Weight coefficient of Inverse Kinematics tool

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Paul Chris
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Joined: Mon Jan 25, 2021 12:57 am

Weight coefficient of Inverse Kinematics tool

Post by Paul Chris » Sun Apr 11, 2021 4:18 am

Hello!

What is the relationship between the weight of mark points in the picture and the result of inverse kinematics? Or what will be affected by the weight of a given marker point? Thank you for your answer



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Windows
OpenSim 4.1
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Thomas Uchida
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Joined: Wed May 16, 2012 11:40 am

Re: Weight coefficient of Inverse Kinematics tool

Post by Thomas Uchida » Sun Apr 11, 2021 8:57 am

The Inverse Kinematics Tool solves a weighted least squares problem, as described in the documentation (https://simtk-confluence.stanford.edu/d ... tics+Works) and demonstrated in Tutorial 3 (https://simtk-confluence.stanford.edu/d ... e+Dynamics). Increasing the weight of a marker will reduce its tracking error.
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