You can now add biomechanical analysis (forces, activations, loads) to any existing 3D pose estimator without retraining it, making markerless motion capture useful for rehabilitation, sports, and clinical applications.
This paper introduces BioModule, a lightweight transformer that converts 3D skeletal poses from any pose estimator into biomechanical quantities like joint forces and muscle activation. By aligning Human3.6M video data with biomechanical labels, the authors show how pose estimation errors propagate to biomechanical predictions across seven different pose estimators.