Which statement accurately describes markerless motion capture compared to marker-based systems?

• A. Markerless requires wearable markers.
• B. Markerless does not require wearable markers, reducing setup time.
• C. Markerless has higher equipment costs.
• D. Markerless cannot be used for home-based exercises.

Answer: (B)

Markerless motion capture relies on visual data from cameras or depth sensors to estimate joint positions, so no wearable markers are needed. That absence of markers makes setup quick and straightforward, which is a big advantage for home-based exercises where you want to start moving right away without spending time placing and calibrating markers. In contrast, marker-based systems require carefully attaching reflective or active markers to specific body landmarks and performing detailed calibration to map those markers to the body’s skeleton, which adds setup time and complexity.

The idea that markerless has higher equipment costs isn’t typically correct because you don’t need the marker hardware and its calibration gear. Markerless can even be more accessible with common sensing devices, though advanced systems still need decent cameras and processing power. And it’s not true that markerless can’t be used at home; in fact, its minimal gear makes home use practical and convenient.