Scale problem

Provide easy-to-use, extensible software for modeling, simulating, controlling, and analyzing the neuromusculoskeletal system.
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nafiseh nosouhi
Posts: 1
Joined: Tue Feb 11, 2020 4:43 am

Scale problem

Post by nafiseh nosouhi » Tue Nov 16, 2021 12:48 am

Hi at all,

In my study, participants walked in special shoes with thick soles in laboratory. When scaling in OpenSim, I give higher weight to knee, ankle and pelvic markers. the result is bad and experimental and virtual markers are too far apart finally.
How can I improve my scaling?

https://imagizer.imageshack.com/img924/7539/2Qe41o.png
https://imagizer.imageshack.com/img923/3332/IkOQPF.png

Thanks for any help,
Nafise

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Ayman Habib
Posts: 2252
Joined: Fri Apr 01, 2005 12:24 pm

Re: Scale problem

Post by Ayman Habib » Thu Nov 18, 2021 12:06 pm

Hello,
Please make sure the model can translate forward before doing scaling since otherwise the model can't match anatomical markers and the scaling results will be bad. Also keep in mind that visualization of markers is informative to assess scaling, but bones are just decorations and are not used.

Hope this helps,
-Ayman

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