Experimental and model markers are too far apart after scaling
Posted: Mon Jun 04, 2018 1:55 am
I've been trying to use OpenSim for some months now and I'm struggling to get my model to scale satisfactorly. I've read and watched all the tutorial/webinar sessions but they offer very limited advice for troubleshooting issues. Several markers do not perfectly overlap once scaling is complete. In fact all model markers that are 'fixed' to bony landmarks e.g. RASIS, Knee Epicondyles, Acromions, etc. never perfectly match the experimental marker locations. I have exhausted all of my ideas on how to remedy the problem...Modelling with a poorly scaled model will yield wildly inaccurate results, so it seems like an important area to get right. Could my input data be a culprit? The model is always rotated 90 degrees when scaled, could the different coordinate systems used by Vicon and Opensim be to blame?
Many thanks
Many thanks