Rendering participating media with multiple scattering is costly and often even challenging for off-line methods. In this paper we present a novel method for efficiently rendering such effects that achieves interactive speed for dynamic scenes with both homogeneous and heterogeneous media. It is based on instant radiosity, which is typically used to approximate indirect illumination between sur...

Abstract We consider the scattering of light in participating media composed sparsely and randomly distributed discrete particles. The particle size is expected to range from scale wavelength several orders magnitude greater, resulting an appearance with distinct graininess as opposed smooth continuous media. One fundamental issue physically-based synthesis such determine necessary optical prop...

This paper studies a pioneering social media venture and seeks to understand the effectiveness of promotional events in social media platforms by evaluating their impact on participating brands. We employ a promising research approach, based on the event study methodology, and use a rich database consisting of all the promotional events on Twitter by American Express Company and its participati...