Markerless head tracking evaluation with human subjects for a dedicated brain PET scanner

The goal of this work was to evaluate a markerless head motion tracking system for a dedicated brain PET scanner. Data were collected for human subjects during a mock PET scan. Head pose was tracked with four calibrated web cameras and a magnetic motion tracking device. Results were compared to evaluate the markerless system tracking performance. The average mismatch of positions from optical tracking vs. the magnetic sensors was 1.6 mm. Markerless head tracking with video cameras is viable for a dedicated brain PET scanner.