From: Technically Sweet Subject: EDUC: UCSC CE/CIS Research Seminar 1/20/94 Another seminar you can't go to, but at least there's a paper this time: UC Santa Cruz: Computer & Information Sciences, and Computer Engineering RESEARCH SEMINAR: Thursday, January 20, 1994, 10:30 - 11:30 AM Room 330, Applied Sciences Building Thomas Ngo, from Inverval Research Corporation, Palo Alto, California will speak on: Spacetime Constraints Revisited... Again! Abstract: We extend previous work on automatic motion synthesis for physically realistic 2D articulated figures. We do so in three ways. First, we describe an improved motion-synthesis algorithm that runs substantially faster than previously reported algorithms. Second, we present two new techniques for influencing the style of the motions generated by the algorithm. These techniques can be used by an animator to achieve a desired movement style, or they can be used to guarantee variety in the motions synthesized over several runs of the algorithm. Finally, we describe an animation editor that supports the interactive concatenation of existing, automatically generated motion controllers to produce complex, composite trajectories. Taken together, these results suggest how a usable, useful system of articulated-figure motion synthesis might be developed. In addition, we extend the technique to include automatic motion synthesis for 3D articulated figures and 3D mass-spring systems. I will begin the seminar with a repeat of my talk at SIGGRAPH '93, "Spacetime Constraints Revisited," in which the original work with 2D articulated figures was described. Joint work with Jon Christensen, Alex Fukunaga, Lloyd Hsu, Joe Marks, Hadi Partovi, Peter Reiss, and Andrew Shuman. Anyone needing special arrangements to accommodate a disability is encouraged to call Gerri McLellan at the Baskin Center (408) 459-3695.