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Ascension's $75,000 ReActor system uses active-optical technology to capture the motions of a single untethered performer and outputs the motion data in real time. The system's motion-capture area is delineated by a "cage" of bars embedded with a total of 480 electronic cameras that detect the infra-red (IR) markers worn by the performer. The performer, wearing a suit with 30 markers, is able to move freely within an area 3 meters high by 3 meters wide by 4 meters deep.
ReActor's active-optical technology is a departure for Ascension, which has traditionally developed magnetic-based systems. (The ReActor technology was recently acquired from a UK-based firm.) It is also a departure from the passive-optical mocap more commonly seen in the market in which send-and-receive roles are reversed--the performer's markers pick up signals from surrounding hardware. Active-optical technology results in cleaner data, according to the company, because the 480 cameras all but prevent occlusions. In addition, the ReActor system ...