How to scale a model based on body measurement?

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Pablo Delgado
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Joined: Tue Feb 11, 2020 3:39 pm

How to scale a model based on body measurement?

Post by Pablo Delgado » Wed Sep 22, 2021 11:47 am

Hello,

I am working with Opensense, I have the orientation information coming from 3 different sensors placed on the upper body of a subject (Clavicle, Humerus, and Radius). With this information I know I can compute ik, however, I would like to scale the musculoskeletal model to the dimensions of a given subject. Assuming that I have collected the subject dimensions, how can I scale the model? I know I can do it automatically if I have markers and the trc-file for the markers positions, however, in this case I do not have such information.

Regards,

Pablo Delgado

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Thomas Uchida
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Joined: Wed May 16, 2012 11:40 am

Re: How to scale a model based on body measurement?

Post by Thomas Uchida » Wed Sep 22, 2021 2:29 pm

If you have measurements of the body segments, you could use "manual scale factors" in the Scale Tool to scale a model. This is described in the "Using Manual Scale Factors" section of the "How to Use the Scale Tool" page in the documentation (https://simtk-confluence.stanford.edu:8 ... aleFactors).

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