>How about calling the motion capture for animation "motion capture" and >referring to the second form as "motion trigger." The second form of >technology is more about triggering a pre-scripted event, whether that be a >sound, light, or video projection, while the first is about "capturing" or >documenting precise movements made by the entire body through time. The term "Motion Tracking" is often used to describe video based motion "sensing" and in an environment where there is mutual influence (interactivity) between movement and other media. The object (presence of the dancer) is "tracked" in space and time and influences the events. The word "triggering" implies a control paradigm which is more limiting and in my experience, less useful than a paradigm of tracking or mutual influence. Trigger means "this" causes "that" and is a one-to-one mapping between a movement and an event. Triggering implies a single thing is happening...turing on and off...a binary condition. Whereas mutual influence implies more room for nuance and other forms of interactivty rather than straight forward trigggering. Motion tracking can be used for interactivity, that is tracking the attributes of the motion in the video. Motion capture is a sub-set of motion tracking, that is, tracking markers of a moving object or person. It is a very specific method. Motion capture is a form of motion tracking that is speciialized for the needs of 3D animation. Video based motion capture uses video motion tracking technology to make itslef happen. Magnetic motion capture uses magnetic motion tracking technology. Best, Lisa ===================================== Dr. Lisa Naugle Assistant Professor Dance and Technology University of California, Irvine School of the Arts, Department of Dance MAB 300 Irvine, California 92697-2775 email: lnaugle@uci.edu tel: (949) 824-3209 fax: (949) 824-4563 http://www.arts.uci.edu/lnaugle/
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