Search

We present an up-to-date survey on physically-based smoke simulation. Physically-based method becomes predominant in smoke simulation in computer graphics community. It prevails over traditional methods for its plausible visual effect. Significant results have been carried out over past two decades. We give a latest overview of state-of-the-art of smoke simulation and also compare various techniques according to their characteristics. We discuss several issues in terms of computational efficiency, numerical stability, numerical dissipation, and runtime performance. A number of open challenging problems are also addressed for further exploration. [ABSTRACT FROM AUTHOR]

Physically based fluid simulations usually require expensive computation cost for creating realistic animations. We present a technique that allows the user to create various fluid animations from an input fluid animation sequence, without the need for repeatedly performing simulations. Our system allows the user to deform the flow field in order to edit the overall fluid behavior. In order to maintain plausible physical behavior, we ensure the incompressibility to guarantee the mass conservation. We use a vector potential for representing the flow fields to realize such incompressibility-preserving deformations. Our method first computes (time-varying) vector potentials from the input velocity field sequence. Then, the user deforms the vector potential, and the system computes the deformed velocity field by taking the curl operator on the vector potential. The incompressibility is thus obtained by construction. We show various examples to demonstrate the usefulness of our method. [ABSTRACT FROM AUTHOR]

Abstract Rendering participating media is important for a number of domains, ranging from commercial applications (entertainment, virtual reality) to simulation systems (driving, flying, and space simulators) and safety analyses (driving conditions, sign visibility). This article surveys global illumination algorithms for environments including participating media. It reviews both appearance-based and physically-based media methods, including the single-scattering and the more general multiple-scattering techniques. The objective of the survey is the characterization of all these methods: identification of their base techniques, assumptions, limitations, and range of utilization. It concludes with some reflections about the suitability of the methods depending on the specific application involved, and possible future research lines. [ABSTRACT FROM AUTHOR]

Considers the Mars database visualization as an example of platform downsizing. Role of understanding human visual perception in the design of a visualization system; Derivation of the digital terrain model from the Viking orbital imagery; Suggestion of options for visualization hardware and software.