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automatic scaling not recommended on a sitting trial

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David PAGNON 2024-10-16 11:30:34 +02:00 committed by GitHub
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@ -663,7 +663,8 @@ This can be either done fully automatically within Pose2Sim, or manually within
### Within Pose2Sim ### Within Pose2Sim
> *Scaling and inverse kinematics are performed in a fully automatic way for each trc file.*\ > *Scaling and inverse kinematics are performed in a fully automatic way for each trc file.*\
> *No need for a static trial!* > *No need for a static trial!*\
> _**Note that automatic scaling is not recommended when the participant is mostly crouching or sitting. In this case, scale manually on a standing trial**_ (see [next section](#within-opensim-gui)).
> Model scaling is done according to the mean of the segment lengths, across a subset of frames. We remove the 10% fastest frames (potential outliers), the frames where the speed is 0 (person probably out of frame), and the 40% most extreme segment values (potential outliers). > Model scaling is done according to the mean of the segment lengths, across a subset of frames. We remove the 10% fastest frames (potential outliers), the frames where the speed is 0 (person probably out of frame), and the 40% most extreme segment values (potential outliers).
@ -689,9 +690,7 @@ Once you have the scaled model and the joint angles, you are free to go further!
<br> <br>
### Within OpenSim GUI ### Within OpenSim GUI
If you are not fully satisfied with the results, you can perform scaling and inverse kinematics in a more traditional way, with (or without) a static trial. If you are not fully satisfied with the results or on sitting or crouching trials, you can perform scaling and inverse kinematics in a more traditional way, with (or without) a static trial.
**Scaling** **Scaling**
1. Choose a time range where the 3D keypoints are particularly well reconstructed, or capture a static pose, typically an A-pose... 1. Choose a time range where the 3D keypoints are particularly well reconstructed, or capture a static pose, typically an A-pose...