A MARKER-FREE METHOD TO ESTIMATE JOINT CENTER OF ROTATION BY VIDEO IMAGE-PROCESSING

Authors
PERSSON T LANSHAMMAR H MEDVED V
Citation
T. Persson et al., A MARKER-FREE METHOD TO ESTIMATE JOINT CENTER OF ROTATION BY VIDEO IMAGE-PROCESSING, Computer methods and programs in biomedicine, 46(3), 1995, pp. 217-224
Citations number
8
Categorie Soggetti
Mathematical Methods, Biology & Medicine","Computer Science Interdisciplinary Applications","Engineering, Biomedical","Computer Science Theory & Methods
Journal title
Computer methods and programs in biomedicine → ACNP
ISSN journal
01692607
Volume
46
Issue
3
Year of publication
1995
Pages
217 - 224
Database
ISI
SICI code
0169-2607(1995)46:3<217:AMMTEJ>2.0.ZU;2-2
Abstract
A marker-free video measurement and image processing method that provi des numerical estimation of the 2-D centre of rotation of one rigid se gment is tested. The algorithm is based on binary region moment featur es. A comparison is made between this method and a marker-based one, w here the location of the markers has been calculated in two ways. The algorithm is also extended to handle two rigid segments. The method is to be applied in human locomotion analysis in order to calculate the centre of rotation of the hip joint. It's accuracy has been tested by a comparison with in vivo radiological measurements on humans.