Activities of Daily Living; D000328:Adult; D005583:Fourier Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional; D007596:Joints / Q000502:physiology*; D017770:Lifting; D008297:Male; D008954:Models, Biological; D009068:Movement / Q000502:physiology*; D012371:Robotics; D012815:Signal Processing, Computer-Assisted; D013057:Spectrum Analysis; D014743:Videotape Recording