Search found 4 matches

by Fangshi Zhu
Wed Oct 13, 2021 1:29 pm
Forum: OpenSim
Topic: Orientation Error from IMU IK
Replies: 1
Views: 481

Re: Orientation Error from IMU IK

Dear Cecilia, I am Fangshi Zhu, a postdoctoral research fellow from the University of Texas Health Science Center. Sorry I am not writing this post to answer your question. Instead, I am seeking your help. I am trying to use the OpenSim IMU inverse kinematics tool with a different kind of IMU sensor...
by Fangshi Zhu
Thu Oct 07, 2021 12:26 pm
Forum: OpenSim
Topic: OpenSim IMU placer | inverse kinematics tool question (heading correction and sensor to opensim rotation)
Replies: 3
Views: 769

OpenSim IMU placer | inverse kinematics tool question (heading correction and sensor to opensim rotation)

Has anyone tried the newly integrated IMU-based inverse kinematics calculation function? I am very excited about this new function and am trying to apply this method to our research project that uses a different kind of IMU sensors to track human walking and turning. I have some questions about IMU ...
by Fangshi Zhu
Thu Sep 09, 2021 8:43 pm
Forum: OpenSim
Topic: OpenSense OpenSim IMU placer | inverse kinematics tool question
Replies: 2
Views: 752

Re: OpenSense OpenSim IMU placer | inverse kinematics tool question

Thank you for your fast replying, Dr. Habib. To clarify, I used OpenSim 4.2 (not version 4.1). I tested each Alubi IMU and confirmed that all sensors work correctly and accurately (give correct quaternion/sensor orientation as I rotate the sensor around its x/y/z axis). I tried preview sensor data (...
by Fangshi Zhu
Wed Sep 08, 2021 2:48 pm
Forum: OpenSim
Topic: OpenSense OpenSim IMU placer | inverse kinematics tool question
Replies: 2
Views: 752

OpenSense OpenSim IMU placer | inverse kinematics tool question

Dear all, The newly integrated OpenSense (IMU placer and IMU inverse kinematics) tool is great. I tried it with our IMU data and was able to get some decent ik results except for one issue: when the subject turns around for 180 degrees and walks along the opposite direction of the OpenSim +X (starti...