Physical motion analysis system in driving using image processing

This paper proposes an optical motion capture system for physical motion analysis in driving. Markers for motion capture consist of two high intensity LEDs, one for position measurement and the other for pilot signal. The pilot marker flashes synchronized with the periodic pulse, which is generated by multiplying the UTC second (1PPS) obtained by the GPS. Video cameras are also triggered with the pulse and thus the proposed system can distinguish the marker every one second in the automobile in the daytime. This copes with problems in optical motion capture system, occlusions and swappings.