- The document discusses optical motion capture, which uses cameras to capture markers placed on joints to analyze motion by reconstructing a skeletal model and estimating joint angles and forces over time.
- It questions how the 2D camera images are reconstructed into 3D space, how actual lengths are determined when cameras only see sensor lengths, and how joint torques and muscles forces are estimated using only cameras and force plates.
- Matrices play a large role in the calculations needed to address these questions in optical motion capture.