caa a22 4500 605541175 CHVBK 20210128100915.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s00371-014-0943-4 doi (NATIONALLICENCE)springer-10.1007/s00371-014-0943-4 Adaptive motion synthesis for virtual characters: a survey [Elektronische Daten] [Shihui Guo, Richard Southern, Jian Chang, David Greer, Jian Zhang] Character motion synthesis is the process of artificially generating natural motion for a virtual character. In film, motion synthesis can be used to generate difficult or dangerous stunts without putting performers at risk. In computer games and virtual reality, motion synthesis enriches the player or participant experience by allowing for unscripted and emergent character behavior. In each of these applications the ability to adapt to changes to environmental conditions or to the character in a smooth and natural manner, while still conforming with user-specified constraints, determines the utility of a method to animators and industry practitioners. This focus on adaptation capability distinguishes our survey from other reviews which focus on general technology developments. Three main methodologies (example-based; simulation-based and hybrid) are summarised and evaluated using compound metrics: adaptivity, naturalness and controllability. By assessing existing techniques according to this classification we are able to determine how well a method corresponds to users' expectations. We discuss optimization strategies commonly used in motion synthesis literature, and also contemporary perspectives from biology which give us a deeper insight into this problem. We also present observations and reflections from industry practitioners to reveal the operational constraints of character motion synthesis techniques. Our discussion and review presents a unique insight into the subject, and provide essential guidance when selecting appropriate methods to design an adaptive motion controller. Springer-Verlag Berlin Heidelberg, 2014 Computer animation nationallicence Character motion synthesis nationallicence Guo Shihui National Centre for Computer Animation, Bournemouth University, BH12 5BB, Bournemouth, UK aut Southern Richard National Centre for Computer Animation, Bournemouth University, BH12 5BB, Bournemouth, UK aut Chang Jian National Centre for Computer Animation, Bournemouth University, BH12 5BB, Bournemouth, UK aut Greer David National Centre for Computer Animation, Bournemouth University, BH12 5BB, Bournemouth, UK aut Zhang Jian National Centre for Computer Animation, Bournemouth University, BH12 5BB, Bournemouth, UK aut The Visual Computer Springer Berlin Heidelberg 31/5(2015-05-01), 497-512 0178-2789 31:5<497 2015 31 371 https://doi.org/10.1007/s00371-014-0943-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 review-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00371-014-0943-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Guo Shihui National Centre for Computer Animation, Bournemouth University, BH12 5BB, Bournemouth, UK aut NATIONALLICENCE 700 1- Southern Richard National Centre for Computer Animation, Bournemouth University, BH12 5BB, Bournemouth, UK aut NATIONALLICENCE 700 1- Chang Jian National Centre for Computer Animation, Bournemouth University, BH12 5BB, Bournemouth, UK aut NATIONALLICENCE 700 1- Greer David National Centre for Computer Animation, Bournemouth University, BH12 5BB, Bournemouth, UK aut NATIONALLICENCE 700 1- Zhang Jian National Centre for Computer Animation, Bournemouth University, BH12 5BB, Bournemouth, UK aut NATIONALLICENCE 773 0- The Visual Computer Springer Berlin Heidelberg 31/5(2015-05-01), 497-512 0178-2789 31:5<497 2015 31 371