Abstract
This paper presents a detailed description of the process of motion capture, whereby sensor information from a performer is transformed into an articulated, hierarchical rigid-body object. We describe the gathering of the data, the real-time construction of a virtual skeleton which a director can use for immediate feedback, and the offline processing which produces the articulated object. This offline process involves a robust statistical estimation of the size of the skeleton and an inverse kinematic optimization to produce the desired joint angle trajectories. Additionally, we discuss a variation on the inverse kinematic optimization which can be used when the standard approach does not yield satisfactory results for the special cases when joint angle consistency is desired between a group of motions. These procedures work well and have been used to produce motions for a number of commercial games.
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Bodenheimer, B., Rose, C., Rosenthal, S., Pella, J. (1997). The Process of Motion Capture: Dealing with the Data. In: Thalmann, D., van de Panne, M. (eds) Computer Animation and Simulation ’97. Eurographics. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6874-5_1
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DOI: https://doi.org/10.1007/978-3-7091-6874-5_1
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