OpenSense- sensor to earth angle (trunk flexion angle)
Posted: Mon Mar 21, 2022 8:04 am
I am looking to find trunk flexion angle with OpenSense during sit-to-stand trials. The model runs great and simulation looks correct. However, I would like to find the angle of the torso to the earth (OpenSim coordinate system) and do not see it in the motion output from OpenSim. The only outputs seem to be relating one sensor to another (closest relevant outputs are torso to pelvis- lumbar bending OR pelvis to femur- hip flexion). Is there a way to get the angle of one sensor to the earth, particularly AP trunk flexion about the east/Z axis? I may have missed it on the output or it may be something I can find with pre or post processing of the quaternions.
Thanks in advance!
Thanks in advance!