Scale and IK Problem - solved :-)
Posted: Mon Nov 22, 2021 8:05 am
Hi at all,
I am working on an university-project to evolve a workflow for transfering mocap-data (optitrack) to OpenSim and afterwards to detect malpositions with AI (trained with biomechanics data). At the moment I am working with the raabe full body model and self recorded moCap-Data (with an Optitrack-MoCap-System and a Markerset with 49 Markers). I had to modify the markers of the "raabe full body model" a bit to fit to my recorded data (number, positions and names).
Now to my actual problem:
When I try to scale the model on my moCap-data or to use the IK-Tool, the model does not adopt the correct position (a standard T-pose).
Especially hip, pelvis and torso orientations are wrong, when I run IK, as you can see in the attached picture "RaabeFullBodyModelNotAdeptingT-Pose_red.png".
Own reflections on the possible cause of the problem:
My self recorded data imported in OpenSim "shows the subject looking to the back". Is that the problem? Is the model not able to adopt a position looking to the back?
(Using the coordinates-settings I realized that the pelivs-rotation can only be set +-90 degree. For for my collected data I think I would need a pelivs-rotation of +-180 degree.)
Thank you very much for any help.
Regards
Lisa Jonas
PS:
I also tried to attach the modified model, but I can't because its size is to big.
In the hope that it could also be helpful, I have attached a file with the recorded data of the T-Pose (a trc file change to txt, because this forum doesen't accept the upload of trc) and the IK-Results-file.
I am working on an university-project to evolve a workflow for transfering mocap-data (optitrack) to OpenSim and afterwards to detect malpositions with AI (trained with biomechanics data). At the moment I am working with the raabe full body model and self recorded moCap-Data (with an Optitrack-MoCap-System and a Markerset with 49 Markers). I had to modify the markers of the "raabe full body model" a bit to fit to my recorded data (number, positions and names).
Now to my actual problem:
When I try to scale the model on my moCap-data or to use the IK-Tool, the model does not adopt the correct position (a standard T-pose).
Especially hip, pelvis and torso orientations are wrong, when I run IK, as you can see in the attached picture "RaabeFullBodyModelNotAdeptingT-Pose_red.png".
Own reflections on the possible cause of the problem:
My self recorded data imported in OpenSim "shows the subject looking to the back". Is that the problem? Is the model not able to adopt a position looking to the back?
(Using the coordinates-settings I realized that the pelivs-rotation can only be set +-90 degree. For for my collected data I think I would need a pelivs-rotation of +-180 degree.)
Thank you very much for any help.
Regards
Lisa Jonas
PS:
I also tried to attach the modified model, but I can't because its size is to big.
In the hope that it could also be helpful, I have attached a file with the recorded data of the T-Pose (a trc file change to txt, because this forum doesen't accept the upload of trc) and the IK-Results-file.