Fig. 4
From: Learning based lower limb joint kinematic estimation using open source IMU data
(a) Average RMSE values over gaits for joint angles estimated by LSTM models and IMU-based inverse kinematics compared to OpenSim inverse kinematics of the OMC data. Error bars represent ± 1 standard deviation. Asterisks indicate statistical significance (p < 0.05). (b) Average estimated sagittal joint angles for the hip, knee, and ankle during the gait cycle, calculated using the LSTM architecture. IMU-IK is the IMU-based inverse kinematics, and GT is the ground truth from mocap-based inverse kinematics. Gaits with durations less than 70% or greater than 130% of the average gait time were excluded, resulting in 32 gaits used to generate this graph. The bands represent the standard error of the mean.
