Efficient rendering of animated characters through optimized per-joint impostors
Rights accessRestricted access - publisher's policy
In this paper, we present a new impostor-based representation for 3D animated characters supporting real-time rendering of thousands of agents. We maximize rendering performance by using a collection of pre-computed impostors sampled from a discrete set of view directions. Our approach differs from previous work on view-dependent impostors in that we use per-joint rather than per-character impostors. Our characters are animated by applying the joint rotations directly to the impostors, instead of choosing a single impostor for the whole character from a set of pre-deﬁned poses. This offers more ﬂexibility in terms of animation clips, as our representation supports any arbitrary pose, and thus, the agent behavior is not constrained to a small collection of pre-deﬁned clips. Because our impostors are intended to be valid for any pose, a key issue is to deﬁne a proper boundary for each impostor to minimize image artifacts while animating the agents. We pose this problem as a variational optimization problem and provide an efﬁcient algorithm for computing a discrete solution as a pre-process. To the best of our knowledge, this is the ﬁrst time a crowd rendering algorithm encompassing image-based performance, small graphics processing unit footprint, and animation independence is proposed.
CitationBeacco, A. [et al.]. Efficient rendering of animated characters through optimized per-joint impostors. "Computer animation and virtual worlds", Febrer 2012, vol. 23, núm. 1, p. 33-47.
Showing items related by title, author, creator and subject.
Neovanguardias y representación arquitectónica : la expresión innovadora del proyecto contemporáneo Puebla Pons, Joan (Edicions UPC, 2002)
Restricted access to the UPC academic communityDesde finales de la década de los sesenta, han ido surgiendo, en la representación de la arquitectura, planteamientos gráficos al margen de la operatividad tradicional, que han abierto interrogantes sobre sus orígenes, sus ...
Redondo Domínguez, Ernesto (2010-05-21)
Vázquez Alcocer, Pere Pau; Balsa, Marcos (2008-03)
Open AccessThere is a growing interest in simulating natural phenomena in computer graphics applications. Animating natural scenes in real time is one of the most challenging problems due to the inherent complexity of their structure, ...